Audio 50 Operator’s Manual
Mercedes-Benz
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Contents
CD Mode . . . . . . . . . . . . . . . . . . . . . . . 39
General information . . . . . . . . . . . 39
Opening CD changer*. . . . . . . . . . . 40
Retracting CD changer* . . . . . . . . . 40
Loading CDs . . . . . . . . . . . . . . . . . . 40
Ejecting CDs . . . . . . . . . . . . . . . . . 43
CD main menu . . . . . . . . . . . . . . . . 45
Selecting CDs . . . . . . . . . . . . . . . . 46
Selecting track . . . . . . . . . . . . . . . . 47
Introduction . . . . . . . . . . . . . . . . . . . . . 3 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Concept of this manual . . . . . . . . . . . . . 3 Audio main menu . . . . . . . . . . . . . . . . . 26
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating safety. . . . . . . . . . . . . . . . . . . 5
Calling up Audio main menu. . . . . . 26
Mute function . . . . . . . . . . . . . . . . 26
Radio mode . . . . . . . . . . . . . . . . . . . . . 27
FM or AM main menu . . . . . . . . . . . 27
Switching wavebands . . . . . . . . . . . 27
Storing stations . . . . . . . . . . . . . . 31
Weather band . . . . . . . . . . . . . . . . . 32
Changing weather band stations . . 33
Cassette Mode. . . . . . . . . . . . . . . . . . . 34
Opening cassette cover . . . . . . . . . 34
Closing cassette cover . . . . . . . . . . 34
At a glance . . . . . . . . . . . . . . . . . . . . . . 7
Radio operating elements . . . . . . . . . . . 8
CD operating elements . . . . . . . . . . . . 12
Telephone operating elements. . . . . . . 14
Multifunction steering wheel . . . . . . . . 16
fast reverse. . . . . . . . . . . . . . . . . . . 49
Playback options. . . . . . . . . . . . . . . 50
Explanation of playback options. . . 50
Multifunction steering wheel . . . . . . . . 52
Introduction . . . . . . . . . . . . . . . . . . . . 17
Menu system . . . . . . . . . . . . . . . . . . . . 18
Menu functions and submenus . . . 19
Quitting submenus . . . . . . . . . . . . . 19
General operation . . . . . . . . . . . . . . . . 20
Switching on/off . . . . . . . . . . . . . . 20
Volume . . . . . . . . . . . . . . . . . . . . . 20
Automatic volume control . . . . . . . 21
Balance and Fader . . . . . . . . . . . . 21
Bass and Treble . . . . . . . . . . . . . . . 22
Additional sound functions*. . . . . . 22
Inserting cassette. . . . . . . . . . . . . 34 Telephone* . . . . . . . . . . . . . . . . . . . . . 53
Ejecting cassette . . . . . . . . . . . . . . 35 Safety instructions . . . . . . . . . . . . . . . . 54
Tape main menu . . . . . . . . . . . . . . 35 General information . . . . . . . . . . . . . . . 55
Switching cassette side . . . . . . . . 35 Operation . . . . . . . . . . . . . . . . . . . . . . . 57
Selecting track . . . . . . . . . . . . . . . . 36
Fast forward/rewind. . . . . . . . . . . . 37
Skip blank. . . . . . . . . . . . . . . . . . . . 37
Dolby B NR Noise Reduction . . . . . 38
Switching on telephone . . . . . . . . . 57
Switching off telephone . . . . . . . . 57
“911” emergency calls . . . . . . . . . . 58
Unlock code entry. . . . . . . . . . . . . . 59
Switching to telephone mode . . . . 59
Missed or unanswered calls . . . . . . 60
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Contents
Telephone main menu . . . . . . . . . 60
Quitting the SMS menu. . . . . . . . . . 72
Incoming call. . . . . . . . . . . . . . . . . . 61 Multifunction steering wheel . . . . . . . . 73
Accepting call . . . . . . . . . . . . . . . . . 62
Terminating call . . . . . . . . . . . . . . . 62
Service. . . . . . . . . . . . . . . . . . . . . . . . . 75
System menu . . . . . . . . . . . . . . . . . . . . 76
Calling up the System menu . . . . . . 76
Setting the time . . . . . . . . . . . . . . 76
Changing the display design . . . . . . 77
Brightness setting. . . . . . . . . . . . . . 77
Linguatronic* help text . . . . . . . . . . 77
Setting the language. . . . . . . . . . . 78
Outgoing call. . . . . . . . . . . . . . . . . . 62
Entering phone number directly . . . 62
Redial function . . . . . . . . . . . . . . . . 63
Selecting entry from the
Recvd # list . . . . . . . . . . . . . . . . . . 63
Selecting entry from the
Dialed # list . . . . . . . . . . . . . . . . . . 64
Speed dial. . . . . . . . . . . . . . . . . . . . 65
Starting call. . . . . . . . . . . . . . . . . . . 66
Terminating call . . . . . . . . . . . . . . . 66
Active call . . . . . . . . . . . . . . . . . . . . 66
Telephone book . . . . . . . . . . . . . . . 68
Calling up the telephone book . . . . 68
Selecting telephone book entry . . . 69
Voice tag. . . . . . . . . . . . . . . . . . . . . 70
SMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
SMS menu . . . . . . . . . . . . . . . . . . . 71
Switching between Sender
Technical terminology . . . . . . . . . . . . 79
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 81
and Subject. . . . . . . . . . . . . . . . . . . 71
Selecting message . . . . . . . . . . . . . 71
Reading message . . . . . . . . . . . . . . 71
Deleting message . . . . . . . . . . . . . . 72
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Introduction
Concept of this manual
Concept of this manual
This operating manual was designed to
help you to use your car radio in all situa-
tions. In order to make finding the informa-
tion easier, each chapter has its own
colour code.
Audio
Service
Here, you will find all you need to know to Here, you will find all necessary informa-
be able to operate the audio system (radio, tion to use the service functions.
cassette and CD mode).
Indexes
At a glance
Telephone*
The glossary explains the most important
technical terms.
This will give you an overview of all operat-
ing elements
Here, you will find all necessary informa-
tion for operation of the telephone.
Content and keyword indexes are intended
to help you find information quickly.
Introduction
Here, you will find a description of the
menu system and the general operating
functions
(e.g. switching on/off, volume and sound
settings).
3
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Introduction
Symbols
Symbols
The following symbols are used in this
operating manual:
̈ This symbol indicates that you should
perform an action.
Warnings
G
*
This star indicates special equipment
for all models. Not all the models have
the same special equipment and there-
fore the equipment of your model may
differ from some descriptions and illus-
trations.
̈ Several of these symbols indicate a se-
A warning points out possible hazards for
your safety, your health or your life.
ries of actions.
୴୴
This continuation symbol signifies
that a series of actions was inter-
rupted and will be continued on the
next page.
i
A tip gives you advice or additional in-
formation.
4
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Introduction
Operating safety
Operating safety
iFaults
iServicing
Always have all servicing carried out by
a qualified specialist workshop.
Accident hazard
G
The Audio 50, the CD-changer*, the
telephone*, the LINGUATRONIC* and
the Sound-system* are interconnect-
ed. Thus, the failure or incorrect remov-
al of one of the components can also
interfere with the function of the
others.
In order to avoid distraction which could
lead to an accident, system settings should
be entered with the vehicle at a standstill
and the system should be operated by the
driver only when traffic conditions permit.
DaimlerChrysler recommends your
Mercedes-Benz Service center, as this
has the necessary expertise and tools
for any necessary operations.
In particular for operations critical to
safety and operations on systems criti-
cal to safety, servicing by a qualified
specialist workshop is essential.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is cover-
ing a distance of 50 feet (approximately
14 m) every second.
For this reason, work on the compo-
nents should be performed by a spe-
cialist workshop.
5
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6
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At a glance
Radio operating elements
Function
Page
Function
rcd
Selection functions
Function
and X
Station search
Manual tuning
Page
1
Soft keys
3
8
2 !- 0
Manual frequency entry
28
30
30
22
26
4 pConfirmation
31
31
29
5 GMute function
6 KSwitching on/off
26
20
20
Storing stations
9 bBalance and Fader
10 kBass and Treble
11 aAudio main menu
Calling up preset memory
7
Volume adjustment
9
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At a glance
Cassette operating elements
Function
Page
Function
7 G
Function
Page
1
2
3
Soft keys
11
Mute function
26
20
20
Closing cassette panel
34
Backward track search
Rewind
36
37
21
22
26
8 KSwitching on/off
rcd
Selection function
9
Volume adjustment
10 X
Forward track search
Fast forward
12 bBalance and Fader
13 kBass and Treble
14 aAudio main menu
4 pConfirmation
5
6
Cassette cover
Opening cassette cover
and ejecting cassette
36
37
34
11
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At a glance
CD operating elements
Function
Page
Function
Function
11 X
Forward track skip
Page
1 E CD ejection
43
6 pConfirmation
7 G Mute function
8 KSwitching on/off
2
3
Soft keys
CD slot
26
20
20
48
49
21
22
26
40
48
48
Forward
4 !- 0
Track number entry
9
Volume adjustment
12 bBalance and Fader
13 kBass and Treble
14 aAudio main menu
10
!- 6 and 0
Selecting CD
Backward track skip
Reverse
48
49
5
rcd
Selection functions
13
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At a glance
Telephone operating elements
Function
Page
Function
5 J
Function
Page
21
1
Function buttons
9 bBalance and Fader
10 kBass and Treble
11 t
2 !- 0
Unlock code entry
22
Accepting call
Starting call
62
66
63
67
20
20
59
62
65
Telephone main menu
Switching on telephone
Switching off telephone
60
57
57
Phone number entry
Speed dial
Redial function
6 ITerminating call
7 KSwitching on/off
3
rcd
Selection function
8
Volume adjustment
4 pConfirmation
15
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At a glance
Multifunction steering wheel
Multifunction steering wheel
Function
Page
Function
Page
3
Making calls:
5
Radio mode:
í
j next station
k previous station
Accepting call
Starting call
Redial function
62
66
63
Telephone mode:
ì
Terminating call
j next list entry
k previous list entry
67
4
5
Changing menu in multi-
function display:
è forwards
Function
Page
ÿ backwards
CD and cassette mode:
j next track
1
2
Multifunction display
Adjusting volume
ç Quieter
æ Louder
20
20
k previous track
Settings menu
16
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Introduction
Menu system
Menu system
The Audio 50 is easy to use thanks to its
menu system.
