GWarning!
Only drive with the doors closed. Otherwise,
one or more of the doors could open while the
vehicle is in motion, putting you and/or
others at risk.
GWarning!
Make sure the trunk is closed when the engine
is running and while driving. Among other
dangers, deadly carbon monoxide (CO) gases
may enter vehicle interior resulting in
unconsciousness and death.
XPower closing assist for doors: Press the
doors gently past the initial engage position
into the lock.
XPower closing assist for trunk lid: Press
the trunk lid gently into its lock.
Starter switch positions
SmartKey
GObserve Safety notes, see page 56.
Starter switch
gFor removing SmartKey1Power supply for some electrical
consumers, e.g. wipers
2Ignition (power supply for all electrical
consumers) and driving position
3Starting position
When you switch on the ignition, all lamps in
the instrument cluster come on. The high-
beam headlamp indicator lamp and turn
signal indicator lamps will only come on if
activated. If a lamp in the instrument cluster
fails to come on when the ignition is switched
on, have it checked and replaced if necessary.
If a lamp in the instrument cluster remains on
after starting the engine or comes on while
driving, refer to “Lamps in instrument cluster”
(Y page 489).
XAlways remove the SmartKey from the
starter switch when the engine is not in
operation.
This will help to prevent accelerated vehicle
battery discharge or a completely
discharged vehicle battery.
If the SmartKey cannot be turned in the
starter switch, the vehicle battery may not be
sufficiently charged.
XCheck the vehicle battery and charge it if
necessary (Y page 514).
or
XGet a jump start (Y page 514).
iIf the SmartKey does not belong to the
vehicle, the SmartKey can be turned in the
starter switch. However, the ignition does
not switch on and the engine does not start.
KEYLESS-GO
GObserve Safety notes, see page 56.
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a
removable KEYLESS-GO start/stop button.
The KEYLESS-GO start/stop button must be
inserted in the starter switch and the
SmartKey present in the vehicle.
Pressing the KEYLESS-GO start/stop button
without depressing the brake pedal
corresponds to the various starter switch
positions (Y page 284).
Pressing the KEYLESS-GO start/stop button
with the brake pedal firmly depressed will
start the engine (Y page 311).
The KEYLESS-GO start/stop button can be
pulled out of the starter switch easily. You can
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then insert the SmartKey into the starter
switch.
iThe KEYLESS-GO start/stop button does
not need to be removed from the starter
switch when you leave the vehicle.
However, always take the SmartKey with
you when you leave the vehicle. As long as
the SmartKey is in the vehicle, the vehicle’s
electrical systems can be switched on or
the engine can be started using the
KEYLESS-GO start/stop button.
:KEYLESS-GO start/stop button;Starter switchXInsert the KEYLESS-GO start/stop button
into the starter switch (if not inserted
already).
iAllow for 2 seconds until the system has
detected the KEYLESS-GO start/stop
button.
XMake sure the automatic transmission is in
park position P.
XDo not depress the brake pedal.
KEYLESS-GO start/stop button
=USA only?Canada only
Position 0
Before you press the KEYLESS-GO start/stop
button, the vehicle’s on-board electronics
have status 0 (as with SmartKey removed).
Position 1
XPress the KEYLESS-GO start/stop button
once.
This supplies power for some electrical
consumers, e.g. wipers.
iWhen you now open the driver’s door, the
power supply is switched off.
Ignition (or position 2)
XPress the KEYLESS-GO start/stop button
twice.
This supplies power for all electrical
consumers.
When you switch on the ignition, all lamps
in the instrument cluster come on. The
high-beam headlamp indicator lamp and
turn signal indicator lamps will only come
on if activated. If a lamp in the instrument
cluster fails to come on when the ignition
is switched on, have it checked and
replaced if necessary. If a lamp in the
instrument cluster remains on after
starting the engine or comes on while
driving, refer to “Lamps in instrument
cluster” (Y page 489).
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iWhen you now press the KEYLESS-GO
start/stop button once and the driver’s
door is open, the power supply is switched
off.
Seats
Safety notes
GWarning!
In order to avoid possible loss of vehicle
control the following must be done before the
vehicle is put into motion:
R seat adjustment
R head restraint adjustment
R steering wheel adjustment
R rear view mirror adjustment
R fastening of seat belts
GWarning!
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position as
this can be dangerous. You could slide under
the seat belt in a collision. If you slide under
it, the seat belt would apply force at the
abdomen or neck. That could cause serious
or fatal injuries. The seat backrest and seat
belts provide the best restraint when the
wearer is in a position that is as upright as
possible and seat belts are properly
positioned on the body.
GWarning!
Your seat must be adjusted so that you can
correctly fasten your seat belt.
Observe the following points:
R Adjust the seat backrest until your arms are
slightly angled when holding the steering
wheel.
R Adjust the seat to a comfortable seating
position that still allows you to reach the
accelerator/brake pedal safely. The
position should be as far back as possible
with the driver still able to operate the
controls properly.
