
XTo activate/deactivate: press button :.
If indicator lamp ; is lit, the rear-
compartment functions are deactivated.
The rear side windows can then only be
operated using the switches on the driver's
door. If indicator lamp ; is off, the
functions are enabled. The rear side
windows can be operated using the
switches in the rear compartment.
Panic alarm
X To activate: press ! button : for at
least one second.
An alarm sounds and the exterior lighting
flashes.XTo deactivate: press ! button :
again.
or
XInsert the SmartKey into the ignition lock.
or
XPress the KEYLESS-GO Start/Stop button.The KEYLESS-GO key must be in the
vehicle.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
The product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
i Canada only:
This device complies with RSS-Gen of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
The product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
Driving safety systems
Driving safety systems overview
In this section, you will find information about
the following driving safety systems:
R ABS ( Anti-lock Braking System)
R BAS ( Brake Assist System)
R BAS PLUS ( Brake Assist System Plus*)
R ESP ®
(E lectronic Stability Program)
R EBD ( Electronic Brake force Distribution)
68Driving safety systemsSafety

Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The Product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
i Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The Product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
Locking and unlocking centrally
The SmartKey centrally locks/unlocks:
R the doors
R the trunk lid
R the fuel filler flap
:& Locks the vehicle;F Unlocks the trunk lid=% Unlocks the vehicle
When unlocking, the turn signals flash once.
When locking, they flash three times.
When it is dark, the surround lighting also
comes on if it is activated in COMAND
( Y page 264).
If you activate the acoustic locking
confirmation function, you will hear the
following, depending on the date of
production of the vehicle:
R an acoustic signal when locking
or
R one acoustic signal when unlocking and
three when locking.
The audible signal can be activated and
deactivated using the on-board computer
( Y page 386).XTo unlock centrally: press the %
button.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the theft deterrent locking system is armed
again.
XTo lock centrally: press the & button.
KEYLESS-GO
General notes
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The Product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
i Canada only:
SmartKey79Opening/closingZ

iIf the battery voltage is too low, the seat
heating may switch off.
The system automatically switches down
from level 3 to level 2 after approximately
eight minutes.
The system automatically switches down
from level 2 to level 1 after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
XMake sure that the SmartKey is in position
2 in the ignition lock.XTo switch on: press button : repeatedly
until the desired heating level is set.XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat heating
The seat heating has switched itself off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
i If the battery voltage is too low, the seat
ventilation may switch off.XMake sure that the SmartKey is in position
2 in the ignition lock.XTo switch on: press button : repeatedly
until the desired ventilation level is set.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature ( Y page 93). The seat
ventilation of the driver's seat
automatically switches to the highest level.
XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation
The seat ventilation has switched off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Steering wheel
Important safety notes
GWARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
Steering wheel109Seats, steering wheel and mirrorsZ

XMake sure that the SmartKey is in position
1 or 2 in the ignition lock.XPress button ; for the right-hand exterior
mirror or button = for the left-hand
exterior mirror.
The indicator lamp lights up in the button
that has been pressed.XPress adjustment button : up, down, to
the right or to the left until the exterior
mirror is set to a position that provides you
with a good overview of traffic conditions.
Folding the exterior mirrors in or out
electrically
XMake sure that the SmartKey is in position
1 or 2 in the ignition lock.XBriefly press button :.
Both exterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while the vehicle is
in motion, as they may otherwise vibrate.
Folding the exterior mirrors in or out
automatically
When the "Automatic mirror folding" function
is activated in COMAND ( Y page 262):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the
outside.
R the exterior mirrors fold out again
automatically as soon as you unlock the
vehicle and then open the driver's or front-
passenger door.
i The mirrors do not fold out if they have
been folded in manually.
Exterior mirror out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XPress the mirror-folding button
( Y page 112) repeatedly until you hear the
mirrors engage in position.
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
( Y page 111).
Automatic anti-glare mirrors
GWARNING
If incident light from headlamps is prevented
from striking the sensor in the rear-view
mirror, for instance, by luggage piled too high
in the vehicle, the mirror's automatic anti-
glare function will not operate.
Incident light could then blind you. This may
distract you from the traffic conditions and,
as a result, you may cause an accident.
The rear-view mirror and the exterior mirror
on the driver's side automatically go into anti-
glare mode if the ignition is switched on and
incident light from headlamps strikes the
sensor in the rear-view mirror.
The mirrors do not go into anti-glare mode if
reverse gear is engaged or the interior lighting
is switched on.
112MirrorsSeats, steering wheel and mirrors