Each of the main functions, i.e. audio
(radio, CD and cassette mode), telephone*
and service, has its own main menu.
Menu display
The settings can be changed by operating
accordingly.
A display may have 3 areas.
Example: Single CD menu
The status line 3 is divided into three
areas.
Left side:
Main menus
The selected operating mode is given. In
this example: CD.
̈ Audio:
Press the abutton (୴ Page 26).
Center:
̈ Telephone:
A status display for the selected operating
mode is given. In this example, the playing
time of the track.
1 Soft keys
2 Main area
3 Status line
Press the tbutton (୴ Page 60).
̈ Service:
Press the sbutton (୴ Page 76).
Right side:
The functions currently assigned to the
function buttons are displayed in the
button area 1.
There may be a maximum of 3 soft keys on
both the left and the right side directly next
to the display.
General status information is displayed,
regardless of the selected operating mode.
In this example: The strength of reception
for the telephone*.
The main area 2 displays messages or set-
tings.
18
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Introduction
Menu system
Menu functions and submenus
Example: The soft keys OKand Delete
In the menus, it is possible to switch func-
tions on and off and open other submenus
using the soft keys.
Example: FM main menu:
Quitting submenus
You can quit submenus using the Return
soft key. The display switches to the next
highest menu level.
The system does not adopt modified set-
tings that have not been stored.
There are exceptions when pressing the
Returnsoft key will also store new set-
tings. These exceptions are described in
detail.
ț
ț
The Scansoft key switches the scan
search on or off.
The Memorysoft key opens the Mem-
ory submenu.
In some situations, soft keys may not have
any function. In such cases, they have a
different appearance from the others.
19
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Introduction
General operation
General operation
̈ Press the K button.
Volume
i
In both cases, the system defaults to
The volume settings for the audio sources
The system can be operated as follows:
the mode last used before the unit was and the telephone* can be set indepen-
ț
ț
from the Audio 50 itself
switched off. The operating mode’s
main menu is displayed.
dently. The system automatically stores
each setting.
from the multifunction steering
wheel
A single setting is stored for the radio, cas-
sette and CD audio sources. The system
automatically stores the setting.
i
In this operating manual, operation
from the Audio 50 and from the multi-
function steering wheel is described.
Unless otherwise specified, the de-
scriptions and the displays illustrated
relate to the Audio 50.
Without the key in position 1 or 2 of the
steering lock, the system automatically
switches off again after about 30 min-
utes.
Adjusting the volume
̈ On the Audio 50 turn the rotary
control O.
Switching off
or
Switching on/off
̈ Turn the key in the steering lock to po-
sition 0 and remove it.
̈ On the multifunction steering wheel,
Switching on
press æ or ç.
or
̈ Turn the key in the steering lock to po-
You will adjust the volume to be louder
or quieter, according to the direction of
rotation or the button that is pressed.
̈ Press the K button.
sition 1 or 2.
or
20
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Introduction
General operation
The system automatically stores the
volume settings on switching off.
After switching on again, the volume
may be quieter than when switched off.
Balance and Fader
The horizontal bar indicates the fader
setting.
A single setting is stored for the balance
and the fader for radio, cassette and CD
mode. The system automatically stores
each setting.
̈ Press
or r.
This will change the balance setting.
It is quieter if:
or
ț
the system was switched off for more
than 15 minutes
The balance and the fader setting for tele-
phone mode are independent of all other
operating modes. The system automatical-
ly stores each setting.
̈ Press cor d.
This will change the fader setting.
̈ Press the Resetsoft key if desired.
ț
or if the volume was set to a value out-
side a certain range when switching off
Adjusting balance and fader:
̈ Press b.
This will reset the balance and the fad-
er to the center setting.
Automatic volume control
The automatic volume control adjusts the
volume depending on
̈ Press por the Returnsoft key.
The Balance/Fader menu is displayed.
or
ț
the vehicle speed (only in vehicles with-
out Sound-system*)
̈ Wait until the Volume menu disap-
pears.
ț
or noises inside the vehicle (only in ve-
hicles with Sound-system*)
The new setting is stored.
The vertical bar indicates the balance
setting.
21
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Introduction
General operation
Bass and Treble
̈ Press the Resetsoft key if desired.
Selecting and activating function:
Different bass and treble settings are pos-
sible for all operating modes. The system
automatically stores each setting.
This will reset the bass and the treble
setting to the center setting.
An additional sound function can be acti-
vated by selecting it in the Sound menu.
̈ Press p.
̈ Press k.
or
The Tone menu is displayed.
Adjusting bass and treble:
̈ Press k.
̈ Wait until the Tone menu disappears.
The new setting is stored.
The Tone menu is displayed.
Additional sound functions*
The following functions are available:
ț Stereo(୴ Page 23)
̈ Press the Optionssoft key.
The Sound menu is displayed.
ț Drivercentered (୴ Page 23)
ț Speech(୴ Page 23)
̈ By pressing cor dselect either the
Bassor the Treblefunction.
ț Logic7(୴ Page 23)
̈ Press
or r.
This will change the bass or treble set-
ting.
22
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Introduction
General operation
̈ By pressing cor dselect the de-
Explanation of the additional sound
functions
i
sired function.
Logic 7 sound provides better spatial
sound quality than with conventional
stereo sound. Logic 7 sound functions
with all conventional stereo audio
sources (e.g. stereo cassette, stereo
CD and stereo radio stations).
or
ț Stereo:
Conventional stereo sound.
̈ Press the Resetsoft key.
ț Driver-centered:
Stereo sound, optimized for the driver’s
seat.
This will activate the Logic7function
(factory setting).
̈ Press p.
If reception is poor, Logic 7 should be
switched off because this may consid-
erably impair the signal.
ț Speech:
The selected setting is stored. A corre-
sponding message is given in the sta-
tus line.
Stereo sound, optimized for under-
standing speech.
ț Logic 7:
Ambient sound.
23
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24
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Audio
Audio main menu
Audio main menu
In the Audio main menu you can switch be- Changing audio source
Mute function
tween the following audio sources:
Example: Switching to FM waveband
Switching on mute function
ț
ț
ț
Radio (FM, AM, WB wavebands)
̈ Call up the Audio main menu
̈ On the Audio 50, press G.
Cassette (tape)
CD
(୴ Page 26).
The system is muted. Telephone calls
can still be heard.
In CD and cassette mode, the CD or the
cassette stops.
̈ For radio mode in the FM waveband,
press the FMsoft key.
In addition, you can also switch the mute
function on or off.
The FM main menu with the last select-
ed station is displayed.
Calling up Audio main menu
̈ On the Audio 50, press a.
The Audio main menu is displayed.
Switching off mute function
̈ On the Audio 50, press Gagain.
or
̈ Turn the volume rotary control.
The audio source selected before mute
function activation is heard.
26
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Audio
Radio mode
Radio mode
Switching to radio mode
FM main menu:
Selecting stations
You have the following options:
̈ Call up the FM, AM or WB main menu
(୴ Page 27).
ț
ț
ț
ț
ț
ț
ț
Selecting using frequency list
(୴ Page 28)
The system automatically switches to
radio mode.
Selecting using station search
(୴ Page 28).
FM or AM main menu
Selecting using station presets
(୴ Page 29).
AM main menu:
̈ Call up the Audio main menu
(୴ Page 26).
Selecting using Autostore presets
(୴ Page 29).
̈ Press the AMor FMsoft key.
The FM main menu with the last select-
ed station is displayed.
Selecting using the scan search
(୴ Page 30).
or
Selecting using manual tuning
(୴ Page 30).
Switching wavebands
The AM main menu with the last select-
ed station is displayed.
̈ Call up the FM or the AM main menu
Selecting using manual frequency en-
try (୴ Page 31).
(୴ Page 27).
The system switches to the FM or AM
waveband.
27
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Audio
Radio mode
Selecting using frequency list
Selecting using station search
i
Frequency increments in the frequency
list:
i
i
The frequency list is available in the FM
and AM waveband.
The station search is available in the
FM, AM and WB wavebands.
cor dbutton:
200 kHz for FM
10 kHz for AM
The frequency list contains all the recep-
tion frequencies of the respective wave-
band, regardless of the stations that
currently can be received.
