Page 111 of 302

107 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 113 of 302

109 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 114 of 302

110 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 changer1 is instal led , it can be operate d from t he 
front control panel of the radio. A loaded magazine 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 
     
        
        Page 117 of 302

113 Audio system
Te ch n ica l
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 button. The entered number can 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. 
     
        
        Page 119 of 302

115 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Accepting incoming call in telephone mode
With an incoming call, the ringing tone will be heard 
and the message “CALL” appears in the display. Press 
the SND key to answer the call.
Accepting incoming call in tape, CD or radio mode
If the telephone is activated in the background 
(telephone symbol in the display), then a switch is made 
automatically to telephone when an incoming call is 
received. The audio source is muted, the ringing tone is 
heard and the message “CALL” appears. After the call 
has been terminated, the previously selected audio 
source is resumed.
Terminating call
A current call can be terminated by pressing the END 
button.Component malfunctions
The radio, CD changer
1, and Mercedes-Benz integrated 
cellular telephone
1 are part of a fiberoptic networked 
system. Failure of one of the components can lead to 
malfunctions of the other components. Please contact 
your authorized Mercedes-Benz Center, or call 
Mercedes-Benz Client Assistance Center (in the USA 
only) at 1-800-FOR-MERCedes, or Customer Service (in 
Canada) at 1-800-387-0100.
1 Optional equipment 
     
        
        Page 136 of 302

132 Telephone
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Telephone, general
See separate instruction manual for instructions on how 
to operate the telephone.
1 Observe the legal requirements in all countries concerned.
Wa r n i n g !
Your concentration on the road and traffic 
conditions must take priority. Only use the 
telephone
1 when road and traffic conditions 
permit. 
Park if you wish to use the handset rather than the 
hands-free device to make a call.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 .  
Never operate radio transmitters equipped with a 
built-in or attached antenna (i.e. without being 
connected to an external antenna) from inside the 
vehicle while the engine is running. Doing so could 
lead to a malfunction of the vehicle’s electronic 
system, possibly resulting in an accident and 
personal injury. 
     
        
        Page 143 of 302

139 Hardtop
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 5. After the hardtop has unlocked, remove the key 
from the steering lock and turn radio and telephone 
off to lower antenna. The indicator lamp in the soft 
top switch should go out.
Important!
Removal of the key from the steering lock is a safety 
measure ensuring that the key cannot be turned to 
position 2 and the soft top switch is without 
function should anybody push the switch forward 
causing the roof locking mechanism to work. If 
hands are at that moment between roof and car 
body they can be badly injured.6. Lift the hardtop vertically from its attachment points 
(3) and locating points (4) and carefully remove to 
the rear. Exercise caution when maneuvering the 
top. To avoid paint damage, the top’s mounting pins 
must not be allowed to contact the body.
Wa r n i n g !
To prevent possible accidents, drive the vehicle 
only with the hardtop either completely closed and 
locked, or fully lowered into its storage 
compartment. 
     
        
        Page 144 of 302
140 Hardtop
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Attaching hardtop
1. Engage parking brake and turn key in steering lock 
to position 2.
2. Lower roll bar, see page 118.
3. Open doors.
4. Turn radio and telephone off to lower power 
antenna, turn key in steering lock to position 0 and 
remove.5. From the rear of the vehicle, lift the hardtop 
carefully over the attachment points (1) and locating 
points (2). First guide the rear pins of the top 
vertically into the rear attachment points, then 
lower the roof onto the vehicle and locate the front 
locking pins. Exercise caution when maneuvering 
the top. To avoid paint damage, the top’s mounting 
pins must not be allowed to contact the body.