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 210 of 506
209 Controls in detail
Audio system
Radio operation
Selecting radio mode
Press b button.
Calling up wavebands
You can choose from among the FM, AM
and WB wavebands.
Weather band (
page 212).Calling up wavebands for radios without
SAT*
Press
FM or
AM soft key to switch be-
tween FM and AM.
The FM and AM wavebands are called
up one after another.
or
Press
WB soft key.
The weather band menu is called up.
The waveband currently selected
appears in the upper left-hand corner
of the display.Calling up wavebands for radios with
SAT*
Press
FM, AM or
WB soft key repeatedly
until desired waveband has been se-
lected.
The FM, AM and WB wavebands are
called up one after another.
The waveband currently selected
appears in the upper left-hand corner
of the display.
iFM waveband: 87.7......107.9 mHz
AM waveband: 530......1 710 kHz
Page 212 of 506

211 Controls in detail
Audio system
Scan search
Starting scan search
Select desired waveband.
Press
SC soft key.
SC will appear in the display. The
radio briefly tunes in all receivable
stations on the waveband selected.
Ending scan search
Press
SC soft key or S or T.
The station last played will be se-
lected and
SC disappears from the
display.Station memory
You can store ten AM and ten FM stations
in the memory.
Storing stations
Tune in desired station.
Press and hold desired station
button1 to R until a brief
signal tone is heard.
The frequency is stored on the se-
lected station button.
Calling up stations
Press desired station button1
to R briefly.Autostore – automatic station memory
The Autostore memory function provides
an additional memory level. The station
memory for manually stored stations is not
overwritten.
Calling up Autostore memory level and
storing stations
Press
AS soft key briefly.
The radio switches to the Autostore
memory level.
AS and
SEARCH
ap-
pear in the display and the radio
finds the ten stations with the
strongest signals. These stations
are stored on the station buttons
1 to R in order of signal
strength.
Page 213 of 506

212 Controls in detailAudio system
Calling up stations
Press desired station button1
to R.
Leaving the Autostore memory level
Press
FM or
AM
soft key briefly.
Interrupting radio mode
The radio mode is interrupted by an incom-
ing call on the telephone* (
page 229).
Mute on
Press U button.
The radio mode is interrupted and MUTED
appears in the display.
Mute off
Press U button.
The radio mode is again active.Weather band
Press
WB soft key.
The weather band station last received
is tuned in.
Selecting a weather band station
directly
Select desired weather band station
with buttons 1 to 7.
If a station cannot be tuned in, a search
is automatically started.
Search
Press S or T button to tune in
the next receivable weather band sta-
tion.Scan search
Starting scan search
Press
SC soft key.
SC will appear in the display. The ra-
dio briefly tunes in all receivable
weather band stations.
Ending scan search
Press
SC soft key or S or T.
The weather band station last
played will be selected and
SC dis-
appears from the display.
iIf no weather band station is received
after three consecutive scans of the
complete frequency range, then the
scan stops at the channel with which it
began and
NO WB FOUND
appears in the
display.
If this happens, switch back to stan-
dard radio mode.
Page 215 of 506

214 Controls in detailAudio systemCalling up the SAT main menu
Press
SAT
soft key.
SAT
is displayed in the upper left-hand
corner of the display.
Prior to activation of the satellite radio
service (
page 214).
After activation of satellite radio ser-
vice (
page 214).
Prior to activation of the satellite radio
service
The telephone number of the SIRIUS
Service Center (888-539-7474) is dis-
played.
Press
ESN
soft key.
The twelve-digit electronic serial num-
ber (ESN) of the SAT tuner* installed in
your vehicle is displayed.
This information is required to call the
SIRIUS Service Center for an activation re-
quest.
After activation of the satellite radio ser-
vice
The satellite radio main menu appears.
The radio station selected last is audible,
provided it can be received.The first channel 001 is called up and the
PTY system changes to All categories.
If no station can be received,
ACQUIRING
appears in the display.
If the Satellite radio service is not
activated,
ACQUIRING
will also appear in the
radio display and
NO SAT
will appear in the
multifunction display.
iCredit card information may also be re-
quired for your application.
The activation process takes approxi-
mately five to ten minutes after calling
the SIRIUS Service Center.
iThe system will tune to a default sta-
tion if no station had been selected pre-
viously.
Page 217 of 506

216 Controls in detailAudio systemTuning via the program category list
The category list contains all currently re-
ceivable categories of programs. It is
arranged alphabetically.
Selecting a category
Press
PTY
soft key.
The current PTY category of the sta-
tion is displayed.
Press
<<<
or
>>>
soft key.
This switches between the individu-
al categories.
When changing the category, the chan-
nel selected last in the new category
becomes audible.The system will automatically switch to
a station of the selected category if the
currently selected station is not of the
selected category. Otherwise, the cur-
rently selected station remains tuned.
Tuning a station within the selected
category
The channels identified for the current-
ly selected category are arranged
numerically. Only one entry is visible at
a time.
Press S or T button briefly.
The next station within the category
is started.
or
Press and hold S or T but-
ton for approx. three seconds until
desired station has been reached.Tuning via scan search
Scan search is characterized as follows:
Scan search plays a channel for ap-
prox. eight seconds and then skips to
the next channel within the current cat-
egory.
Scan search can be terminated manu-
ally.
Press
SC soft key.
The search starts.
SC appears in the
display.
Press
SC soft key again.
The search stops.
Page 218 of 506

217 Controls in detail
Audio system
Obtaining additional text information
Additional text information (artist, title) re-
lated to the current channel can be dis-
played.
Press
INF
soft key.
The title being played is displayed.
Press
INF
soft key again.
The name of the artist performing the
title being played is displayed.Storing stations
Tune in desired station.
Press and hold desired station button
1 to R until a brief signal tone is
heard.
The frequency is stored on the selected
station button.
The radio saves the current station at
the memory preset selected. The mem-
ory preset selected appears in the sta-
tus line, e.g. S3.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.
iIf a button is not pressed within
four seconds, the radio will return to
the standard display.
iThere are ten presets available.
An existing entry is overwritten in the
memory list when a new entry is given.
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.