̈ Switch on the desired waveband FMor
AM(୴ Page 27) or Weather Band
(୴ Page 32).
ror
button:
̈ On the Audio 50, press Xor
600 kHz for FM
30 kHz for AM
Only one list entry can be seen at a time,
showing the currently selected frequency
Y.
The search proceeds upwards or down-
wards and stops at the next receivable
station.
̈ Switch on the desired waveband FMor
AM(୴ Page 27).
̈ By pressing
,
,
or rselect
or
a frequency from the list.
̈ Switch the multifunction display in the
instrument cluster to the Audio screen
(୴ Page 52).
The system tunes to the selected fre-
quency.
28
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Audio
Radio mode
̈ On the multifunction steering wheel,
Access via the Memory menu:
Selecting using Autostore presets
press j or k.
̈ Switch on the desired waveband
The FM and the AM waveband each have
ten available Autostore presets.
The search proceeds upward or down-
ward and stops at the next receivable
station.
(୴ Page 27).
The presets are assigned stations in the or-
der of their reception quality (୴ Page 32).
The station with the best reception quality
is stored at preset 1.
Selecting using station presets
The FM and the AM waveband each have
ten available presets.
You can access the presets using the num-
ber buttons or via the Memory menu.
̈ Switch on the desired waveband
(୴ Page 27).
̈ Press the Memorysoft key.
The Station list menu is displayed.
Access using number buttons:
̈ Switch on the desired waveband
(୴ Page 27).
̈ Press the Autost.soft key.
̈ Press one of the buttons !- 0.
୴୴
The Autostore menu is displayed.
The system tunes to the preset station.
̈ By pressing c, d,
or rselect
a preset.
̈ Press p.
The system tunes to the preset station.
After a short time, the main menu of
the respective waveband is displayed.
29
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Audio
Radio mode
The scan search automatically stops at the
station listened to before the scan search
was started.
̈ Switch on the desired waveband
(୴ Page 27).
̈ By pressing c, d,
or rselect
̈ Press Xfor forward or Yfor
backward. Press and hold the button
for at least 2 seconds.
a preset.
̈ Press p.
The system tunes to the preset station.
After a short time, the main menu of
the respective waveband is displayed.
Manual tuning is activated.
̈ Keep holding the button, or release it
and keep tapping it in quick succes-
sion.
̈ Press the Scansoft key.
The scan starts.
Selecting using the scan search
̈ Press the Scansoft key again.
The scan stops.
Every press of the button causes the
frequency to change incrementally un-
til the button is released.
The scan search is available in the FM and
AM waveband.
The scan search plays each receivable sta-
tion for approx. 8 seconds.
Selecting using manual tuning
Manual tuning is deactivated if the but-
ton is not pressed for approx. 3 sec-
onds.
Manual tuning is available in the FM and
AM wavebands.
During the first search, stations with ex-
tremely good reception are played. During
the second search, stations with weaker
reception are also played.
̈ Switch on the desired waveband
(୴ Page 27).
30
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Audio
Radio mode
̈ Press Q.
Storing stations
i
The frequency entry screen is dis-
played. This gives the frequency range
of the FM waveband.
The FM and the AM waveband each have
ten available presets.
Frequency increments for manual tun-
ing:
You have the following options:
FM:
AM:
200 kHz
10 kHz
ț
ț
Manual storing (୴ Page 31)
Storing using Autostore (୴ Page 32)
Selecting using manual frequency entry
Manual frequency entry is available in the
FM and AM wavebands.
Manual storing
Manuel storing using number buttons:
̈ In sequence press the number
Entry example: 97.9 MHz in the FM wave-
band:
buttons 9, 7and 9.
̈ Tune to the station to be stored
(୴ Page 27).
Each number entered is displayed on
the screen.
̈ Switch on the FM waveband
̈ Press one of the buttons !- 0for
(୴ Page 27).
more than 2 seconds.
̈ Press p.
A signal tone can be heard and the sta-
tion is stored at the corresponding pre-
set.
The system tunes to the frequency. Af-
ter a short time, the FM main menu is
displayed.
୴୴
i
It is not possible to make entries out-
side the frequency range.
31
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Audio
Radio mode
Manuel storing using Memory menu:
Storing using Autostore
̈ Tune to the station to be stored
The FM and the AM waveband each have
ten available Autostore presets.
(୴ Page 27).
̈ Press the Memorysoft key.
The memory function assigns stations to
the presets in the order of their reception
quality.
The Memory menu is displayed.
̈ Press the Searchsoft key.
The system stores the station with the best
reception quality at preset 1.
The Autostore search starts.
After a while, the new preset assign-
ment is displayed.
The system tunes to the station stored
at preset 1. After a short time, the
Waveband main menu is displayed
again.
̈ Switch on the desired waveband
(୴ Page 27).
̈ By pressing c, d,
or rselect
a preset.
̈ Press pfor more than 2 seconds.
Weather band
The system stores the station. After a
short time, the main menu of the re-
spective waveband is displayed.
You will be able to receive up to 7 weather
band stations.
̈ Press the Autost.soft key.
The Autostore memory is displayed.
̈ Call up the Audio main menu
(୴ Page 26).
32
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Audio
Radio mode
Calling up stations using station search:
Calling up stations manually
̈ On the Audio 50, press Yor
̈ On the Audio 50, press cor d.
X.
The next weather band station is called
up.
The weather band station with the next
best reception is found and called up.
i
̈ Press the WBsoft key.
Depending on the vehicle’s position, it
will not be possible to receive all the
stations.
Calling up stations using the number but-
tons:
The weather band station with the best
reception is called up.
̈ On the Audio 50, press one of the but-
Changing weather band stations
tons !to 7.
The selected weather band station is
called up.
i
Depending on the vehicle’s position, it
will not be possible to receive all the
stations.
You have the following options for calling
up another weather band station:
ț
ț
Calling up stations using station search
Calling up stations using the number
buttons
ț
Calling up stations manually
33
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Audio
Cassette Mode
Cassette Mode
Switching to cassette mode
Inserting cassette
Accident hazard
i
̈ Open the cassette cover (୴ Page 34)
If the cassette cover remains open for
more than 30 seconds, a signal tone
briefly sounds.
When the cassette cover is open,
you cannot eject the CD changer*
(୴ Page 40) or open the storage com-
partment in the center console.
and insert a cassette (୴ Page 34).
G
or
Only insert a cassette into the Audio 50
when the vehicle is at a standstill. If attempt-
ed during driving, the distraction from the
traffic situation leads to increased danger of
accidents.
̈ Call up the Tape main menu
(୴ Page 35).
Opening cassette cover
Closing cassette cover
The cassette cover (୴ Page 11) must be
open in order to insert a cassette. After in-
serting a cassette, you should close the
cover again.
i
̈ Push down at the mark on the cassette
cover (୴ Page 11) until it latches in.
We recommend that you do not use
cassettes with a playing time of
120 minutes (120).
̈ Press
.
The cassette cover opens.
̈ Open the cassette cover (୴ Page 34).
If a cassette has already been inserted,
the Audio 50 ejects it.
̈ Push the cassette into the cassette slot
until it engages, then press it lightly.
The Audio 50 will pull the cassette into
place and begins to play side 1. The
Tape main menu is displayed.
34
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Audio
Cassette Mode
Tape main menu
Switching cassette side
̈ Call up the Audio main menu
You can switch the side of the cassette at
any point during playback.
(୴ Page 26).
The side switches automatically at the end
of the tape.
Side 1 is defined as the cassette side
that is facing upwards.
̈ Call up the Tape main menu
(୴ Page 35).
̈ Close the cassette cover (୴ Page 34).
̈ Press c.
̈ Press the Tapesoft key.
This will switch the tape from side 1 to
side 2.
Ejecting cassette
If a cassette is inserted, the Tape main
menu is displayed and the Audio 50
switches to cassette mode.
̈ Press
.
or
The cassette cover opens and the
Audio 50 ejects the cassette.
̈ Press d.
This will switch the tape from side 2 to
side 1.
̈ Remove the cassette from the slot.
̈ Close the cassette cover (୴ Page 34).
Switching cassette side from the multi-
function steering wheel:
If there is no cassette inserted, a corre-
sponding message is briefly displayed.
̈ Switch the multifunction display in
the instrument cluster to the Audio
screen.
୴୴
35
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Audio
Cassette Mode
̈ Press j.
Selecting using track search
Canceling search:
This will switch the tape from side 1 to Starting search:
side 2.
̈ On the Audio 50, press one of the
buttons X, r, Yor
.
̈ Call up the Tape main menu
or
(୴ Page 35).
̈ Press Xor r.
The forward scan starts.
or
The Audio 50 switches to cassette
playback.
̈ Press k.
This will switch the tape from side 2 to
side 1.
Selecting using scan search
The scan search starts playing a track for
approx. 8 seconds and then fast forwards
to the beginning of the next track.
̈ Press Yor
.
Selecting track
The backward scan starts.
You have the following options:
̈ Call up the Tape main menu
ț
Selecting using track search
(୴ Page 36)
i
(୴ Page 35).
Forward search:
The Audio 50 fast forwards the cas-
sette to the beginning of the next track
and then switches to cassette play-
back.
