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93 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 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
Dolby and the double-D symbol 
Ù
 are trademarks of Dolby 
Laboratories Licensing Corporation. The Dolby noise reduction 
system is manufactured under licence from Dolby Laboratories 
Licensing Corporation.
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 car 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 alternations made to electronic components 
can cause malfunctionsThe radio, cassette deck, CD changer
1 and 
telephone
1 are interconnected. Therefore, when 
one of the components is defective or has not been 
removed / replaced properly this may impair the 
function of other components.
These malfunctions might seriously impair the 
operating safety of your vehicle.We recommend that you have any service work or 
alternations on electronic components done in an 
authorized Mercedes-Benz Center. 
     
        
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94 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 97
2Telephone mode selector, see page 108
3Seek, see page 99, 102 and 106
4Radio mode selector, see page 99
5Tune, see page 99 and 100
Fast forward / reverse, see page 103 and 1066CD mode selector, see page 105
7Display panel, see page 101
8Alpha-numeric keypad for
station storage and frequency entry, see page 100
CD / Track access, see page 105 and 107
optional telephone, see page 108
9Function button, see page 100 and 107
 
     
        
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95 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 99
tone controls, see page 97
scan, see page 100
Tape eject, see page 102
Tape track select, see page 102
Dolby, see page 103
CD random / repeat, see page 107
11Tape mode selector, see page 101
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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96 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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97 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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99 Audio system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Radio mode
Selecting radio mode
Press  button.
Selecting the band
Press the key located below 
the desired band. The band 
selected is shown in the top 
line of the display.Manual tuning
Press either the   or   
button. Step-by-step tuning in 
ascending or descending 
order of frequency will take 
place.
The first three tuning steps will take place without 
muting. The radio will then be muted and high-speed 
tuning will take place until the button is released.
The following tuning intervals will be shown on the 
display:
Seek tuning
Press either the   or   button. The radio will tune 
to the next receivable station. Frequency ranges: FM 87.9 - 107.9 MHz
AM 530 - 1710 kHz
WB approx. 162 MHz
FM 200 kHz
AM 10 kHz
WB Channels 1-7 
     
        
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101 Audio system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Cassette mode
Playing cassettes
Press the “TAPE” button. When the eject (EJ) key is 
pressed, the display folds down and the cassette slot 
becomes visible. Push the cassette into the slot until it 
engages. The cassette will be pulled in automatically.
Notes:
Do not press directly on the radio display face.
Return the display panel to its normal position by 
folding it back up and pressing gently on the display 
frame to lock in place. 
When playing mono recorded tapes (e.g. books) through 
a stereo system the sound from one track might bleed to 
the other track, despite setting the balance to the full 
left or full right speakers.
Important:
If the display is in the down position for more than 
20 seconds, 2 successive beeps will be heard. This will 
continue at 5 second intervals until the display is 
returned to its normal position.The radio will switch to 
cassette mode. Track 1 will be 
played and “SIDE 1” 
displayed. Track 1 is the side 
of the cassette which is facing 
upwards. The cassette deck will automatically detect the 
type of tape and switch the equalization automatically. 
A cassette symbol in the display indicates that a tape is 
in the mechanism. This symbol appears in all modes but 
not in cassette mode.
The cassette will not be ejected when the radio is 
switched off or another mode is selected.
If a cassette is in the 
mechanism, cassette mode 
can be selected by using the 
“TAPE” button. If no cassette 
has been inserted, the display 
will show “NO TAPE”. 
     
        
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102 Audio system
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data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Cassette eject
Press the eject (EJ) key. The display will fold down and 
the cassette will be ejected. Remove the cassette, then 
fold the display back up manually. The radio will switch 
back to radio mode automatically.
Note:
The cassette will not be ejected when the radio is 
switched off.
Important!
If the display is in the down position for more than 
20 seconds, 2 successive beeps will be heard. This will 
continue at 5 second intervals until the display is 
returned to its normal position.
Track selection
Press the track selection 
(TRK) key. The current track 
will be displayed as “SIDE 1” 
or “SIDE 2”. The track will be 
changed automatically at the 
end of the tape.Track search forwards / backwards
Press the   button. 
“SEEK FWD” will be shown on 
the display and the track 
search will run the tape 
forwards to the start of the 
next track.
Press the   button. 
“SEEK RWD” will be shown 
on the display and the track 
search will run the tape 
backwards to the start of the 
track currently playing. Track search can be interrupted 
by pressing the same button again.
Note:
The beginning of a track can only be located if there is a 
break of at least 4 seconds between tracks.