
:Current fuel consumption;Estimated remaining driving range
Digital speedometer
XPress button = or ; to select the
Trip menu.
XPress button : or 9 to select the
digital speedometer.
Navi menu
The Navi menu contains the functions
needed to operate your navigation system.
XPress button = or ; to select the
Navi menu.
The message shown in the multifunction
display depends on the status of the
navigation system:
RWith the COMAND system switched on
or off and route guidance not activated,
the direction of travel and, if applicable,
the name of the street currently traveled
on appear in the multifunction display.
RWith the COMAND system switched on
and route guidance activated, maneuver
instructions appear in the multifunction
display.
Please refer to separate COMAND system
operating instructions for instructions on how
to activate the route guidance system.
Audio menu
The functions in the Audio menu operate the
audio equipment which you have currently
switched on.
The following functions are available:
RSelecting radio station (Y page 115)
ROperating audio devices/audio media
(Y page 116)
ROperating video DVD (Y page 116)
If the audio system or the COMAND system
is currently switched off, the message Audio
Off appears in the multifunction display.
XTo adjust the volume: Press button
W or X on the multifunction steering
wheel.
Selecting radio station
iThe SIRIUS XM Satellite Radio is treated
as a radio application.
Additional optional satellite radio
equipment and a subscription to a satellite
radio service provider are required for
satellite radio operation. Contact an
authorized Mercedes-Benz Center for
details and availability for your vehicle.
For more information on satellite radio
operation, see “Satellite radio”
(Y page 140).
Vehicles with COMAND system:
Refer to separate COMAND system
operating instructions.
XSwitch on the audio system (Y page 132)
and select radio mode.
Vehicles with COMAND system:
Refer to separate COMAND system
operating instructions.
XPress button = or ; to select the
Audio menu.
The currently tuned station appears in the
multifunction display.
Control system115Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 115Z

Example illustration for FM radio
:Stored memory position;Station frequency=Wave band settingXSelecting next or previous stored
station: Press button : or 9 briefly
to select a stored station.
XSelecting next or previous station in
wave band: Press and hold button : or
9 to select a station.
You can only store new stations using the
corresponding feature on the radio
(Y page 139).
Vehicles with COMAND system:
Refer to separate COMAND system operating
instructions.
You can also operate the radio in the usual
manner.
Operating audio devices/audio media
XSwitch on the audio system and select the
CD or MP3 mode (Y page 146).
Vehicles with COMAND system:
Refer to separate COMAND system
operating instructions.
XPress button = or ; to select the
Audio menu. The settings for the currently
being played audio device/audio media
appear in the multifunction display.
Example illustration
:Disc number;Current trackXSelecting next or previous track: Press
button : or 9 briefly.
XSelecting a track from the track list
(quick search): Press and hold
button : or 9.
The current track does not appear during
Audio AUX mode operation.
Operating video DVD
This function is only available if your vehicle
is equipped with the COMAND system.
XSwitch on the COMAND system and select
DVD-Video. Refer to separate COMAND
system operating instructions.
XPress button = or ; to select the
Audio menu.
:Disc number;Current sceneXSelecting next or previous scene: Press
button : or 9 briefly.
XSelecting a scene from the scene list
(quick search): Press and hold
button : or 9.
116Control systemControls in detail
X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 116

Tel menuGWarning!
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
recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the
telephone while driving, please use the hands-
free device and only use the telephone when
weather, road and traffic conditions permit.
Some jurisdictions prohibit the driver from
using a mobile phone 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.
You can connect your telephone to the audio
system (Y page 155) or to the COMAND
system via Bluetooth®, see separate
COMAND system operating instructions.
XSwitch on the audio system (Y page 132)
or the COMAND system, see separate
COMAND system operating instructions.
XPress button = or ; to select the
Tel menu.
One of the following messages will appear
in the multifunction display:
RNo Service: No network is available.
RReady for Bluetooth Telephony...:
The telephone has not been connected
to the audio system or COMAND system
via Bluetooth® yet.
XConnect the telephone to the audio
system or COMAND system via
Bluetooth®.
RPhone READY or name of the network
provider (if available): The telephone has
found a network and is ready for use. You
can operate it using the control system.
Answering a call
When your telephone is ready to receive calls,
you can answer a call at any time. In the
multifunction display you will then see the
following message:
Example illustration
XPress button 6.
You have answered the call.
The caller’s number appears only if it is
transmitted.
The caller’s name appears only if the number
and the name are stored in the phone book.
Ending a call or rejecting an incoming
call
XPress button ~.
Dialing a number from the phone book
When your telephone is ready to receive calls,
you may select and dial a number from the
phone book at any time.
iTo use the phone book of the audio
system you can import business cards
(vCards) from external Bluetooth® phones
into your audio system’s phone book
(Y page 162). Vehicles with COMAND, see
separate operating instructions.
XPress button = or ; to select the
Tel menu.
XPress button : or 9 or a to
switch to the phone book.
The stored names are displayed in
ascending alphabetical order.
XPress button : or 9 to select the
desired entry.
Control system117Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 117Z

not fold out when you switch on the ignition.
You will then have to fold out the exterior rear
view mirrors using the button on the door
control panel (Y page 85).
Make sure both exterior rear view mirrors are
folded out completely before driving off.
XPress button = or ; to select the
Settings menu.
XPress button : or 9 to select the
Convenience submenu.
XPress a.XPress button : or 9 to select the
Fold Mirrors in when Locking:
function.
The current setting Enabled or Disabled
is shown.
XPress button a to change the current
status.
Depending on the previous status, the
automatic fold-in function for exterior rear
view mirrors will be Enabled or Disabled.
Audio system
Audio and telephone operation
These instructions are intended to help you
become familiar with your Mercedes-Benz
audio system. They contain useful tips and a
detailed description of the user functions.
GWarning!
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 vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
Audio system overview
Item:Audio display (Y page 128);Audio control unit (Y page 126)Audio system125Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 125Z