ț
Selecting using scan search
(୴ Page 36)
i
There must be a gap between tracks of
at least 4 seconds.
Otherwise the track search and scan
search will not function.
Backward search:
̈ Press the Scansoft key.
The Audio 50 rewinds the cassette to
the beginning of the track currently
playing and then switches to cassette
playback.
The scan starts.
36
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Audio
Cassette Mode
̈ Press the Scansoft key again.
Interrupting fast forward/rewind:
Switching skip blank on/off:
The scan stops.
̈ Press one of the buttons Xor
̈ Call up the Tape main menu
.
(୴ Page 35).
Fast forward/rewind
The Audio 50 switches to cassette
playback.
̈ Call up the Tape main menu
(୴ Page 35).
Skip blank
̈ Press X for more than 2 seconds.
With skip blank switched on, the Audio 50
skips blank sections of the cassette which
are longer than approx. 10 seconds.
The cassette winds forward.
or
̈ Press the Settingssoft key.
The Settings menu is displayed.
̈ Press
for more than 2 seconds.
The cassette rewinds.
i
The cassette winds forward or back un-
til you interrupt it or until it reaches the
end / beginning of the tape.
̈ Press
.
୴୴
This will switch skip blank on or off.
i
The side is switched at the end of the
tape and cassette playback restarts.
Cassette playback starts immediately
at the beginning of the tape.
37
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Audio
Cassette Mode
̈ Press the Dolby Bsoft key.
i
i
This will switch Dolby B NR on or off.
Empty box : Skip blank off
DOLBY and the double D sym-
bol
are trademarks of the
Box filled in : Skip blank on
Display with Dolby B NR switched off:
Dolby Laboratories Licensing
Corporation.
Dolby noise reduction is manu-
factured under license from
Dolby Laboratories Licensing
Corporation.
The Tape main menu is displayed short-
ly after switching off or on.
Dolby B NR Noise Reduction
Dolby B NR should be switched on for opti-
mum playback of cassettes recorded with
Dolby B NR.
Display with Dolby B NR switched on:
Switching Dolby B NR on/off:
̈ Call up the Tape main menu
(୴ Page 35).
38
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Audio
CD Mode
CD Mode
General information
̈ Insert an audio CD into the Audio 50 or
the CD changer* (୴ Page 40).
Accident hazard
G
The system may not be able to play some
audio CDs with copy protection.
Only insert CDs into the Audio 50 and the
CD changer* when the vehicle is at a stand-
still. When driving the vehicle, doing this
may create an accident hazard by diverting
your attention from the traffic.
CD drive in the Audio 50 control unit
CDs should be handled with care in order
to prevent malfunction when playing.
Avoid leaving fingerprints and dust on the
CDs. You must not write on, or attach
stickers to CDs.
A CD drive is integrated into the Audio 50.
The drive can play audio CDs.
CD changer*
The CD changer* can play audio CDs. It is
mounted concealed in the center console.
Clean CDs occasionally with a commercial-
ly available cleaning cloth. Do not use sol-
vents, anti-static spray, etc. for cleaning
Injury hazard
G
The Audio 50 and the CD changer* are class
1 laser products. Invisible laser radiation will
cause a hazard if the housing is opened or
damaged.
purposes and replace the CDs into the CD order to load or remove a CD.
box, after use. Protect the CDs from heat
and direct sunlight.
Do not open the housing. There are no user
serviceable parts inside the Audio 50 or the
CD changer*. For safety reasons, any main-
tenance work must be performed exclusive-
ly by qualified service experts.
Switching to CD mode
̈ Call up the CD main menu (୴ Page 45).
or
39
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Audio
CD Mode
Opening CD changer*
Retracting CD changer*
̈ Press the open button 1.
or
i
The Audio 50 and the CD changer*
may not be able to play some audio
CDs with copy protection.
The Audio 50 and the CD changer*
eject CDs that cannot be read or have
been inserted incorrectly.
button on the CD changer is pressed.
The button field 2 pivots downwards,
the CD changer* retracts.
Loading CD into Audio 50
Loading CDs
The CD drive in the Audio 50 grips a CD.
Situated above the display is the CD slot
(୴ Page 13) for loading the drive.
Accident hazard
G
1 Open button
2 Button field
̈ Insert a CD into the CD slot when the
Audio 50 is switched on. The printed
side of the CD must face upwards.
Only load CDs into the Audio 50 and the CD
changer* when the vehicle is at a standstill.
If attempted during driving, the distraction
from the traffic situation leads to increased
danger of accidents.
̈ Close the cassette cover on the
Audio 50 if it is open (୴ Page 34).
Otherwise the CD changer* will not
open.
The Audio 50 pulls the CD into the unit.
If the CD is an audio CD, the system
switches to CD mode.
̈ Press the open button 1.
The button field 2 pivots upwards, the
CD changer* opens.
40
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Audio
CD Mode
There is a built-in magazine in the CD
changer*. It can hold up to six CDs.
The CD changer* has six magazine com-
partment buttons 2 for controlling the
loading procedure. LEDs in the buttons in-
dicate the status of the corresponding
magazine compartment.
You have the following loading options:
ț
Loading a single magazine compart-
ment (୴ Page 41)
ț
Loading all six magazine compart-
ments (୴ Page 42)
Loading CDs into CD changer*
Loading a single magazine compartment
i
In order to insert CDs, you will need to
open the CD changer* (୴ Page 40).
i
Button LED off:
Loading a magazine compartment in-
terrupts the playback of a CD in the
changer.
Magazine compartment empty
Button LED continuously red:
Magazine compartment full
̈ Eject the CD changer* (୴ Page 40).
The status of a magazine compartment can
also be seen when selecting a CD in the
magazine menu (୴ Page 47).
Situated above the buttons 2 is the CD
slot 1 for loading the CD changer*.
1 CD slot
2 Magazine compartment buttons
41
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Audio
CD Mode
The CD is retracted, the LED in the
magazine compartment button 2 has a
continuous red light. The system starts
playing the CD.
̈ Retract the CD changer* (୴ Page 40).
The loading procedure is complete.
1 CD slot
1 CD slot
2 Magazine compartment buttons
2 Magazine compartment buttons
Loading all six magazine compartments
̈ Briefly press the button 2 of the empty
magazine compartment that you wish
to load.
̈ Press the button 2 of an empty maga-
zine compartment for more than 2 sec-
onds.
Initial situation: All magazine compart-
ments empty.
The CD changer* loads all magazine com-
partments in order, starting with compart-
ment 1.
̈ Wait until the LED in the button 2 flash-
The LEDs of all magazine compartment
buttons 2 briefly light up green 3 times.
es green.
This indicates that the CD changer* is
requesting the CD.
̈ Wait until the LED in the first magazine
̈ Open the CD changer* (୴ Page 40).
compartment button 2 flashes green.
̈ Push an audio CD into the CD slot 1
within approx. 15 seconds. The printed
side of the CD must face upwards.
This indicates that the CD changer* is
requesting the CD.
42
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Audio
CD Mode
̈ Push an audio CD into the CD slot 1
within approx. 15 seconds. The printed
side of the CD must face upwards.
The loading procedure is complete.
Ejecting CDs
i
Ejecting CD from the Audio 50
̈ Press E.
If, instead of loading all 6 magazine
compartments, you only wish to load
compartments 1 – 4, for example, do
not push a fifth CD into the slot 1. The
CD changer* initially tries to load the
fifth CD, but then aborts the loading
procedure. The system automatically
starts playing the fourth CD.
The CD is retracted; the first magazine
compartment is loaded.
The Audio 50 ejects the CD.
̈ Remove the CD from the slot.
The LED in the corresponding maga-
zine compartment button 2 has a con-
tinuous red light.
If you do not remove the CD out of the
CD slot within approx. 15 seconds, the
Audio 50 retracts it again and starts
playing it.
The CD changer* then requests the
next CD. The LED in the corresponding
magazine compartment button 2 now
flashes green.
i
If you eject an audio CD during play-
back, the unit plays the next available
audio CD in the CD changer*.
If there are no other audio CDs avail-
able, the system switches to the audio
source listened to before CD mode.
̈ Repeat the last step until all six maga-
zine compartments have been loaded.
The system plays the sixth CD. The LED
in the sixth magazine compartment
button 2 has a continuous red light.
̈ Retract the CD changer* (୴ Page 40).
43
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Audio
CD Mode
Ejecting CDs from the CD changer*
̈ Briefly press the corresponding maga-
i
zine compartment button 2.
You have the following options:
If you are listening to a CD in the CD
changer and you eject another CD from
the changer:
While ejecting, the system interrupts
CD-playback. After ejection, the sys-
tem continues CD-playback.
The LED in the button 2 flashes red.
The CD changer* ejects the CD.
ț
ț
Ejecting a single CD (୴ Page 44)
Ejecting all CDs (୴ Page 45)
̈ Remove the CD from the slot 1 within
approx. 15 seconds.
Ejecting a single CD
If the CD is not removed within approx.
15 seconds, it is retracted again. The
system starts playing the CD.
If you eject the CD that you are current-
ly listening to:
The next available audio CD is played.
This may be a CD in the CD changer* or
the CD in the Audio 50. If there are no
other CDs available, the system
switches to the audio source listened
to before CD mode.
The ejection procedure is complete.
̈ Retract the CD changer* (୴ Page 40).
