Page 119 of 304

119 Controls in detail
Audio system
Remove the cassette.
Fold the display back up manually.
The radio will switch back to radio 
mode automatically.
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 
f
 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 
e
 button.
SEEK RWD
 will be shown on the display 
and the track search will run the tape 
backwards to the start of the track cur-
rently playing. 
Press the same button again to inter-
rupt track search.
iThe cassette will not be ejected when 
the radio is switched off.!If the display is in the down position for 
more than 20 seconds, two successive 
beeps will be heard. This will continue 
at 5 second intervals until the display is 
returned to its normal position.
iThe beginning of a track can only be lo-
cated if there is a break of at least 
4 seconds between tracks. 
     
        
        Page 120 of 304

120 Controls in detailAudio systemFast forward/reverse
Press the 
d
 button.
FORWARD
 will appear on the display and 
fast forward will start.
Press the 
c
 button.
REWIND
 will appear on the display and 
fast reverse will start.
Press the same button again to stop 
fast forward/reverse, or it will stop au-
tomatically 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 or-
der.Dolby NR
1 (noise reduction system)
To enable optimum reproduction of cas-
settes recorded using the Dolby B system, 
press the AUD
 key followed by the 
NR key. 
NR is shown in the display in inversed-color 
format. To turn off Dolby B noise reduc-
tion, press the 
NR key again. The 
NR in the 
display will be shown in the original color 
format.
iThe beginning of a track can only be lo-
cated if there is a break of at least 
4 seconds between tracks.
Scan will be interrupted if the 
d
, 
c
, f
, e
 buttons or the 
SC
key is pressed.
1Dolby and the double-D symbol 
Ù
 are trade-
marks of Dolby Laboratories Licensing Corpora-
tion. The Dolby noise reduction system is
manufactured under license from Dolby Laborato-
ries Licensing Corporation. 
     
        
        Page 121 of 304

121 Controls in detail
Audio system
CD mode
General notes on CD mode
Should excessively high temperatures oc-
cur while the audio system is 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 tem-
perature has decreased to a safe operating 
level.
Should excessively low temperatures oc-
cur while the audio system is in CD mode, 
TEMP LOW
 will be displayed, but the CD will 
still be played. It will be sensitive to skip-
ping if you are driving over rough roads.
Handle CDs carefully to prevent interfer-
ence 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 com-
mercially available cleaning cloth. No sol-
vents, anti-static sprays, etc. should be 
used. Replace the CD in its container after use. 
Protect CDs from heat and direct sunlight.
Only use CDs which bear the label shown 
and that conform to the compact disc dig-
ital audio standard (IEC 60908).
Use of CDs which do not meet this stan-
dard may cause damage to the CD chang-
er. Do not play single-CDs (80 mm) with an 
adapter.
Warning!
G
The CD changer* 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* 
does not contain any parts which can be ser-
viced by the user. For safety reasons, have 
any service work which may be necessary 
performed only by qualified personnel. 
     
        
        Page 122 of 304

122 Controls in detailAudio systemCD changer* installed
1CD
2CD changer
3CD tray
4CD magazine
If a CD changer is installed, it can be oper-
ated from the front control panel of the ra-
dio. A loaded magazine must be installed 
for CD playing.Loading/unloading the CD magazine
Slide the changer door to the right.
Press the eject button 
d
.
The magazine will be ejected.
Remove the magazine.
Pull out the CD tray until its stop is 
reached.
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.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
.
If there is no CD in the selected magazine 
slot, 
NO CD
 and the corresponding slot 
number will be displayed (e.g. 
NO CD3
). Af-
ter the last track on a CD has been played, 
the next CD will automatically be selected 
and played.
!Close the door after the magazine has 
been inserted. 
     
