Page 146 of 498

144 Controls in detailControl systemOperate the CD player
Turn on the radio and select the 
CD player (
page 227). Vehicles with 
COMAND*: Refer to separate 
operating instructions.
Press buttonè orÿ repeatedly 
until the settings for the CD currently 
being played appear in the multifunc-
tion display.
1Current CD (for CD changer*)
2Current track
Press buttonk orj repeatedly 
until the desired track is selected.
NAV* menu
The 
Nav
 menu contains the functions 
needed to operate your navigation system.
Press buttonè orÿ repeatedly 
until the message 
Nav
 appears in the 
multifunction display.
If the navigation system is switched off, 
the message 
Nav off
 appears in the 
multifunction display. 
If the navigation system is on, different 
messages, depending on the current 
state of the navigation system, appear 
in the multifunction display.
Please refer to the COMAND* manual for 
instructions on how to activate the route 
guidance system*.
iFor more information on satellite radio 
operation, see “Introduction to satellite 
radio* (USA only)” (
page 220). 
Vehicles with COMAND*: Refer to 
separate operating instructions.
iTo select a CD from the magazine, 
press a number on the audio system or 
the COMAND* system key pad located 
in the center dashboard. 
     
        
        Page 209 of 498

207 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help 
you become familiar with your 
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description 
of the user functions.
Operating safety
Warning!
G
In order to avoid distraction which could 
lead to an accident, the driver should enter 
system settings with the vehicle at a 
standstill and operate the system only when 
road and 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 44 feet 
(approximately 14 m) every second.
Warning!
G
Any alterations made to electronic 
components can cause malfunctions.
The radio, amplifier, CD changer*, satellite 
radio*, telephone* and voice control 
system* are interconnected. When one of 
the components is not operational or has 
not been removed/replaced properly, the 
function of other components may be 
impaired.
This condition might seriously impair the 
operating safety of your vehicle.
We recommend that you have any service 
work on electronic components carried out 
by an authorized Mercedes-Benz Center. 
     
        
        Page 211 of 498
209 Controls in detail
Audio system
Item
Page
1
CD changer mode selector
AUX mode selector
225
215
2
Single CD mode selector 
227
3
Radio mode selector
4
Mute function (radio)
219
Pause (CD)
231
5
Volume distribution
213
6
Sound settings
211
7
Display
8
Alphanumeric keypad
Item
Page
9
Speed dialing memory 
(telephone) in descending 
order
a
Accepting a call
(telephone)
237
b
Telephone mode selector
232
c
Speed dialing memory 
(telephone) in ascending 
order
233
d
Terminating a call
(telephone)
237
e
CD slot
f
CD ejection
227
Item
Page
g
Soft keys
210
h
Volume
211
j
Switching on/off
210
k
Manual tuning / seek 
tuning (radio)
217
Track search, reverse (CD)
230
l
Manual tuning / seek 
tuning (radio)
217
Track search,
fast forward (CD)
230 
     
        
        Page 227 of 498

225 Controls in detail
Audio system
Calling up the ESN information menu
Press 
INF
 soft key.
Press 
ESN
 soft key.
The twelve-digit electronic serial num-
ber (ESN) of the SAT tuner* installed in 
your vehicle is displayed.
Press 
RET
 soft key to exit the menu.
CD mode
Safety precautions
General notes
The system may not be able to play audio 
CDs with copy protection.
Playing copied CDs may cause 
malfunctions during playback.Warning!
G
The single CD player and the CD changer* 
are Class 1 laser products. There is a danger 
of invisible laser radiation if the housing is 
opened or damaged.
Do not open the housing. The single CD 
player and the CD changer* do not contain 
any parts that can be serviced by the user. 
For safety reasons, have any service work 
which may be necessary performed only by 
qualified personnel.
Warning!
G
In order to avoid distraction which could 
lead to an accident, the driver should insert 
CDs with the vehicle at a standstill and oper-
ate the audio system only if permitted by 
road, weather and traffic conditions.
Bear in mind that at a speed of just 30 mph 
(approximately 50 km/h), your car covers a 
distance of 44 feet (approximately 14 m) ev-
ery second. 
     