1 CD slot
2 Magazine compartment buttons
̈ Open the CD changer* (୴ Page 40).
44
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Audio
CD Mode
Ejecting all CDs
The CD changer* ejects the CDs one
after the other.
The LED in the respective magazine
compartment button 2 flashes red.
i
̈ Open the CD changer* (୴ Page 40).
If you are listening to a CD in the
changer*:
Ejection of all CDs stops CD playback.
After ejection, the CD in the Audio 50
is played. If there is no audio CD in the
Audio 50, the system switches to the
audio source listened to before CD
mode.
approx. 15 seconds.
If a CD is not removed within approx.
15 seconds, the CD changer* aborts
the ejection procedure. The CD is re-
tracted again. The system starts play-
ing the CD.
CD main menu
̈ Call up the Audio main menu
The ejection procedure is complete
when all the CDs have been removed or
when the CD changer* has aborted the
procedure.
(୴ Page 26).
1 CD slot
2 Magazine compartment buttons
̈ Retract the CD changer* (୴ Page 40).
̈ Press the button 2 of a full magazine
compartment for more than 2 seconds.
The button LEDs of all the full magazine
compartments briefly light up red 3
times.
̈ Press the CDsoft key.
The CD main menu is displayed.
45
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Audio
CD Mode
Selecting CDs
The entry is given above the track display.
It shows the number of the CD currently
being played.
The numbers 1 - 6 are assigned to the CDs
in the CD changer* magazine and the num-
ber 0 to the CD in the Audio 50.
̈ Call up the CD main menu (୴ Page 45).
You have the following selection options:
You will hear the CD listened to last. If
ț
ț
Selecting using CD list (୴ Page 46)
the CD listened to last is no longer
available, the unit plays the next avail-
able audio CD.
Selecting by directly entering the CD
number (୴ Page 47)
ț
Selecting using Magazine menu
(୴ Page 47)
This may be the CD in the Audio 50 or
a CD in the CD changer*.
̈ By pressing
or
select another
CD from the list.
If no audio CD is available, the system
does not switch to CD mode.
The message No CD insertedis
briefly displayed.
Selecting using CD list
You are only able to select loaded CDs.
̈ Press p.
i
or
A selection is only possible if at least 2
audio CDs are available.
̈ Insert an audio CD into the Audio 50 or
̈ Do not change the selection.
the CD changer* (୴ Page 41).
The CD changes. You will hear the new-
ly selected CD.
The CD list contains all the loaded CDs.
Only one list entry can be seen.
46
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Audio
CD Mode
Selecting by directly entering the CD
number
Selecting using Magazine menu
̈ By pressing c, d,
or rselect
a CD.
i
̈ Call up the CD main menu (୴ Page 45).
You are only able to select loaded CDs.
A selection is only possible if at least 2
audio CDs are available.
6.
i
= CD loaded
= CD not loaded
̈ Call up the CD main menu (୴ Page 45).
Selection example: CD No. 3 in the CD
changer*
̈ Press p.
The CD changes and the CD main menu is
displayed. You will hear the newly selected
CD.
̈ Press 3.
Selection example:
̈ Press the Magazi...soft key.
CD in the Audio 50 (CD No. 0)
Selecting track
The Magazine menu is displayed.
̈ Press 0.
You have the following options:
The CD changes. You will hear the new-
ly selected CD.
ț
ț
ț
Selecting using track skip (୴ Page 48)
Selecting using track liste (୴ Page 48)
i
Selecting by manually entering track
number (୴ Page 48)
If you select a CD that is not available,
you will continue to hear the CD cur-
rently being played.
ț
Selecting using the scan search
(୴ Page 49)
47
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Audio
CD Mode
Selecting using track skip
Track skip on the Audio 50:
̈ Call up the CD main menu (୴ Page 45).
̈ For forward skipping, press X.
or
̈ By pressing
or
select another
i
track from the list.
Forward track skip:
You will hear the next track.
̈ Press
or
.
Backward track skip:
If the track has been playing for more
than approx. 10 seconds, the unit skips
back to the beginning of this track. If
less than 10 seconds have played, the
unit skips back to the beginning of the
previous track.
̈ Do not change the selection.
You will hear the selected track.
̈
For backward skipping, press
.
Selecting by manually entering track
number
Track skip on the multifunction steering
wheel:
̈ Call up the CD main menu (୴ Page 45).
̈ Switch the multifunction display in the
instrument cluster to the Audio screen
(୴ Page 52).
Selecting using track liste
̈ Press Q.
CD currently being played. Only one list en-
try can be seen at a time, showing the
number of the track currently playing.
The Track input screen is displayed.
The number of tracks on the CD is dis-
played.
̈ For forward skipping, press j.
or
̈ For backward skipping, press k.
̈ Call up the CD main menu (୴ Page 45).
48
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Audio
CD Mode
Entry example: Track 1
Selecting using the scan search
i
̈ Press !.
The scan search starts playing each track
on the current CD for approx. 8 seconds.
It stops automatically at the track listened
to before the scan search was started. It is
also possible to end the scan search man-
ually.
When you start the scan search, the
playbackoptionNormal sequence
(୴ Page 50) is activated automatically.
Entry example: Track 15
̈ Press !and 5in quick succession.
Terminating scan search manually:
i
̈ Press the Scansoft key.
It is not possible to enter a number
greater than the number of tracks on
the CD.
Starting scan search:
The track that was playing when the
scan was terminated remains selected.
̈ Call up the CD main menu (୴ Page 45).
Audible fast forward or fast reverse
̈ Wait approx. 2 seconds after entering
the number.
̈ Call up the CD main menu (୴ Page 45).
You will hear the selected track. The
CD main menu is displayed.
̈ Press Xor
and keep
pressed.
̈ Press the Scansoft key.
̈ To terminate, release the Xor
button.
49
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Audio
CD Mode
Playback options
The Settings menu is displayed.
Explanation of playback options
The following options are available:
ț Normal sequence(୴ Page 50)
ț Repeattrack(୴ Page 50)
ț RepeatCD(୴ Page 51)
ț Track mix(୴ Page 51)
ț CD mix(୴ Page 51)
ț Normal sequence
You will hear the tracks in the normal
sequence (e.g. track 1, 2, 3 etc.).
If only one CD is available, the last
track is followed by the first track
again.
̈ By pressing cor dselect the
Repeattrackmenu item.
If two or more CDs are available, the
last track of one CD is followed by the
first track of the next CD.
The CDs change in the normal se-
quence (e.g. CD 1, 2, 3 etc.).
The last track of the last CD is followed
by the first track of the first available
CD.
̈ Press
.
Activating playback options
The option is activated. After a short
time, the CD main menu is displayed.
The activated option is given in the sta-
tus line.
Example: Repeattrackoption
̈ Call up the CD main menu (୴ Page 45).
ț Repeattrack
The track currently playing is repeated
until this function is switched off.
̈ Press the Settingssoft key.
50
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Audio
CD Mode
ț RepeatCD
ț Track mix
ț CD mix
You will hear the tracks in random or-
der (e.g. track 3, 8, 5 etc.).
i
i
It is only possible to select this function
if at least 2 audio CDs are available.
This function is only available for CDs
in the CD changer.
If two or more CDs are available, the
last track of one CD is followed by the
next CD. The CDs change in the normal
order (e.g. CD 1, 2, 3 etc.).
There must be at least 2 audio CDs in
the CD changer.
The CD currently playing is repeated
until this function is switched off.
The last track of the last CD is followed
by the first available CD.
You will hear at least 4 tracks from
one CD in random order (e.g. track 5,
7, 3, 9). Then the next CD follows.
The CDs change in random order
(e.g. CD 4, 1, 5 etc.).
51
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Audio
Multifunction steering wheel
Multifunction steering wheel
For controlling functions using the multi-
function steering wheel, the multifunction
display in the instrument cluster must be
switched to the Audio screen.
In radio mode:
In CD mode:
Switching multifunction display
̈ On the multifunction steering wheel,
press è or ÿ repeatedly until
one of the following audio screens ap-
pear in the multifunction display in the
instrument cluster.
1 Waveband
2 Station
1 Current CD
2 Current track
In cassette mode:
1 Current side
52
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Telephone*
Safety instructions
Safety instructions
Accident hazard
G
Accident hazard
G
Accident hazard
G
Using cell phones whose antenna is inside
the vehicle may cause the vehicle electronic
system to malfunction. The vehicle operat-
ing safety is thus endangered.
You may only use cell phones inside the ve-
hicle if they are connected to a separate ex-
ternal antenna approved by Mercedes-Benz.
Stop or park if you, as the driver, do not
want to use the hands-free system. Do not
stop or park where stopping is prohibited.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is cover-
ing a distance of 50 feet (approximately
14 m) every second. As driver, please de-
vote your attention primarily to the traffic.
Only use the telephone when traffic condi-
tions permit.
As driver, always observe the laws in the
country you are currently in when making
phone calls while driving.
As driver, only use the hands-free system for
making calls while driving for safety rea-
sons.
If making calls using the hands-free system,
drive attentively, close all the windows and
avoid all interfering noises.
54
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Telephone*
General information
General information
If you vehicle is fitted with a cell phone
mount, you can insert certain cell phones
into the adapter. Further information can
be obtained from your Mercedes-Benz ser-
vice station.
