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139 Audio system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Note:
The beginning of a track can only be located if there is a 
break of at least 4 seconds between tracks.
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 enable optimum 
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 reduction, press the “NR” key so the “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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141 Audio system
Technical
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 installed, it can be operated from the 
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
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142 Audio system
Technical
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   fo rwa rd/ r eve rse
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 track will be played for 8 seconds 
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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        Page 189 of 330

186 Tele Aid
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Tele Aid system could not initiate an Information call 
(e.g. the relevant cellular phone network is not 
available). The message “INFO – CALL FAILED” appears 
in the multifunction display.
Information calls can be terminated using the 
ìbutton on the multifunction steering wheel.
Important!
If the indicator lamps do not start flashing after 
pressing one of the buttons or remain illuminated (in 
red) at any time, the Tele Aid system has detected a fault 
or the service is not currently active, and may not 
initiate a call. Visit your Mercedes-Benz Center and 
have the system checked or contact the Response Center 
at 1-800-756-9018 (in the USA) or 1-888-923-8367 (in 
Canada) as soon as possible.Upgrade Signals
Tele Aid system processes calls using the following 
priority.
•Automatic emergency – First priority
•Manual emergency – Second priority
•Roadside assistance – Third priority
•Information – Fourth priority
Should a higher priority call be initiated while you are 
connected, an upgrade (alternating) tone will be heard, 
and the appropriate indicator lamp will flash. If certain 
information such as vehicle identification number or 
customer information is not available, the operator may 
need to retransmit. During this time you will hear a 
chirp and voice contact will be interrupted. Voice 
contact will resume once the retransmission is 
completed. Once a call is concluded, a chirp will be 
heard and the appropriate indicator lamp will stop 
flashing. The COMAND system operation will resume 
(only vehicles with COMAND).
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