Item=Clear button (Y page 130)?Audio controller ( Y page 129)ABack button ( Y page 129)
Operating safety
GWarning!
Any alterations made to electronic
components can cause malfunctions.
The radio, amplifier, CD changer, satellite
radio, and telephone 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 at
an authorized Mercedes-Benz Center.
Audio system components
With the audio system you can operate the
following main functions:
R Audio function with the radio, Satellite
radio, disc (CD audio or MP3 mode) and
Audio AUX
R the mobile phone with the phone book
R various system settings
The audio system consists of the following:
R Audio control unit
R Audio display
R Audio controller with buttons k and
2
In addition, the audio system can also be
operated with the multifunction steering
wheel ( Y page 110).
In these instructions, the keypad (right side
of audio control unit) and the function buttons
are referred to as “buttons”.
Audio control unit
With the audio control unit you can
R switch the audio system on/off
R adjust the volume
R select the operating modes
R enter telephone numbers and accept,
reject, initiate and end telephone calls
R load and eject CDs
126Audio systemControls in detail
X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 126

Audio control unit overviewItem:Switching to radio mode
(Y page 137)
Calling up wave bands
(Y page 137)
Switching on Sat mode
(Y page 142)
;Switching to CD audio or MP3 mode
(Y page 146)
=Disc slot?Load/eject button (Y page 149)AClear button for deleting digits or
entire entries (Y page 166)
Entering a passcode (Y page 159)
Entering a telephone number
(Y page 165)
BKeypad
Tuning to a station via the station
memory (Y page 138)
Storing stations manually
(Y page 139)
Entering a passcode (Y page 159)
Entering a phone number
(Y page 165)
Sending DTMF tones (Y page 168)
CD changer: Selecting a CD
(Y page 150)
CD: Entering a track number directly
(Y page 152)
CTuning to a station via station search
(Y page 138)
Fast forward (Y page 153)
Skipping forwards to a track
(Y page 153)
DSwitching audio system on/off
(Y page 132)
EAdjusting the volume (Y page 133)Audio system127Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 127Z

FTuning to a station via station search
(Y page 138)
Fast rewind (Y page 153)
Skipping backwards to a track
(Y page 153)
GConfirming a passcode
(Y page 159)
Accepting a call (Y page 167)
Initiating a call (Y page 165)
Redial (Y page 166)
HRejecting a call (Y page 167)
Ending an active call (Y page 167)
IOpening system settings menu
(Y page 135)
JSwitching sound on/off
(Y page 133)
Switching hands-free microphone
on/off (Y page 167)
KSwitching to telephone mode
(Y page 155)
LSound settings (Y page 133)
Audio display
! Avoid touching the audio display at all
times. The display has a very sensitive high-
gloss surface, there is a risk of it being
scratched. Do not press directly in the
display face. Otherwise, the audio display
will be damaged.
iFor information about cleaning and care
of the audio display, see “Audio or
COMAND display” (Y page 256).
Display
The currently selected mode and the
associated menus are shown on the audio
display. The audio display is divided into
several areas.
Example illustration: Radio selected
Status line = displays the time and the
current settings for radio and telephone
mode.
You can request the required function using
menu bar :.
The selection is made using the audio
controller.
Mobile phone readiness is indicated by
additional information being shown in the
status line:
RIn the telephone main menu: Name of the
Bluetooth® device (calls made and
received via the Bluetooth® interface)
(Y page 160).
RMobile phone network signal strength
r. This information will only be shown
with suitable mobile phones.
RThe receiver symbol indicates whether a
call is active or not.
¢ No active call
ö Active call
In this example, the audio main function is set
to the FM radio mode and main area ; is
active.
iThe layout of the menus may vary
depending on your vehicle’s equipment.
This manual shows the menus for a fully
equipped vehicle.
Instrument cluster multifunction
display
Please refer to the “Control system” section
of this manual (Y page 110) for function
descriptions and operation of the instrument
cluster multifunction display and
128Audio systemControls in detail
X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 128

multifunction steering wheel buttons as they
relate to audio functions described in this
section.
Audio controller
The menu functions are selected on the audio
display using audio controller :. For this
purpose, a selected item is highlighted.
In this way, you can open menus or lists, move
within menus or lists, and quit menus or lists.
Operating audio controller
Audio controller : features the following
options:
Rpress briefly or press and hold W
Rrotate to the left or right cVd
Rslide to the left or right XVY
Rslide up or down ZVÆ
SymbolHow to use the audio
controller
WXPress briefly
Rto confirm the selection of a
menu item or list entry
XPress and hold until the
selected action has been
carried out
Rto save a station
cVdXRotate
Rto move through vertical or
horizontal menus or through
lists
Rto select program settings
ZVÆXSlide
Rto move through vertical
menus or lists
Rto exit horizontal menus
XVYXSlide
Rto move through horizontal
menus
Rto exit vertical menus
XSlide and hold
Rfor fast forward or reverse for
audio CD playback
Back button
Audio system129Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 129Z