ț If the message
i
Enter Unlock Code is displayed,
enter the unlock code (୴ Page 59).
Only then will you be able to use all the
telephone functions.
In this operating manual, operation
from the Audio 50 and from the multi-
function steering wheel is described.
Unless otherwise specified, the de-
scriptions and the displays illustrated
relate to the Audio 50.
You will still be able to make “911”
emergency calls (୴ Page 58) if the tele-
phone is blocked by the unlock code.
i
When the cell phone is inserted into
the telephone adapter*, you can oper-
ate it:
Operation at the cell phone is de-
scribed in a separate operating manu-
al.
ț
A brief interruption of the connection
is not a malfunction of the phone.
The telephone automatically tries to
re-register on a network.
ț
ț
ț
ț
on the cell phone itself
on the Audio 50
on the multifunction steering wheel
via the Linguatronic*
The descriptions in this operating man-
ual presume that the cell phone is in-
serted into the telephone adapter.
55
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Telephone*
General information
The telephone cannot be used or cannot
be used yet in the following situations:
ț
ț
If the message Telephone being
activated, please waitis dis-
played.
ț
If the telephone is not or not yet regis-
tered on a network.
If the message Please insert
phoneis displayed.
The message No serviceappears
in the status line. The telephone auto-
matically tries to register on a network.
If there is no network available, you will
not be able to make “911” emergency
calls.
̈ Insert the cell phone into the tele-
phone adapter (୴ Vehicle operating
manual).
If you try to start an outgoing call, the
message No service Call not
possiblewill be displayed briefly.
56
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Telephone*
Operation
Operation
Switching on telephone
After switching on the telephone, the sys- Switching off telephone
tem checks whether your cell phone has
an unlock code.
̈ Switch on the Audio 50 (୴ Page 20).
̈ Turn the electronic key to position 0
and remove the key.
or
If there is an unlock code, the Audio 50 re-
quests you to enter this code.
The telephone switches off after a de-
lay of about 1 - 2 minutes.
̈ On the Audio 50, briefly press
.
This calls up the Telephone main menu.
The message Enter Unlock Code:
then appears in the display.
or
or
̈ On the Audio 50, press
than 3 seconds.
̈ In the Telephone main menu,
̈ Enter the unlock code using the num-
for longer
press
for longer than 3 seconds.
ber buttons (୴ Page 59).
or
or
̈ Switch off the cell phone (୴ Telephone
̈ On the multifunction steering wheel,
operating manual).
press í.
or
̈ Switch on the cell phone (୴ Telephone
operating manual).
57
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Telephone*
Operation
“911” emergency calls
Warning
Making emergency call (unlock code not Making emergency call (unlock code al-
entered yet) ready entered)
You can make an emergency call from the ̈ On the Audio 50, press in sequence the
G
cell phone or from the Audio 50.
number buttons 9, !and !.
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.
Calling from the cell phone (୴ Telephone
operating manual).
̈ On the Audio 50, press Jor, if the
Telephone menu has been called up in
the multifunction display, on the multi-
function steering wheel press í.
Calling from the Audio 50:
i
The telephone establishes the connec-
tion, you will hear the ringing tone.
The following conditions must be met
for a “911” emergency call:
̈ Wait until someone answers and de-
ț
ț
telephone switched on
scribe the emergency situation.
available cell phone network
̈ On the Audio 50, press the 911soft
If you cannot make an emergency call,
you will have to initiate rescue mea-
sures yourself.
key.
The telephone establishes the connec-
tion, you will hear the ringing tone.
The “911” emergency call will also func-
tion if the telephone is blocked by the un-
lock code.
̈ Wait until someone answers and de-
scribe the emergency situation.
58
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Telephone*
Operation
Unlock code entry
Example: Unlock code 230
Switching to telephone mode
The unlock code protects the telephone
from unauthorized users. You can activate
the unlock code on the telephone
̈ In sequence, press the number
With the Audio 50 switched on, you can
switch to telephone mode from any other
operating mode as follows:
buttons 2, 3and 0.
Deleting the last one or more numbers:
(୴ Telephone operating manual).
̈ Press
.
Memorize the unlock code.
more times.
If applicable, the number of missed or
unanswered calls is displayed
(୴ Page 60).
If the unlock code has been activated, the
telephone functions will only be available
after you have entered the code.
̈ After entering all the numbers press p
or the OKsoft key.
or
̈ Press J.
If the entry is correct, all the telephone
functions are available.
“911” emergency calls can also be made
without entering the unlock code
(୴ Page 58).
After registering, you will see Readyin or
୴୴
̈ Initiate an outgoing call (୴ Page 62).
If the entry is incorrect, you will have to
enter the unlock code again.
59
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Telephone*
Operation
The system automatically switches to tele- This will display the number of missed or
Telephone main menu
̈ Press
phone mode:
unanswered calls that were received while
the telephone was switched on.
.
ț
ț
ț
with an incoming call
The Telephone main menu is displayed.
Readyis displayed in the center of the
status line.
CDMA-Network: If you are not in a
home network, the roaming indicator
“R” will be shown.
Displaying calls:
if you initiate an outgoing call
̈ Press the Rcvd #soft key.
if the cell phone is inserted into the
telephone adapter* and you initiate an
outgoing call on the cell phone
The Rcvd #list is displayed
(୴ Page 63).
Missed or unanswered calls
Deleting missed calls and quitting menu:
When you call up the Telephone main
menu, the Missed Calls menu will appear
first, if applicable.
̈ Press the Returnsoft key.
The number of missed calls is reset
to 0. The Audio 50 returns to the Tele-
phone main menu.
The following messages may also be dis-
played:
ț Please insert phone
̈ Insert the cell phone into the tele-
phone adapter (୴ Vehicle operating
manual).
ț Telephone not installed
There is no telephone adapter installed
in your vehicle.
60
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Telephone*
Operation
From the Telephone main menu you have
the following options
You can also immediately redial the phone
number dialed last.
ț
ț
ț
ț
ț
viewing outgoing calls (୴ Page 64).
viewing incoming calls (୴ Page 63).
Initiating redial function!(୴ Page 61).
entering a phone number (୴ Page 62).
̈ Briefly press the Jbutton twice in
quick succession.
This starts the dialing procedure for the
Incoming call
i
calling up the telephone book
(୴ Page 68)
The caller’s number only appears if it is
transmitted.
The caller’s name only appears if, in ad-
dition, the number and the name are
stored in the telephone book
(୴ Page 68).
You will hear the ringing tone in the event
of an incoming call. The call screen is dis-
played on the Audio 50.
Initiating redial function
̈ In the Telephone main menu
(୴ Page 60), press the Dialed #
soft key.
This displays a list containing the last
10 outgoing calls. You can select an en-
try from this list and then start the call
(୴ Page 64).
The call screen also appears in the multi-
function display in the instrument cluster.
61
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Telephone*
Operation
Accepting call
On the Audio 50:
̈ Press J.
ț
ț
selecting an entry from the
Dialed #list (୴ Page 64).
i
It is also possible to accept or termi-
nate a call from the cell phone
(୴ Telephone operating manual).
using Speed dial (୴ Page 65).
Entering phone number directly
On the multifunction steering wheel:
Outgoing call
̈ Call up the Telephone main menu
̈ Press í.
You will need to enter a number for an out-
going call.
Once you have accepted, the call is ac-
tive.
̈ Using the 0- 9buttons, enter the
phone number.
The following options are available:
You will conduct the call over the
hands-free system. The volume of the
call can be adjusted (୴ Page 20).
Other operating functions can be found
under “Active call” (୴ Page 66).
ț
Entering phone number directly
̈ Press the Deletesoft key briefly
or press and hold.
ț
ț
using the Redial function (୴ Page 63).
̈ After entering the phone number cor-
Calling up the telephone book and se-
rectly, start the call (୴ Page 66).
lecting an entry (୴ Page 68).
Terminating call
On the Audio 50:
̈ Press I.
ț
selecting an entry from the Recvd #
list (୴ Page 63).
On the multifunction steering wheel:
̈ Press ì.
62
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Telephone*
Operation
Redial function
̈ Briefly press the í button twice in
Calling up Recvd #list:
quick succession.
The redial function starts the call to the
last phone number dialed.
̈ In the Telephone main menu, press the
Recvd #soft key.
i
On the Audio 50:
The list is displayed, with the last in-
coming call highlighted. The phone
number is given in the status line.
If you only press the í button once,
this will call up the Dialed #list in
the multifunction display.
̈ Briefly press the Jbutton twice in
quick succession.
The Dialed #list contains at most
the last 10 outgoing calls. You will see
the last outgoing call. You can select a
call and then start the call (୴ Page 65).
i
If you press Jonce, the
Dialed #list appears on the
Audio 50. This list contains at most the
last 10 outgoing calls.
Selecting entry from the Recvd # list
You can select an entry from the
Dialed #list and then start the call
(୴ Page 64).
Switching list display:
The Audio 50 automatically saves a list of
the last 10 incoming calls. The list is or-
dered chronologically with the last incom-
ing call at the start of the list. If the list is
full, the oldest entry is overwritten with a
new one.
̈ Press the 123soft key.
This will switch to the number display.
or
On the multifunction steering wheel:
̈ Switch the multifunction display in the
instrument cluster to the Telephone
main screen (୴ Page 73).
̈ Press the ABCsoft key.