        
        Page 228 of 498

226 Controls in detailAudio system
D o  n o t  u s e  C D s  w i t h  a n  e i g h t  c m  d i a m e t e r ,  
not even with a CD adapter. Attempting to 
play CDs with an eight cm diameter or 
playing such CDs with an adapter may 
cause damage to the CD drive. Such dam-
age is not covered by the Mercedes-Benz 
Limited Warranty. 
Should excessively high or low tempera-
tures occur while in CD changer mode*, CD TEMP
 will appear in the display, and the 
CD will be muted until the temperature has 
reached an acceptable level for the system 
to continue operation.
The single CD player and the CD changer* 
play audio CDs.Tips on handling CDs
Handle CDs carefully to prevent inter-
ference during playback.
Avoid scratches, fingerprints and dust 
on the CDs.
Do not write on CDs or apply any labels 
or other material to them.
Clean CDs from time to time with a 
commercially available cleaning cloth. 
Never wipe the CD in a circular motion; 
instead, wipe it in a straight line start-
ing in the center and moving outward. 
Do not use solvents, anti-static sprays, 
etc. for cleaning.
Replace the CD in its case after use.
Protect CDs from heat and direct sun-
light.
!If you affix stickers to the CDs, they can 
become warped due to the heat that 
develops in the CD drive or CD chang-
er.
In certain situations, the CDs can then 
no longer be ejected and cause dam-
age to the drive. Such damage is not 
covered by the Mercedes-Benz Limited 
Warranty.!Your CD drive or CD changer has been 
designed to play CDs which corre-
spond to the EN 60908 standard. You 
can therefore only use CDs with a max-
imum thickness of 1.3 mm.
If you insert thicker data carriers, e.g. 
ones that have data on both sides (one 
side with DVD data, the other side with 
audio data), they cannot be ejected and 
will damage the drive. 
     
        
        Page 229 of 498

227 Controls in detail
Audio system
Operating the single CD player in the 
audio system unit
Loading a CD
The single CD player in the audio system 
unit has capacity for one CD. The CD slot 
for loading the drive is located underneath 
the soft keys.
Make sure the system is switched on.
Insert CD into CD slot. The label side of 
the CD must face upwards.
The system automatically pulls the CD 
into the CD slot. The audio CD begins 
to play.Ejecting a CD
Make sure the system is switched on.
Press EJECTbutton.
The system ejects the CD. 
NO CD
 will 
appear in the display.
Remove CD from slot.Operational readiness of CD changer*
If a CD changer* has been installed in the 
vehicle, it can be operated from the front 
control panel of the audio system. A load-
ed magazine must be installed to play CDs.
The CD changer is located in the glove box.
Loading/unloading the CD magazine
Slide changer door to the right and 
press gbutton.
Magazine will be ejected.
!If a CD is already loaded, it must be 
ejected before inserting a new CD. In-
serting a second CD in the slot with an-
other CD still loaded will cause damage 
to the CD drive not covered by the 
Mercedes-Benz Limited Warranty. 
iIf a CD has been inserted incorrectly or 
cannot be read, 
WRONG CD0
 will appear 
in the display.
iIf you do not take the CD out of the CD 
slot within approx. 15 seconds, the sys-
tem automatically pulls the CD back in 
and plays it.
If a CD is pulled back in, press 
EJECTbutton for five seconds; the CD 
will then be ejected.
iThe CD changer* may not be able to 
play audio CDs with copy protection. 
     
        
        Page 230 of 498
228 Controls in detailAudio system1CD
2CD changer
3CD tray
4CD magazine
Remove magazine4 and pull 
CD tray3 fully out.
Place CD1 i n  r e c e s s  o f  t r a y ,  l a b e l  s i d e  
up.
Push tray into magazine in direction of 
arrow.
Pus h ma ga zine  i nt o CD c hang er*2 in 
direction of arrow and close sliding 
door.
Playing CDs
Single CD player in the audio unit
Pressi button.CD 0
 will appear in the upper left-hand 
corner of the display.
The CD will resume playback at the point 
where it was switched off.CD changer*
Press Q button.CD and the selected magazine slot num-
ber appear in the upper left-hand cor-
ner of the display.
If you have not removed a CD since the last 
time the CD audio source was activated, 
the last CD listened to will begin to play at 
the point where it was switched off.
After the last track on a CD has finished, 
the next CD is automatically played.
iCDs which have been inserted improp-
erly or are unreadable will not be 
played. 
     
        
        Page 231 of 498
229 Controls in detail
Audio system
Playing tracks
You have the following options:
Audio system with CD changer*: se-
lecting CDs
Direct track entry
Track skip forward/reverse
Fast forward/reverse
Scan
Random tracks
Repeat trackSelecting CDs in the audio unit with CD 
changer*
You can select from among the 
inserted CDs with buttons 
Rto6.
R = CD player in the audio unit 
1to6 = CDs in the 
CD changer*
The magazine slot number of the se-
lected CD appears next to 
CD in the dis-
play, and the number of the currently 
played track appears next to TRACK
.Direct track entry
You can make a direct selection from 
among the tracks on a CD.
Press * button.
Enter track number using buttons 1 
to R.iIf there is no CD in the selected maga-
zine slot, 
NO CD
 appears in the display 
with the corresponding slot number.