        
        Page 123 of 304

123 Controls in detail
Audio system
Skipping tracks forwards / backwards
Press the 
f
 button.
The next track on the CD will be played.
Press the 
e
 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 10 seconds, it will revert 
to the preceding track.
To skip several tracks, the respective 
button must be pressed until the de-
sired track is reached. If the beginning 
or end of the CD is reached during the 
search, the first or last track will be 
played.Fast forward/reverse
Press the 
d
 button and hold it down 
for audible fast forward.
Press the 
c
 button and hold it down 
for audible reverse.
The search will stop when the button is re-
leased. 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 track will be played for 8 seconds 
in ascending order.
The search will stop at the track in 
question if the d
, c
, f
, e
 
buttons or the 
SC key are pressed.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.
Press 
RPT
 again to switch off.
iBoth functions cannot be used simulta-
neously. 
     
        
        Page 124 of 304

124 Controls in detailAudio systemDirect track selection
Tracks can be selected directly using the 
buttons on the alpha-numeric keypad.
Press the 
“
 function button, fol-
lowed by the track number.
Telephone* operation
Various functions of the Mercedes-Benz in-
tegrated cellular telephone can be per-
formed and displayed via the car radio. 
Further instructions for operating the car 
telephone can be found in the operation 
guide for the cellular telephone*.
Switching the telephone on and off
Switching on:
Press the 
h
 button, 
TEL
 appears in 
the corner of the display.Switching off:
Press and hold the 
h
 button until 
the telephone symbol 
TEL
 no longer ap-
pears in the display, 
or
Press the “PWR” button on the phone’s 
keypad.
Entering telephone number and start-
ing 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.
Press the 
SND
 button to start the dialing 
process.
The entered number can be corrected us-
ing the 
CLR
 key.
Press the 
CLR
 key briefly.
The last digit will be deleted.
Press the 
CLR
 key longer.
The complete number will be deleted.
Calling up the phone book
The numbers stored in 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 cel-
lular telephone operation guide for more 
information. 
     
        
        Page 125 of 304

125 Controls in detail
Audio system
Switching between name search and 
number search
Press 
ABC
 key for name search.
Press 
NUM
 key for number search.
Searching and selecting phone book 
entries by name
Press the 
ABC
 key.
The current name is shown on the dis-
play. 
Press the 
d
 or 
c
 button to se-
lect the stored entries in alphabetical 
order.
Press the 
f 
or 
e
 button to se-
lect the stored entries according to al-
phabetical initial letters (e.g. A-Adam, 
B-Brown, M-Miller).Searching and selecting phone book 
entries by number
Press the 
NUM
 key.
The current number is shown on the 
display. 
Press the 
d
 or 
c
 button to se-
lect the stored entries in numerical or-
der. 
Press the 
f
 or 
e
 button to se-
lect the stored entries in increments 
of 5 (e.g. Entry no. 2, Entry no. 7, etc.).
Placing a call
Press the 
SND
 key when a number or a 
name has been selected using the 
method described above.Manual repeat dialing (redial)
Press the 
SND
 key once to re-select the 
last entered number.
The last dialed telephone number is 
shown on the display.
Use the 
d
, c
, f
 or 
e
 but-
ton to select the numbers stored in the 
re-dial memory of the telephone.
Press the 
SND
 key a second time to 
place the call.
The abbreviation L and the number in the 
memory are shown in the top line of the 
display. 
     
        
        Page 126 of 304

126 Controls in detailAudio systemAccepting an incoming call in tele-
phone 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 an incoming call in tape, CD 
or radio mode
If the telephone is activated in the back-
ground (telephone symbol in the display), 
the audio system will automatically switch 
to telephone mode 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 ter-
minated, the previously selected audio 
source is resumed.
Terminating call
Press the 
END
 key to terminate a cur-
rent call.Component malfunctions
The radio, CD changer* and 
Mercedes-Benz integrated cellular tele-
phone* are part of a fiberoptic networked 
system. Failure of one of the components 
can lead to malfunctions of the other com-
ponents. Please contact your authorized 
Mercedes-Benz Center or call 
1-800-FOR-MERCedes for more informa-
tion in the event of a malfunction.