R Adjust the head restraint so that it is as
close to the head as possible. The center of
the head restraint must support the back of
the head at eye level.
R Never place hands under the seat or near
any moving parts while a seat is being
adjusted.
Failure to do so could result in an accident
and/or serious personal injury.GWarning!
The power seats can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
GWarning!
According to accident statistics, children are
safer when properly restrained in the rear
seating positions than in the front seating
position. Thus, we strongly recommend that
children be placed in the rear seats whenever
possible. Regardless of seating position,
children 12 years old and under must be
seated and properly secured in an
appropriately sized infant restraint, toddler
restraint, or booster seat recommended for
the size and weight of the child. For additional
information, see “Children in the vehicle”.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
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XAdjust the seat using seat
switches :, ; and A.
Adjusting front passenger seat from
driver’s seat/rear
GWarning!
When adjusting the front passenger seat,
make sure the seat, if occupied, is as far from
the front passenger front air bag as possible.
Otherwise, the passenger could be seriously
or even fatally injured in the event of an
accident or braking maneuver.
Make sure no one is caught or injured while
the seat is being adjusted.
Even with the SmartKey or SmartKey with
KEYLESS-GO removed from the starter switch
or the SmartKey with KEYLESS-GO removed
from the vehicle, the power seats can be
operated. Therefore, do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an accident
and/or serious personal injury.
! Do not move the front passenger seat
completely forward if objects are stored in
the parcel net in the front passenger-side
footwell. Items in the net may be damaged.
Adjusting front passenger seat from
driver’s seat
You can adjust the front passenger seat using
the seat switches on the driver’s side.
XPress button :.When the indicator lamp in button : is on,
you can operate the following features of the
front passenger seat:
Rseat adjustment
Rseat heating/ventilation
Rmemory function
Setting front passenger seat position
from rear
The button is located on the right rear
passenger door.
XPress button : to adjust the front
passenger seat.
The indicator lamp in button : comes on.
XAdjust front passenger seat using seat
switches ;, =, ? and A.
XTo adjust right rear passenger seat, press
button : again.
The indicator lamp in button : goes out.
iThe front passenger seat cannot be
adjusted from the rear when the override
switch is activated (Y page 61).
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Head restraint fore and aft adjustment XPush or pull on the upper edge of the head
restraint cushion to the desired position.
Comfort head restraint
GWarning!
When folding back the side cushions, never
reach between the side cushion and the
mounting post. You could otherwise be
trapped.
You can adjust the side cushions of the head
restraints individually.
XAdjusting side cushions: Pull or push side
cushions : into desired position.
XAdjusting forward or backward: Pull or
push head restraint in direction of
arrow ;.
Easy-entry/exit feature
This feature allows for easier entry into and
exit from the vehicle. When entering and
exiting the vehicle, the driver’s seat moves to
its most rearward position. The steering
wheel moves to its uppermost position.
With the easy-entry/exit feature activated
the steering wheel tilts upwards and the
driver’s seat moves to its most rearward
position
Rwhen you remove the SmartKey from the
starter switch,
or
Rwhen you open the driver’s door with the
SmartKey in starter switch position 0 or 1
or the KEYLESS-GO start/stop button in
position 1
The easy-entry/exit feature can be switched
on or off in the Vehicle menu of the
COMAND system (Y page 208).
GWarning!
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver’s seat when the easy-entry/
exit feature is activated.
To stop seat/steering wheel movement, do
one of the following:
RPress seat adjustment switch.
RMove steering wheel adjustment stalk.
RPress one of the memory position buttons
or the memory button M.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
! Do not activate the easy-entry/exit
feature if the seat backrest is in an
excessively reclined position. Doing so
could cause damage to front or rear seats.
First move the seat backrest to an upright
position.
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The steering wheel and driver’s seat will
return to their last set memory position or a
factory-set maximum forward position
R when you close the driver’s door with the
ignition switched on
R when you insert the SmartKey into the
starter switch
R when you press the KEYLESS-GO start/
stop button once with the driver’s door
closed
i For safety reasons, the driver’s seat will
not return to its last set position if the
system recognizes the last set position as
an extreme forward position. Instead, the
driver’s seat will remain at or move to a
factory-set maximum forward position. To
again fully return the driver’s seat to your
last set position or to memory position,
adjust the seat to the desired position or
press and hold the respective memory
position button ( Y page 297).
i The last set driver’s seat and steering
wheel positions are stored when the
ignition is switched off and the position is
stored in memory.
i If the current position for the steering
wheel is in the uppermost tilt position, the
steering wheel will not move.
If the current seat position is within a
factory-set position range and the system
recognizes the current seat position to be
rearward enough for easy entry and exit,
the driver’s seat will not move to the rear.
The adjustment procedure is interrupted
briefly when the engine is started.GWarning!
Let the system complete the adjustment
procedure before setting the vehicle in
motion. All driver’s seat and steering wheel
adjustments must be completed before
setting the vehicle in motion. Driving off with
the driver’s seat/steering wheel still
adjusting could cause the driver to lose
control of the vehicle.
