Page 154 of 464

154 Controls in detailControl systemTEL menu*
You can use the functions in the
Tel
menu
to operate your telephone, provided it is
connected to a hands-free system and
switched on.
Switch on the telephone and Audio or
COMAND*.
Press buttonÿ orè on the
steering wheel repeatedly until you see
the
Tel
menu in the display.Which messages will appear in the display
field depends on whether your telephone is
switched on or off:
If the telephone is off, the message in
the multifunction display is:
Tel off
.
If the telephone is on:
The telephone will then search for a
network. During this time the display is
empty.
As soon as the telephone has found a
network,
READY
is indicated in the dis-
play.
1Signal strength
This standby message indicates that your
telephone is ready for use and you can op-
erate it using the control system.
Warning!
G
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 tele-
phone while driving, please use the
hands-free device and only use the tele-
phone when weather, road and traffic condi-
tions permit.
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of approximately
44 feet (approximately 13.5 m) every sec-
ond.
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and ⁄or
personal injury.
ProCarManuals.com
Page 183 of 464

183 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
Sound system
Your vehicle is equipped with a sound sys-
tem. The subwoofer is located between the
rear seats.
Warning!
G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a stand-
still 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 cover-
ing a distance of 50 feet (approximately
14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer*, satellite
radio*, telephone* and voice control sys-
tem* are interconnected. When one of the
components is not operational or has not
been removed/replaced properly, the func-
tion 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.
!Make sure no objects fall into the open-
ings of the subwoofer between the rear
seats.
If necessary, contact an authorized
Mercedes-Benz Center to remove any
objects which may have fallen into the
openings.
ProCarManuals.com
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
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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*.
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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.
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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.
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