NaviAudioTelephoneVideoVehicleModeFM/AM radioVideo DVDECOMap orientationSat radioAUXMulticontour
seat/lumbar
settingsPoint of interest
symbols on the mapDiscVideo offRear window
blindTraffic symbols on the
mapMemory cardEASY-ENTRY/
EXIT systemText information on
mapMUSIC
REGISTERExterior
lighting
delayed
switch-offO Topographical
mapMedia
InterfaceInterior
lighting
delayed
switch-offO City viewUSBAmbient
lightingO Freeway
informationRearO Automatic
mirror fold-in
functionO Volume reductionAUXO Locator
lightingSIRIUS serviceAudio offO Automatic
lockingMap versionO Interior
motion sensorO Tow-away
alarmO Trunk lid
opening height
restrictionSPLITVIEW
SPLITVIEW allows you to simultaneously use
different COMAND functions on the front-
passenger side and on the driver's side.
Depending on the viewing angle of the display
(from the driver's seat or from the front-
passenger seat), you will see two different
displays.122At a glanceCOMAND

switch SPLITVIEW on and off
( Y page 125).
The SPLITVIEW screen remains on for
approximately 30 minutes after the SmartKey
has been turned to position 0 in the ignition
lock. After this time or after the SmartKey has
been removed, the settings on the front-
passenger side are saved for approximately
30 minutes longer. After this period,
reactivation on the front-passenger side
means that the settings from the driver's side
will be used.
Cordless headphones for the front
passenger
There are different cordless headphones for
the front passenger and the rear
compartment.
The cordless headphones for the front
passenger can be identified by SPLITVIEW
symbol : on the headband.
The cordless headphones for the front
passenger cannot be used in the rear
compartment. Equally, the headphones for
the rear compartment cannot be used by the
front passenger.
Swiveling the COMAND display and
setting the brightness
You can swivel the COMAND display 5
. The
buttons are located beside the COMAND
display.
Swiveling:To swivel the display to the left;To swivel the display to the right
Setting the brightness
:Brightness of the instrument cluster
lighting;Brightness of the COMAND display
Brighter or dimmer:
XTurn control : or ; clockwise or counter-
clockwise.
i If Night View Assist Plus is activated, only
the brightness of the multifunction display
is adjusted with control :.
Display design
When the default settings are selected, the
display automatically switches between day
design and night design.
You can change these settings using
COMAND ( Y page 143).
5
Not with SPLITVIEW.124At a glanceCOMAND

Cleaning instructions
! Do not touch the COMAND display. The
display has a very sensitive high-gloss
surface; there is a risk of scratching. If you
have to clean the screen, however, use a
mild cleaning agent and a soft, lint-free
cloth.
The display must be switched off and have
cooled down before you start cleaning. Clean
the display screen, when necessary, with a
commercially available microfiber cloth and
cleaning agent for TFT/LCD displays. Then,
dry the surface with a dry microfiber cloth.
Avoid using alcoholic thinners, gasoline or
abrasive cleaning agents. These could
damage the display surface. Do not apply
pressure to the display surface when cleaning
it, as this could cause irreversible damage.
Remote control
Overview
You can use the remote control to operate the
COMAND display, SPLITVIEW and either one
of the rear-compartment screens.
:To switch the screen on/off (Rear Seat
Entertainment System only);To switch the button lighting on/off=To select the screen for remote control
operation ( COMAND, SPLITVIEW , L
REAR and REAR R can be selected)?To select a menu or menu itemATo confirm a selection or settingBMuteCTo adjust the volume (for corded
headphones only)DCOMAND: to set the station, skip track,
fast forward/rewind, for example. Rear
Seat Entertainment System: skip track,
fast forward/rewindAt a glance125COMANDZ

ECOMAND: to select a station from
presets, select a track, enter directly,
enter a phone number, for example. Rear
Seat Entertainment System: to select a
track, enter directlyFTo exit a menu (back)XPoint the remote control at the
corresponding screen and execute the
functions by pressing the corresponding
buttons.
i The remote control's function may be
restricted depending on the angle at which
it is pointed at the respective screen.
Selecting the screen for the remote
control
XTurn thumbwheel = until the desired
display is highlighted in the window.
Switching the screen on/off (Rear Seat
Entertainment System only)
If the SmartKey is in the ignition lock in
position 0 or 1 or if the SmartKey is not in the
ignition lock, the rear screens will switch off
after 30 minutes. Before the screens switch
off, they show a message to this effect.
You can switch the screens back on.
However, this will discharge the starter
battery.
XPoint the remote control at the rear-
compartment screen which has been
selected for remote operation.XPress button : on the remote control.
The respective rear screen switches on or
off.
i You can only switch the screens on using
the remote control if the ignition is
switched on.
Switching the button lighting on/off
XPress button ; on the remote control.
Depending on the previous status, the
button lighting is switched on or off.i If you do not use the remote control for
about 15 seconds, the button lighting
switches off automatically.
MuteXPress button B on the remote control.
The sound is switched on/off.
Adjusting the volume
This function is available for SPLITVIEW and
for the Rear Seat Entertainment System in
conjunction with corded headphones.
XPress one of buttons C on the remote
control.
The volume of the currently selected audio
or video source changes.
For COMAND, you can also adjust the
volume for phone calls and navigation
messages.
Selecting a menu/menu item and
confirming your selection
XPress the =;9: buttons to
select the menu/menu item and press the
9 button to confirm.126At a glanceCOMAND