Page 207 of 506

206 Controls in detailAudio systemSound system*
You can either program the sound settings
manually (
page 205) or choose settings
via preset sound characteristics.
You can select from among the following
settings:
STANDARD
: conventional stereo sound.
SURROUND
: the sound is set for better
three-dimensional acoustic character-
istics.
SPEECH
: the sound is optimized for the
spoken word.
Press O button repeatedly until STANDARD
, SURROUND
or
SPEECH
appears
in the display.
Press X or Y soft key repeatedly
until the desired sound setting has
been reached.
The sound is set accordingly.
or
Press
RES
soft key briefly.
The sound setting is reset depending
on the sound source activated.
Radio mode:
STANDARD
CD/AUX mode:
SURROUND
Telephone:
SPEECH
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.Returning sound functions to factory
settings
Press O button to call up settings
menu in the display.
Press
RES
soft key briefly; the respec-
tive sound function is reset to its center
level.
or
Press and hold
RES
soft key until
RESET
appears in the display.
The sound settings for bass and treble
are returned to their center level and
the volume is set to a predefined level.
Page 208 of 506

207 Controls in detail
Audio system
Vehicles with sound system*:
The sound setting is reset depending
on the sound source activated.
Radio mode:
STANDARD
CD/AUX mode:
SURROUND
Telephone:
SPEECH
The radio switches back to the stan-
dard radio menu four seconds after the
last soft key is pressed.
Adjusting volume distribution
Call up fader and balance functions by
pressing the P button.Fader
Press P button repeatedly until FADER
appears in the display.
Press V or W soft key.
The volume is distributed accordingly
between the front and rear of the vehi-
cle.
or
Press
RES
soft key briefly.
The fader is reset to its center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.Adjusting balance
Press P button repeatedly until BALANCE
appears in the display.
Press X or Y soft key.
The volume is distributed between the
left and right sides of the vehicle.
or
Press
RES
soft key briefly.
The balance is reset to its center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last button is pressed.
Page 209 of 506

208 Controls in detailAudio systemReturning volume distribution to facto-
ry settings
Press P button to call up settings
menu in the display.
Press
RES
soft key briefly; the respec-
tive volume distribution is reset to its
center (flat) level.
or
Press and hold
RES
soft key until
RESET
appears in the display.
The volume distribution settings for
fader and balance are set to their cen-
ter level.
The radio switches back to the stan-
dard radio menu four seconds after the
last soft key is pressed.Telephone* muting
If your vehicle equipment includes a
Mercedes-Benz specified mobile tele-
phone*, you can adjust its volume sepa-
rately from the volume of the audio system
while the telephone is being used.Connecting an external audio source
(AUX) to the radio*
An optional dealer-installed cinch-connec-
tor* for connecting an external audio
source may become available for your ve-
hicle model. Feature description is based
on preliminary information at time of print-
ing. Contact an authorized Mercedes-Benz
Center for availability.
You can adjust the volume (
page 205),
the sound settings (
page 205) and the
volume distribution (page 207) for the
AUX input.
Calling up AUX mode
Press and hold Q button until AUX
appears in the display.
Canceling AUX mode
Press any audio source button.
Page 219 of 506

218 Controls in detailAudio systemCD 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.
!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 220 of 506

219 Controls in detail
Audio system
Do not use CDs with an eight cm diameter,
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.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.!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.
Page 224 of 506

223 Controls in detail
Audio system
Fast forward/reverse
Fast forward
Press and hold S button until
desired point has been reached.
Reverse
Press and hold T button until
desired point has been reached.
Scan
Starting scan
Press
SC soft key.
SC will appear in the display.
Each track on the current CD will be
played for approx. eight seconds in
ascending order.
Ending scan
Press
SC soft key or T or S.Random play
The random function (RDM) plays the
tracks of the current CD in random order.
Switching on random
Press
RDM
soft key.
RDM
appears in the display. A ran-
domly selected track is played.
Switching off random
Press
RDM
soft key again.Repeat
The track being played is repeated until the
repeat function is switched off.
Switching on repeat
Press
RPT
soft key.
RPT
appears in the display.
Switching off repeat
Press
RPT
soft key again.
Pause function
The CD changer* mode is interrupted by
an incoming call on the telephone*
(
page 229).
iThe track number and the relative time
of the track is shown in the display dur-
ing the search.
iWhen you start the RDM function, the
RPT function is automatically switched
off.
iWhen you start the RPT function, the
RDM function is automatically
switched off.
Page 225 of 506

224 Controls in detailAudio system
Switching on pause function
Press U button.
The CD changer* mode is interrupt-
ed and
PAUSE
appears in the dis-
play.
Switching off pause function
Press U button.
The CD changer* mode is active
again.Track and time display
Press
T soft key.
The number of the track being played
and the elapsed playing time appear in
the display.
Press
T soft key again.
The total number of tracks and the total
playing time of the CD appear in the
display.
Press
T soft key.
The standard CD playback menu ap-
pears in the display.
GSM network phonesWarning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his /her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
1Observe all legal requirements.
Page 233 of 506

232 Controls in detailAudio system
Press
OK soft key after entering correct
code.
The telephone is unlocked. If you have
entered an incorrect code, you must
enter the correct code.
Switching off the telephone
Press h button for approx. three
seconds.PROCESSING
appears in the display until
the telephone is off. Afterward,
PHONE
OFF
appears in the display.
Adjusting the volume
Turn rotary control of N button dur-
ing a telephone call.
The volume will increase or decrease
depending on the direction turned.Adjusting sound
Adjust sound during a telephone call.
Sound adjustment (
page 205).
Placing a call
Entering a telephone number and
starting the dialing process
Enter desired telephone number using
buttons 1 to R.
The number can have up to 32 digits,
but only twelve of these are visible in
the display.
If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.
After correct telephone number has
been entered, press s button.
Phone book
The numbers stored in the phone book of
the mobile telephone can be called up ei-
ther by name or number.
In addition, incoming calls are stored in the
phone book.
iThe volume can be adjusted separately
for telephone mode and audio mode.
iIf the telephone number has been
saved together with a name in the
phone book, the name will appear in
the display.