Page 94 of 341
91 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Cassette player1Audio system is switched off.
2The cassette player is switched on.
3Side being played.
The radio must be switched on.
The cassette player must be switched on.
Press the è or ÿ button repeatedly until
display (2) appears.
Pressing the j button fast forwards on to the next
track.
Pressing the k button rewinds the cassette to the
beginning of the current track.
Pressing the è or ÿ button displays the next or
previous system.
Notes:
To select the reverse side of the tape, press button below
track number on the audio system display, or enter
request on the (optional) COMAND system located in
the center dashboard.
To eject the inserted tape, press “EJ” on the audio
system (see page 131) or “EJT” on the (optional)
COMAND system.
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104 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Press the è or ÿ button repeatedly until the
individual setting preliminary display (1) appear.
Press the j or k button until the required setting
menu (2 to 8) is displayed.
Pressing the æ or ç button sets the time in
setting menus (2, 3) and controls the selection marker
in setting menus (4 to 8).
The settings made are stored and applied immediately.
The individual setting preliminary display (1) will
appear again after you have run through all the setting
menus.
Pressing the è or ÿ button displays the next or
previous system.
Notes:
Settings can only be selected with the vehicle stationary
or moving slowly.
The individual setting preliminary display (1) will
appear if you speed up.
The setting menu previously called up will reappear
when the vehicle stops or slows down, providing no
other system has been called up in the meantime.To return setting menus (4 to 8) to their factory settings:
•Call up the individual setting preliminary
display (1).
•Press the J button in the instrument cluster for
approximately 3 seconds. Display (9) will appear.
•Press the J button once more, the message
“RESET TO FACTORY SETTINGS” appears in the
display.
The individual setting preliminary display (1) will
appear if you do not press the J button within
about 5 seconds. The setting menus will not be
reset.
Setting the audio volume
You can only adjust the volume of the system currently
in use. The volume setting for each system (audio,
telephone, navigation and voice control system) is stored
separately.
Setting button:
æ increases the volume.
ç reduces the volume.
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Page 126 of 341

123 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Audio and telephone, operation
These instructions are intended to help you become
acquainted with your Mercedes-Benz vehicle radio.
They contain useful tips and a detailed description of
the user functions.
The right to correct errors and make technical amendments is
reserved.
Operating safety1Optional equipment
Wa r n i n g !
In order to avoid distraction which could lead to an
accident, system settings should be entered with
the vehicle at standstill and systems should be
operated by the driver only when traffic conditions
permit. Always pay full attention to traffic
conditions first before operating system controls
while driving.Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is covering
a distance of approximately 50 feet (approximately
14 m ) e v e r y s e c o n d .
Wa r n i n g !
Any alterations made to electronic components can
cause malfunctions.The radio, cassette deck, CD changer
1, telephone
1
and voice control system
1 are interconnected.
When one of the components is not operational or
has not been removed/replaced properly, the
function of other components may be impaired.
This condition might seriously impair the
operating safety of your vehicle.We recommend that you have any service work on
electronic components carried out by an
authorized Mercedes-Benz Center.
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Page 127 of 341
124 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Operating and display elements
1On/off, volume, see page 127
2Telephone mode selector, see page 139
3Seek, see page 129, 133 and 137
4Radio mode selector, see page 129
5Tune, see page 129 and 130
Fast forward/reverse, see page 133
6CD mode selector, see page 1367Display panel
The cassette slot is located behind the display panel.
For notes on playing cassettes, see page 131.
8Alpha-numeric keypad for
station storage and frequency entry, see page 130
CD/Track access, see page 138
optional telephone, see page 139
9Function button, see page 130 and 138
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Page 128 of 341
125 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 10Soft keys for
radio band selection, see page 129
tone controls, see page 127
scan, see page 130
Tape eject, see page 132
Tape track select, see page 132
Dolby, see page 134
CD Random/repeat, see page 138
11Tape mode selector, see page 131
Anti-theft system
If the power supply to the
radio has been interrupted,
“CODE” will appear on the
display when it is next
switched on. The radio will
only work after the five-digit code has been entered
using the buttons on the right-hand control panel.The code number is shown on the Radio code card,
supplied with the radio.
Important!
Never leave the Radio code card in the vehicle. Keep it in
a safe place.
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126 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Entering the code number
Switch on the radio. “CODE” will appear on the display.
Using the buttons on the alpha-numeric keypad, enter
the five digit code. Confirm by pressing the “OK” key.
If an incorrect code has been entered and confirmed,
“CODE” will reappear on the display. The correct code
must be entered once again.
If an incorrect code is entered
three times, “WAIT” will
appear on the display and the
radio will be locked out for
about 10 minutes.
Note:
The lock out time will only count down if the radio is left
switched on.Button and soft key operation
In these instructions, the alpha-numeric keypad (right
side of radio face) and the function buttons (left side of
the radio face) are referred to as “buttons” and the four
keys under the display are referred to as “soft keys”.
Note:
Do not press directly on the radio display face.
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127 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Operation
Switching on and off
Press the control knob .
The radio is switched off when the ignition key is turned
to position 0 or removed from the ignition. The radio is
switched on again when the ignition key is turned to
position 1 or 2.
Note:
The radio can also be switched on even if the ignition
key is not inserted, but will switch itself off
automatically after one hour to conserve vehicle battery
power.
Adjusting the volume
Turn the control knob - turning the knob clockwise will
increase the volume, counterclockwise will decrease the
volume.Audio functions
The AUD key is used to select the BASS, TREBLE and
BALANCE functions. Settings for bass and treble are
stored separately for the cassette and CD modes. Tone
level settings are identified by the vertical bars. The
center (flat) setting is shown by one longer bar in the
center of the display.
Bass
Press the AUD key repeatedly
until “BASS” appears in the
display.
Treble
Press the AUD key repeatedly
until “TREBLE” appears in the
display.
Press the “+” key to increase
or the “-” key to decrease the level.
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128 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fader
1
Press the AUD key repeatedly
until “FADER” appears on the
display. Press the “R” key to
move the sound to the rear
speakers or the “F” key to
move the sound to the front speakers.
Balance
Press the AUD key repeatedly
until “BALANCE” appears in
the display.
Press the “L” key to move the
sound to the left speaker or the “R” key to move the
sound to the right speaker.
1 not available on all models
Centering all audio functions
Push and hold down the
“AUD” key. All audio
functions (bass, treble,
balance and fader) are set to
center or flat positions, and
the volume is adjusted to a pre-set level.
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