This will switch to the name display.
୴୴
63
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Telephone*
Operation
Selecting entry from the Dialed #list or
i
The Audio 50 automatically saves a list of ̈ In the Telephone main menu, press the
The number and name displays are
only possible if the caller has transmit-
ted his phone number.
the last 10 outgoing calls. The list is or-
dered chronologically with the last outgo-
ing call at the start of the list. If the list is
full, the oldest entry is overwritten with a
new one.
Dialed #soft key.
The list is displayed on the Audio 50,
with the last outgoing call highlighted.
In addition for the name display, the
phone number and the name must also
be stored in the telephone book.
Selecting from the Audio 50
Calling up Dialed #list:
̈ Press Jonce.
Selecting list entry:
̈ By pressing
or
select the de-
sired entry.
Switching list display:
̈ After selecting the desired entry, start
i
the call (୴ Page 66).
̈ Press the 123soft key.
This will switch to the number display.
or
If you press the Jbutton twice,
the telephone immediately starts es-
tablishing a connection to the phone
number of the last outgoing call.
̈ Press the ABCsoft key.
This will switch to the name display.
64
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Telephone*
Operation
Speed dial
i
i
You can store and call up phone numbers
in the speed dial memory on the telephone
(୴ Telephone operating manual).
For the name display, the phone num-
ber and the name must be stored in the
telephone book.
If you press the í button twice, the
telephone immediately starts estab-
lishing a connection to the phone num-
ber of the last outgoing call.
It is also possible to do this from the
Audio 50.
Selecting list entry:
You will see the last outgoing call in the
multifunction display.
̈ By pressing cor
select the de-
̈ Call up the Telephone main menu
sired entry.
(୴ Page 60).
i
̈ After selecting the desired entry, start
̈ Press one of the buttons !- 9for
the call (୴ Page 66).
When you press ì, the Telephone
main menu will be displayed again.
more than 2 seconds.
The telephone automatically starts call-
ing the number stored.
Selecting from the multifunction steering
wheel
Selecting list entry:
or
Calling up Dialed #list:
̈ Press j or k repeatedly until
the desired entry is given in the multi-
function display in the instrument clus-
ter.
̈ Briefly press one of the buttons !-
̈ Switch the multifunction display in the
instrument cluster to the Telephone
main screen (୴ Page 73).
9.
̈ Starting the call (୴ Page 66).
̈ After selecting the desired entry, start
̈ Press í once
the call (୴ Page 66).
65
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Telephone*
Operation
Starting call
The volume of the call can be adjusted Terminating call
(୴ Page 20).
Other operating functions can be found
under “Active call” (୴ Page 66).
On the Audio 50:
On the Audio 50:
̈ Enter a phone number (୴ Page 62).
̈ Press J.
̈ Press I.
On the multifunction steering wheel:
On the multifunction steering wheel:
̈ Enter a phone number (୴ Page 62).
̈ Press í.
The telephone establishes the connec-
tion to the phone number entered or
selected.
̈ Press ì.
Active call
The telephone establishes the connec-
tion to the phone number entered or
selected.
If the person you are calling answers,
the call is active. You will conduct the
call over the hands-free system.
The volume of the call can be adjusted
(୴ Page 20).
If you or the person you are calling an-
swers, the call is active.
The call screen is displayed. The call dura-
tion is given in the display.
Display on the Audio 50:
You will hear the ringing tone if the line
is not busy.
If the person you are calling answers,
the call is active.
You will conduct the call over the
hands-free system.
Other operating functions can be found
under “Active call” (୴ Page 66).
66
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Telephone*
Operation
Display in the multifunction display:
Terminating active call
On the Audio 50
Sending sequences of digits
Answering machines or other devices can
be controlled by sequences of digits (e.g.
remote inquiry).
̈ Press I.
On the multifunction steering wheel
You can enter the sequence of digits man-
ually or send a sequence saved in the tele-
phone book.
̈ Press ì.
Switching hands-free microphone on/
off
Entering sequence of digits:
The following functions are available dur-
ing a call:
̈ For each digit press one of the corre-
sponding buttons
̈ Press the Mic. offsoft key.
or
ț
ț
Terminating active call (୴ Page 67)
0- 9.
̈ Press the Mic. onsoft key.
Switching hands-free microphone on/
You can also send the characters Q
off (୴ Page 67)
(*) and
(#).
If the microphone is switched off, the
other person will not hear you. You will
continue to hear him/her.
ț
Sending sequences of digits
(୴ Page 67)
67
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Telephone*
Operation
Telephone book
i
i
The telephone book is sorted in alphabeti-
cal order and contains the first 500 tele-
phone entries.
Depending on the entry made on the
telephone, various logos may be as-
signed to the phone numbers:
When you press ì, the Telephone
main menu will be displayed again.
The following options are now available:
Mail address
Home number
Work number
Fax number
Main number
Mobile number
Pager number
Calling up the telephone book
ț
ț
ț
switching the telephone book display
on the Audio 50 (୴ Page 69).
On the Audio 50:
̈ In the Telephone main menu, press the
Selecting telephone book entry
(୴ Page 69) and starting the call.
Ph.booksoft key.
on the Audio 50 adding a voice tag to a
telephone book entry (୴ Page 73).
On the multifunction steering wheel:
̈ Switch the multifunction display in the
instrument cluster to the Telephone
main screen (୴ Page 73).
The telephone book is displayed on the
Audio 50, with one entry highlighted.
̈ Press j or k.
A telephone book entry appears in the
multifunction display.
68
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Telephone*
Operation
Switching telephone book display
Selecting telephone book entry
i
̈ On the Audio 50, call up the telephone ̈ Call up the Telephone book
Example of 7button:
book (୴ Page 68).
(୴ Page 68).
press 1 x = P
press 2 x = Q
press 3 x = R
press 4 x = S
press 5 x = 7
̈ Press the 123soft key.
Selection on the Audio 50:
This will switch to the number display.
The name of the highlighted entry is
still given in the status line.
̈ By pressing cor dselect the de-
sired entry.
i
or
The first entry beginning with the char-
acter entered is selected. If there is no
corresponding entry, the last entry with
the previous character is selected.
Press cor dfor longer to acceler-
ate the selection.
̈ Press the ABCsoft key.
This will switch to the name display.
The number of the highlighted entry is
still given in the status line.
or
̈ If desired, change the selection using
̈ Using the buttons,
୴୴
the cor dbutton.
!- 0enter a character. You will
have to press a button one or more
times in quick succession.
69
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Telephone*
Operation
Selection from the multifunction steering
wheel:
Voice tag
̈ Press the
soft key.
In vehicles with LINGUATRONIC* you can
also add a voice tag to telephone book en-
tries using Audio 50.
If a voice tag has not yet been assigned
to this telephone book entry, you will
be requested to repeat the text tag
twice.
̈ Press j or k repeatedly until
the desired entry is given in the multi-
function display in the instrument clus-
ter.
i
̈ Say the texttag twice.
You can add one voice tag per tele-
phone book entry.
Now you can also call up the telephone
book entry using LINGUATRONIC*
(୴ LINGUATRONIC* operating
manual).
After selecting, you can start the call to the
selected entry (୴ Page 66).
LINGUATRONIC* can announce all
added voice tags (୴ LINGUATRONIC*
operating manual).
or
̈ Select the desired telephone book en-
If a voice tag has already been assigned
to this telephone book entry, you will
be asked whether you want to delete
this voice tag.
try (୴ Page 69).
70
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Telephone*
SMS
SMS
You can receive, read and delete SMS
messages.
Switching between Sender and Subject
̈ Press the Sendersoft key.
You can have the incoming SMS displayed
The sender’s phone number is dis-
played.
If a new SMS has been received, an enve- with the sender or the subject. If you have
lope symbol appears on the right of the
status line.
selected the sender, the telephone num-
ber is displayed.
Selecting message
̈ Call up the SMS menu (୴ Page 71).
i
̈ By pressing cor dselect a mes-
The caller’s number only appears if it is
transmitted.
sage.
In the status line you will be able to see
when the message was received.
̈ Press the Subjectsoft key.
or
SMS menu
Reading message
̈ Call up the Telephone main menu
̈ Select a message (୴ Page 71) and
(୴ Page 60).
press p.
̈ Press the SMSsoft key.
୴୴
This displays the text of the message.
The SMS menu is displayed.
71
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Telephone*
SMS
̈ Press p.
The message is deleted. The SMS
menu is displayed.
Quitting the SMS menu
̈ Press the Returnsoft key.
This will return you to the Telephone
main menu.
or
̈ By pressing rselect the entry No.
̈ Press cor
.
̈ Press p.
You can scroll through the text of the
message.
The message is not deleted. The SMS
menu is displayed.
Deleting message
or
̈ Select a message (୴ Page 71).
̈ Press the Deletesoft key.
̈ Press the Returnsoft key.
The message is not deleted. The SMS
menu is displayed.
̈ By pressing
select the entry Yes.
72
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Telephone*
Multifunction steering wheel
Multifunction steering wheel
Using the telephone from the multifunction Main screen:
steering wheel presumes in some cases
that the multifunction display in the instru-
ment cluster is switched to the Telephone
main menu.
Switching multifunction display
̈ On the multifunction steering wheel,
press è or ÿ repeatedly until
1 Network provider
2 Receiving signal strength
the Telephone screen appears in the
multifunction display in the instrument
cluster.
