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99 Audio system
Te ch n ica 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 th e ca ssette w hich  is fa cing  
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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100 Audio system
Te ch n ica l
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. 
     
        
        Page 104 of 273

101 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Fast forward / reverse
Press the   button. 
“FORWARD” will appear on 
the display and fast forward 
will start.
Press the   button. 
“REWIND” will appear on the 
display and fast reverse will 
start. 
Fast forward / reverse is stopped by pressing the same 
button again, or it will stop automatically at the 
beginning or the end of the tape. The track will 
automatically change at the end or beginning of the tape 
and play will begin.
Scanning 
Press the “SC” key. Each track 
on the cassette will be played 
for 8 seconds in ascending 
order.Note:
The beginning of a track can only be located if there is a 
break of at least 4 seconds between tracks.
Scan will be interrupted if the  ,  ,  ,   
buttons or the “SC” key is pressed.
Dolby NR
1 (noise reduction system)
To  en abl e o pti mum  
reproduction of cassettes 
recorded using the Dolby B 
system, press the “AUD” key 
followed by the NR key so the 
“NR” in the display is not highlighted. To turn off 
Dolby B noise redu ction, press t he “ NR” key so th e “NR” 
in the display is highlighted.
1 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. 
     
        
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102 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
CD mode
General notes on CD mode
Should excessive temperatures occur while in CD mode, 
“TEMP HIGH” will appear in the display and muting 
will take place. The unit will then switch back to radio 
mode until the temperature has decreased to a safe 
operating level.
Should temperatures occur while in CD mode which are 
too low, “TEMP LOW” will be displayed, but the CD will 
play. It will be sensitive to skipping if you are driving 
over rough roads.
Handle CDs carefully to prevent interference during 
playback.
Avoid fingerprints and dust on CDs. Do not write on the 
CDs or apply any label to the CDs.
Clean CDs from time to time with a commercially 
available cleaning cloth. No solvents, anti-static sprays, 
etc. should be used. Replace the CD in its container after use. Protect CDs 
from heat and direct sunlight.
1 Optional equipmentWa r n i n g !
The CD changer
1 is a Class 1 laser product. There 
is a danger of invisible laser radiation if the cover 
is opened or damaged.
Do not remove the cover. The CD changer
1 does not 
contain any parts which can be serviced by the 
user. For safety reasons, have any service work 
which may be necessary performed only by 
qualified personnel. 
     
        
        Page 106 of 273

103 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index CD changer installed
1CD changer
1 
2CD magazine
3CD tray
4CD
If  a CD ch anger1 is instal led , it can be operate d from t he 
f ront control panel of t he radio. A loa ded ma ga zine must 
be installed for CD playing.
1 Optional equipment
Loading / emptying the CD magazine
Slide the changer door to the right and press the eject 
button  . The magazine will be ejected. Remove the 
magazine. Pull out the CD tray until its stop is reached 
and place the CDs in the recess of the tray, label side up. 
Push the tray into the magazine in the direction shown 
by the arrow. Insert the loaded magazine into the 
changer.
Important!
Close the door after the magazine has been inserted.
Playing CDs
Press the CD button. The CD most recently played will 
start at the point where it was last switched off. CDs 
stored in the magazine can be selected by using the 
station preset buttons 1-6.
The magazine slot number of 
the selected CD will then be 
displayed after “CD”. The 
number of the track being 
played will be displayed after 
“TRACK”.
3
2
2
1
4 
     
        
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104 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
If there is no CD in the 
selected magazine slot, 
“NO CD” and the 
corresponding slot number 
will be displayed 
(e.g.“NO CD3”). After the last track on a CD has been 
played, the next CD will automatically be selected and 
played.
Skipping tracks forwards / backwards
Press the   button. The next track on the CD will be 
played.
Press the   button. If the track has been playing for 
more than 10 seconds, it will revert to the start of that 
track. If it has been playing for less than ten seconds it 
will revert to the preceding track. To skip several tracks, 
the respective button must be pressed until the desired 
track is reached. If the beginning or end of the CD is 
reached during the search, the first or last track will be 
played.Fa st  for wa rd / reve r se
Press the   button and hold it down for audible fast 
forward.
Press the   button and hold it down for audible 
reverse.
The search will stop when the 
button is released. The 
relative time of the track will 
be displayed during the 
search. The search mode will 
cancel if the beginning or end of the CD is reached.
Scanning
Press the  SC key. Each tra ck w il l be played for 8 second s 
in ascending order. The search will stop at the track in 
question if the  ,  ,  ,   buttons or the 
“SC” key is pressed. 
     
        
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105 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Random play / repeat function
The tracks of the current CD are played in random order 
when the random feature (RDM) is selected. Press the 
RDM key to switch on, and press RDM again to switch 
off. 
When the repeat function 
(RPT) has been selected, a 
particular track can be played 
for as many times as desired. 
Press the RPT key to switch 
on, and press RPT again to switch off.
Note:
Both functions cannot be used simultaneously.Direct track selection
Tracks can be selected directly using the buttons on the 
alpha-numeric keypad. Press the “ function button, 
followed by the track number. 
     
        
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106 Audio system
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data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Telephone operation
Various functions of the Mercedes-Benz integrated 
cellular telephone
1 can be performed and displayed via 
the car radio. Further instructions for operating the car 
telephone can be found in the operation guide for the 
cellular telephone1.
Switching the telephone on and off
Switching on: Press the   
button, “TEL” appears in the 
corner of the display.
Switching off: Press and hold 
the   button until the telephone symbol “TEL” no 
longer appears in the display, or press the “PWR” button 
on the phone’s keypad.
1 Optional equipment
Entering telephone number and starting dialing 
process
Enter the desired telephone 
number using the alpha-
numeric keypad. The number 
can have up to 32 digits, but 
only 13 of these can be 
displayed. The dialing process is started by pressing the 
SND  b utton. The entered numb er ca n be  corrected using  
the “CLR” key.
Press the CLR key briefly - 
and the last digit will be 
deleted.
Press the CLR key longer - and 
the complete number will be deleted.
Calling up the phone book
The numbers stored in the telephone memory can be 
called up via either name or number entries. The 
memory contents from the portable phone must be 
downloaded and the telephone menu must be selected 
in order to call up the phone book. Refer to the 
“Memory download” section of the cellular telephone 
operation guide for more information.