Crash-responsive exit aid
When you open the driver’s door after an
accident has occurred, the steering column
moves up. The position of the SmartKey in the
starter switch is insignificant. This function
facilitates exiting as well as rescue of vehicle
occupants.
The crash-responsive exit aid can only be
triggered when the easy-entry/exit feature is
activated via the control system.
Rear seat head restraints
GWarning!
For safety reasons, always drive with the rear
head restraints in the upright position when
the rear seats are occupied.
Keep the area around head restraints clear of
articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
GWarning!
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint in such a way that it
is as close to the head as possible and the
center of the head restraint supports the back
of the head at eye level. This will reduce the
potential for injury to the head and neck in the
event of an accident or similar situation.
With a rear seat occupied, make sure to move
the respective head restraint up from the
lowest non-use position and have the
occupant adjust the head restraint properly.
Do not drive the vehicle without the seat head
restraints installed when the rear seats are
occupied. Head restraints are intended to
help reduce injuries during an accident.
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Steering wheel adjustmentXAdjusting steering wheel in or out: Move
stalk in direction of arrows :.
XAdjusting steering wheel up or down:
Move stalk in direction of arrows ;.
iThe memory function (Y page 297) lets
you store the settings for the steering
wheel together with the settings for the
seat position and the exterior rear view
mirrors.
Heated steering wheel
The steering wheel heating warms up the
leather area of the steering wheel.
XSwitch on the ignition.XSwitching on: Turn switch at the tip of the
stalk in direction of arrow :.
Indicator lamp = comes on.
iThe steering wheel heating will not switch
on, when the temperature of the vehicle
interior is above 86‡ (30†).
XSwitching off: Turn switch at the tip of
stalk in direction of arrow ;.
Indicator lamp = goes out.
iIndicator lamp = flashes or goes out in
case of power surge or undervoltage or if
the steering wheel heating malfunctions.
iThe steering wheel heating switches off
automatically when you remove the
SmartKey from the starter switch or, on
vehicles with KEYLESS-GO, when you
switch off the ignition and open the driver’s
door.
The steering wheel heating switches off
automatically:
Rwhen you remove the SmartKey from the
starter switch
Ron vehicles with KEYLESS-GO, when you
switch off the ignition and open the
driver’s door
Rwhen the temperature of the vehicle
interior is above 86‡ (30†)
Rafter approximately 24 minutes
For more information on the steering wheel,
see “Multifunction steering wheel”
(Y page 221).
Mirrors
Notes
Adjust the interior and exterior rear view
mirrors before driving so that you have a good
view of the road and traffic conditions.
Interior rear view mirror
XAdjust the interior rear view mirror
manually.
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Switch off the parking lamps or the rear fog
lamp manually.
! Failure to switch off the parking lamps
when leaving the vehicle may result in a
discharged battery.
i Vehicles without front fog lamps: For
better detection of the vehicle, the LED
daytime running lamps are dimmed to
parking lamp level when the low-beam
headlamps are switched on.
Low-beam headlamps
The low-beam headlamps can be switched on
and off with the exterior lamp switch.
XSwitch on the ignition.XSwitching on: Turn the exterior lamp
switch to position L.
The following lamps come on:
R Low-beam headlamps
R Parking lamps 38
R Green indicator lamp T in the exterior
lamp switchXSwitching off: Turn the exterior lamp
switch to position $.
Automatic headlamp mode
GWarning!
If the exterior lamp switch is set to c, the
headlamps will not automatically come on
under foggy conditions.
To minimize risk to you and to others, activate
headlamps by turning exterior lamp switch to
L when driving or when traffic and/or
ambient lighting conditions require you to do
so.
In low ambient lighting conditions, only switch
from position c to L with the vehicle
at a standstill in a safe location. Switching
from c to L will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions may result in an
accident.
The automatic headlamp feature is only an aid
to the driver. The driver is responsible for the
operation of the vehicle’s lights at all times.XSwitching on: Turn the exterior lamp
switch to position c.
When ambient light is low: When the
SmartKey is in starter switch position 1 or
when the KEYLESS-GO start/stop button has
been pressed once, the parking lamps 38
come on automatically.
When the engine is running, the low-beam
headlamps come on additionally.
When ambient light is bright: When the
SmartKey is in starter switch position 1 or
when the KEYLESS-GO start/stop button has
been pressed once, all lamps are off.
When the engine is running, the daytime
running lamps 39
come on automatically.
When the low-beam headlamps are switched
on, the green indicator lamp T in the
exterior lamp switch comes on.
Once the low-beam headlamps are on, the
high-beam headlamps are also available.
Daytime running lamp mode
In Canada, the daytime running lamp mode is
mandatory and therefore in a constant mode.
In the USA, the daytime running lamp mode
is deactivated by default.
XActivate the daytime running lamp mode
using the control system, see “Switching38 When the parking lamps are on, the tail lamps, the license plate lamps, the side marker lamps, and the
instrument cluster illumination are also on.
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