In the list screen, instead of the Ready
message, either a telephone book entry or
one of the last 10 outgoing calls will be dis-
played.
The main screen or a list screen are dis-
played.
̈ If you see the list screen, press ì.
This will switch to Telephone main
screen.
73
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Service
System menu
System menu
In the System menu you can make settings Setting the time
̈ Press cor d.
that relate to the entire system.
This changes the time in half-hour in-
crements.
i
It is only possible to set the time when
there is GPS reception.
The time change to summer or winter
time does not take place automatical-
ly. You will have to do this manually.
Calling up the System menu
̈ Press s.
̈ Press the Returnsoft key.
The System menu is displayed. The
new setting is stored.
The System menu is displayed.
i
You should set the time sent by the GPS
satellites UTC to the correct time zone.
The time in the vehicle instrument clus-
ter changes automatically at the same
time if the instrument cluster has been
set accordingly (୴ Vehicle operating
manual).
̈ Call up the Service menu (୴ Page 76).
̈ Press the Clocksoft key.
You now have the following options:
ț
ț
ț
Setting the time! (୴ Page 76).
Perform Display settings (୴ Page 77).
Setting the language! (୴ Page 78).
76
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Service
System menu
Display settings
ț Day modeoption:
The display is set constantly to the
Day design.
̈ Press
or r.
This will set the brightness.
Calling up the display settings menu
̈ Call up the Service menu (୴ Page 76).
̈ Press the Displaysoft key.
̈ Press the Resetsoft key if desired.
ț Night modeoption:
The display is set constantly to the
Night design.
This will set the brightness to the cen-
ter setting.
The Display settings menu is displayed.
̈ Press the Returnsoft key.
ț Automaticoption:
The display design changes de-
pending on the vehicle lighting con-
ditions.
The new setting is stored.
Linguatronic* help text
If your vehicle is fitted with Linguatronic*,
you can switch the help text on or off from
the Audio 50.
The help text will then appear in the
display of the Audio 50 when you are
operating the system using Linguatronic
(୴ Linguatronic* operating manual).
Brightness setting
̈ Call up the Display settings menu
Changing the display design
(୴ Page 77).
̈ Call up the Display settings menu
̈ Press the Bright.soft key.
(୴ Page 77)
The brightness screen is displayed.
̈ By pressing cor dselect a design.
̈ Press p.
Switching on/off:
̈ Call up the Display settings menu
୴୴
(୴ Page 77)
77
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Service
System menu
̈ Press the Linguasoft key.
Setting the language
ț Same as inst. clusterop-
tion:
The Help text screen is displayed.
You can set the display language.
̈ Call up the System menu (୴ Page 76).
̈ Press the Languag.soft key.
The language list is displayed.
The system installs the language
that is also selected in the instru-
ment cluster.
ț
Other options:
The system installs the appropriate
language.
The box next to the HelpText menu
item indicates whether the help text is
switched on or off.
i
̈ By pressing cor dselect an entry
Empty box = off
Filled box = on
from the list.
̈ Press p.
̈ Press p.
This will switch the help text on or off.
78
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Technical terminology
Autostore
Enters the best-received stations in the
Fader
(Fader control)
SCAN search
Plays receivable radio stations, CD /
cassette tracks in succession for ap-
prox. 8 seconds.
autostore memory, in order of their re-
ception quality.
Volume control between front and rear
loudspeakers.
Balance
Linguatronic*
SMS
Volume adjustment between left and
Voice control system
(Short Message Service)
right loudspeakers.
Service for transmitting short text mes-
sages and other information.
Logic 7
Dolby B NR
Ambient sound playback system which
permits a better spatial sound quality
compared to stereo sound.
(Dolby B Noise Reduction)
Noise reduction system in cassette
mode.
Unlock code
Protects the telephone against unau-
thorized users.
Soft keys
Keys which have different functions de-
pending on the operating mode select-
ed.
79
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Index
A
C
CD
Accepting
Call (telephone)
accepting 62
starting 66
terminating 66
Calling up
Copy protection 39, 40
ejecting 43
Forward 49
loading 40, 41
Mix 50
Call (telephone) 62
Accident hazard 5, 34, 39, 40, 54
Active call 66
Adjusting
Balance 21
Bass 22
Fader 21
Telephone book 68
Cassette
Repeat CD 50
Repeat track 50
Reverse 49
ejecting 35
Sound functions 22
Treble 22
Volume 20
Forward 37
inserting 34
Rewind 37
selecting 46
Selecting track 47
Track mix 50
Adjusting sound functions 22
Adjusting the bass 22
Adjusting the treble 22
Audio 50
switching off 20
switching on 20
Automatic volume control 21
Autostore 29, 32, 79
Switching side 35
Cassette mode 34
Operating elements 10
switching to 34
CD changer*
opening 40
retracting 40
CD Mode
General information 39
CD mode 39
Operating elements 12
switching to 39
CD slot 13
B
Changing
Balance 79
adjusting 21
Bass 22
Audio source 26
Display design 77
Changing audio source 26
81
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Index
Closing
Entering
Frequency (radio mode) 31
L
Cassette cover 34
Linguatronic* help text
switching off 77
switching on 77
List (telephone mode)
Dialed # 64
Recvd # 63
Loading
CD 40, 41
Logic 7 22, 79
Copy protection 39, 40
Phone number 62
Unlock code 59
Entering phone number 62
Entering unlock code 59
D
Deleting
SMS 72
Dialed # list 64
Display
F
Fader 79
adjusting 21
Faults 5
Changing design 77
Enter Unlock Code 55, 57
No Network available 56
No service 56
Forward
M
Frequency entry (radio mode) 31
Manual tuning 30
Menu system 18
Mix
Please insert phone 56, 60
Setting brightness 77
Telephone unavailable 60
Dolby B NR 38, 79
CD 50
G
Track (CD mode) 50
Multifunction steering wheel
Operating elements 16
Mute function 26
General information
on the CD mode 39
on the telephone mode 55
E
Ejecting
Cassette 35
CD 43
“911” emergency calls 58
ENTER UNLOCK CODE 55, 57
I
N
Incoming call 61
Injury hazard 39
Inserting
NO NETWORK AVAILABLE 56
NO SERVICE 56
Noise reduction 38
Cassette 34
82
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Index
O
Recvd # list 63
Redial function 61, 63
Repeat
Selecting track
Opening
in cassette mode 36
in CD mode 47
Sending
Sequences of digits
(telephone mode) 67
Sending sequences of digits
(telephone mode) 67
Servicing 5
Cassette cover 34
Opening (CD changer*) 40
Opening/closing cassette cover 34
Operating elements
Cassette mode 10
CD 50
Track (CD mode) 50
Reverse
in CD mode 49
Rewind
CD mode 12
Multifunction steering wheel 16
Radio mode 8
Setting
Telephone mode 14
Operating safety 5
Outgoing call 62
Display brightness 77
Language 78
Time 76
S
in cassette mode 36
in radio mode 30
Search
Setting the time 76
Short Message Service see SMS
Skip blank (cassette mode) 37
SMS 71, 79
P
Phone call
terminating 62, 66, 67
PLEASE INSERT PHONE 56, 60
Presets
Station 28
deleting 72
Menu 71
reading 71
Station 29, 31
Selecting
Cassette track 36
CD 46
CD track 47
Station 27
Telephone book entry 69
R
Radio mode 27
Operating elements 8
switching to 27
Reading
Soft keys 79
Speed dial 65
Starting
Call (telephone) 66
SMS 71
83
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Index
Station
Switching on
Treble 22
presets 29, 31
Audio 50 20
Dolby B NR 38
U
search 28
UTC 76
selecting 27
Switching
Hands-free microphone 67
Linguatronic* help text 77
Mute function 26
Noise reduction 38
Telephone 57
V
Cassette side 35
Multifunction display 52, 73
Telephone book display 69
to cassette mode 34
to CD mode 39
to radio mode 27
to telephone mode 59
Waveband 27
Voice tag 70
Volume
adjusting 20
Automatic volume control 21
Switching wavebands 27
T
W
Telephone
switching off 57
switching on 57
Telephone book 68
calling up 68
Switching hands-free
microphone on/off 67
Switching multifunction display 52, 73
Switching off
Selecting entry 69
Switching display 69
Telephone mode 55
General information 55
Operating elements 14
switching to 59
TELEPHONE UNAVAILABLE 60
Terminating
Call (telephone) 66
Phone call 62, 66, 67
Track mix (CD mode) 50
Audio 50 20
Dolby B NR 38
Hands-free microphone 67
Linguatronic* help text 77
Mute function 26
Noise reduction 38
Telephone 57
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Mercedes Benz will be pleased to answer
all your questions:
Mercedes-Benz contact
Telephone: 00800-17777777
international: +4969-95307277
Internet
For further information on Mercedes Benz
vehicles and on DaimlerChrysler
please visit us on the internet:
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Printing
HAGO Druck und Medien GmbH
Technical editing
If you have questions or suggestions re-
garding this operating manual, please con-
tact the technical editing department at
the following address:
DaimlerChrylser AG, HPC: R821,
70546 Stuttgart
Editorial close: 30.05.2002
Re-printing, translation and
coping (including excerpts),
are prohibited without our written
permission.
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