Page 185 of 464
185 Controls in detail
Audio system
Item
Page
1
CD mode selector
199
2
Manual tuning
(radio)
189
Fast forward/reverse
(cassette, CD)
198,
202
Speed dialing memory
(telephone*)
207
3
Radio mode selector
189
4
Display panelCassette compartment
behind display panel
Item
Page
5
Alpha-numeric keypadBand selection,
station buttons (radio)
189
CD selection (CD)
201
Telephone number entry,
retrieving speed dialing
memory (telephone)
204
6
Scanning (radio, cassette,
CD)
191,
198,
202
7
Function button
190
8
Light-emitting diode
Item
Page
9
Function keys
a
Cassette eject
197
b
Cassette mode selector
196
c
Telephone* mode selector
203
d
Seek tuning (radio)
190
Track search (cassette,
CD)
197,
202
Speed dialing memory
(telephone)
207
e
On/off
186
Volume
186
ProCarManuals.com
Page 186 of 464

186 Controls in detailAudio systemButton and soft key operation
In these instructions, the alpha-numeric
keypad (right side of radio panel) and the
function buttons (left side of radio panel)
are referred to as “buttons”. The four keys
below the display panel are referred to as
“soft keys”.
Operation
Switching on/off
Switching on:
Turn SmartKey in starter switch to
position1 or2.
or
Turn control knoba.
Switching off:
Remove SmartKey from starter switch.
or
Turn control knoba.Adjusting the volume
Turn control knoba.
The volume will increase or decrease
depending on the direction turned.
Adjusting audio functions
Press the AUD key to call up the bass, tre-
ble, balance and fader functions in the var-
ious operating modes. Settings for bass
and treble are stored separately for the AM
and FM frequency bands, satellite radio
(SAT) mode, cassette mode and CD mode.
!Do not press directly on the display
face. Otherwise, the display will be
damaged.
iIf the radio is switched on without the
SmartKey in the starter switch, it will
automatically switch off again after ap-
prox. 30 minutes.
iThe volume setting can be selected
separately for the telephone*, audio
system and voice control system*.
ProCarManuals.com
Page 187 of 464
187 Controls in detail
Audio system
Bass
Regardless of operating mode, press
the
AUD
key repeatedly until
BASS
appears on the display.
Press
+ or
- key to increase or de-
crease level.
or
Press both
+ and
- keys simultaneously
to reset the Bass to its center (flat) lev-
el.Treble
Regardless of operating mode, press
the
AUD
key repeatedly until
TREBLE
appears on the display.
Press
+ or
- key to increase or
decrease level.
or
Press both
+ and
- keys simultaneously
to reset the Treble to its center (flat)
level.Fader
Regardless of operating mode, press
the
AUD
key repeatedly until
FADER
appears on the display.
Press
F or
R key to shift sound accord-
ingly to the front or rear speakers.
or
Press both
F and
R keys simultaneously
to reset the Fader to its center level.
iYour vehicle may or may not have the
fader function, depending on the
vehicle equipment and model.
ProCarManuals.com
Page 188 of 464
188 Controls in detailAudio systemBalance
Regardless of operating mode, press
the
AUD
key repeatedly until
BALANCE
appears on the display.
Press
L or
R key to shift sound accord-
ingly to the left or right speakers.
or
Press both
L and
R keys simultaneously
to reset the Balance to its center level.Returning audio functions to factory
settings
Regardless of operating mode, press
and hold
AUD
key longer than two
seconds.
RESET
will appear on the
display.
All settings for bass, treble and balance
are returned to the center level and the
volume is set to a predefined level.Audio system sound selection (EXT)*
Regardless of operating mode, press
the
AUD
key.
The sound settings menu appears on
the display.
Press the
EXT
key.
Press one of the function keys.
ProCarManuals.com
Page 189 of 464

