Page 101 of 354
98 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
CD player (optional)1Audio system is switched off.
2The CD player is switched on.
3The number of the CD currently playing is displayed 
if you are using a CD changer.
4Track number.
The radio must be switched on.
The CD player must be switched on.
Press the è or ÿ button repeatedly until 
display (2) appears.
Press the j or k button repeatedly until the 
required track number (4) is displayed.
Pressing the è or ÿ button displays the next or 
previous system.
Note:
To select a CD from the magazine, press a number on 
the audio or the (optional) COMAND system located in 
center dashboard. 
     
        
        Page 102 of 354
99 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.
Note:
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 
center dashboard. 
     
        
        Page 116 of 354
113 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index To return setting menus (4 to 8) to their factory settings:
•Call up the individual setting preliminary 
display (1).
•Press theJbutton in the instrument cluster for 
approximately 3 seconds. Display (9) will appear.
•Press theJbutton 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 theJbutton 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. 
     
        
        Page 138 of 354

135 Audio system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Operation – audio and telephone
These instructions are intended to help you become 
acquainted with your Mercedes- Benz car 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. 
     
        
        Page 139 of 354
136 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 139
2Telephone mode selector, see page 151
3S e e k ,  s e e  p a g e  141 ,  14 5  a n d 14 9
4Radio mode selector, see page 141
5Tune, see page 141 and 142
Fast forward / reverse, see page 145 and 1496CD mode selector, see page 148
7Display panel, see page 143
8Alpha-numeric keypad for
station storage and frequency entry, see page 142
CD / Track access, see page 148 and 150
optional telephone, see page 151
9Function button, see page 142 and 150 
     
        
        Page 140 of 354
137 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 141
tone controls, see page 139
scan, see page 142
Tape eject, see page 144
Tape track select, see page 144
Dolby, see page 146
CD random / repeat, see page 150
11Tape mode selector, see page 143
Antitheft 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. 
     
        
        Page 141 of 354
138 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. 
     
        
        Page 142 of 354

139 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, 
FADER 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.