189 Controls in detail
Audio system
You can select from among the
following settings:
DRV
: The tone level is set to the
Driver position; sound is directed
toward the passengers.
SP: The tone level is set for Speech,
optimizing the sound for the spoken
word.
AMB
: The tone level is set for
Ambience, producing a
three-dimensional sound.
OFF
: The audio system sound
selection is turned off.
Telephone* muting
If a telephone has been installed in the
vehicle, the radio will switch to telephone
mode when a call is incoming. The current
audio source is muted.
Radio operation
Selecting radio mode
Pressb button.
You can now receive radio stations
over the analog FM, AM or WB station
frequencies or you can receive chan-
nels digitally via satellite radio (SAT)*.
Analog station frequencies
Selecting the band
You can select from among FM, AM or WB
frequency bands.
Weather band (
see page 192).
Press FM, AM or WB key repeatedly un-
til desired band has been selected.
The FM, AM and WB frequency bands
are called up one after the other.
The frequency band currently selected
appears in the upper left-hand corner
of the display.
Selecting a station
The following options are available for
selecting a station:
Direct frequency band input
(page 190)
Manual tuning (
page 190)
Automatic seek tuning (
page 190)
Scan tuning (
page 191)
Preset buttons (
page 191)
Automatic station memory (Autostore)
(page 191)
iFM frequency band:
FM 87.7......107.9 MHz
AM frequency band:
MW (medium wave) 530......1710 KHz
ProCarManuals.com
Page 190 of 464
190 Controls in detailAudio systemDirect frequency input
Select the desired frequency band.
Press“ button.
Enter desired frequency using
buttons4 toM.Manual tuning
Select the desired frequency band.
Press and hold either thed orc
button until the desired frequency is
reached.
Step-by-step station tuning takes place
in ascending or descending order of
frequency. The first three tuning steps
will take place without muting. After-
wards, the radio will be muted and
highspeed tuning will take place until
the button is released.Automatic seek tuning
Select the desired frequency band.
Press either thef ore button.
The radio will tune to the next higher or
next lower receivable frequency.
iYou can only enter frequencies within
the respective waveband.
If a button is not pressed within four
seconds, the radio will return to the
station last tuned to.
ProCarManuals.com
Page 191 of 464

191 Controls in detail
Audio system
Scan tuning
Starting scan tuning
Select desired frequency band.
Press2 button.SC will appear on the display. The
radio briefly tunes in all receivable
stations on the band selected. The
first scan cycle will tune in only the
stations with a strong signal. The
second scan cycle will tune in every
receivable station.
Ending scan tuning
Press2 button ord, c,
f ore button.SC disappears from the display.Manual station memory (Presets)
You can store ten AM and ten FM stations.
Storing stations
Tune in the desired station.
Press and hold desired station
button4 toM until a brief
signal tone is heard.
The frequency is stored on the
selected station button.
The frequency band and station
button number are shown in the up-
per left-hand corner of the display.
Retrieving a station from memory
Press desired station button4
toM.Automatic station memory (Autostore)
The Autostore memory function provides
an additional memory level. The station
memory for manually stored stations is not
overwritten.
Calling up Autostore memory level
Briefly press the
AS key.
AS is highlighted in the display.
The radio finds the ten stations with
the strongest signals. These
stations are stored on the station
buttons4 toM in order of
signal strength.
Retrieving a station from memory
Press desired station button4
toM.
Leaving the Autostore memory level
Press the
AS key.
The highlighted
AS in the display
disappears.
ProCarManuals.com
Page 192 of 464

192 Controls in detailAudio systemWeather band
Press the
WB key.
The weather band station last selected
is tuned in.
Select the desired weather band
station with buttons4 to7.
If a station cannot be tuned in, a scan
is automatically started.
Pressf ore button. The next
receivable weather band station is
tuned in.
Satellite radio (SAT)* (USA only)Sirius Satellite Radio provides 100 chan-
nels of digital-quality radio, among others
music, sports, news, and entertainment,
free of commercials. Sirius Satellite Radio
uses a fleet of high-power satellites to
broadcast 24 hours per day
coast-to-coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee.
For more information, call the Sirius ser-
vice or contact www.siriusradio.com
Program categories
The channels are categorized. The catego-
ries allow you to tune to stations broad-
casting a certain type of program
(PTY mode) (
page 195).
iAdditional optional satellite radio
equipment and a subscription to satel-
lite radio service provider is required
for the satellite radio operation de-
scribed here. Feature description is
based on preliminary information avail-
able at time of printing.
At time of printing, no date for availabil-
ity of optional equipment required for
satellite radio operation had been set.
Contact your authorized
Mercedes-Benz Center for details and
availability for your vehicle.
Satellite radio service may be unavail-
able or interrupted from time to time
for a variety of reasons, such as envi-
ronmental or topographic conditions
and other things we can't control. Ser-
vice might also not be available in cer-
tain places (e.g., in tunnels, parking
garages, or within or next to buildings)
or near other technologies.
ProCarManuals.com