The emergency release button does not open
the trunk, if the vehicle battery is discharged
or disconnected.
Valet locking
You can lock the trunk separately with the
mechanical key. This denies unauthorized
access to the trunk, e.g. when you valet park
the vehicle.
XLeave only the SmartKey less its
mechanical key with the vehicle.
XValet locking: Close the trunk.XRemove the mechanical key from the
SmartKey (Y page 315).
XInsert the mechanical key in the trunk lid
lock.
XTurn the mechanical key clockwise to
position 2 and remove the mechanical
key in that position to lock the trunk.
The trunk remains locked even when the
vehicle is centrally unlocked.
You can then only open the trunk with the
mechanical key.
XCanceling: Insert the mechanical key in
the trunk lid lock.
XTurn the mechanical key counterclockwise
to neutral position 1 and remove the
mechanical key in that position to unlock
the trunk.
You can now open the trunk.
Starter switch positions
SmartKey
GObserve Safety notes, see page 56.gFor removing SmartKey (gear selector
lever must be in park position P)
1Power 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 low-
beam headlamp indicator lamp, high-beam
headlamp indicator lamp, turn signal
indicator lamps, and the indicator lamps for
the fog 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 304).
If the SmartKey is left in starter switch
position 0 for an extended period of time, it
can no longer be turned in the starter switch.
In this case, the steering is locked. To unlock,
remove SmartKey from the starter switch and
reinsert.
The steering is locked when the SmartKey is
removed from the starter switch.
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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 337).
or
XGet a jump start (Y page 338).
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 85).
Pressing the KEYLESS-GO start/stop button
with the brake pedal firmly depressed will
start the engine (Y page 109).
The KEYLESS-GO start/stop button can be
pulled out of the starter switch easily. You can
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
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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.
i When 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 low-
beam headlamp indicator lamp, high-beam
headlamp indicator lamp, turn signal
indicator lamps, and the indicator lamps for
the fog 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 304).
i
When 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.
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RAdjust 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.
RNever 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/
or the child is not properly secured in the child
restraint.
GWarning!
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so 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.
Do not drive the vehicle without the seat head
restraints. Head restraints are intended to
help reduce injuries during an accident.
Seat adjustment
! When moving the seats, make sure there
are no items in the footwell or behind the
seats. Otherwise, you could damage the
seats and/or the items.
Power seats
iThe memory function (Y page 96) lets
you store the settings for the seat position
together with the settings for the steering
wheel and the exterior rear view mirrors.
iVehicles with split rear seat bench:
If you fold down one or both sections of the
rear seat backrest, the respective front
seat is moved forward slightly, if necessary,
to prevent contact with the rear seat
backrest.
XSeat fore and aft adjustment: Press the
switch forward or backward in direction of
arrow ?.
XSeat backrest tilt: Press the switch
forward or backward in direction of arrow
A.
XSeat height: Press the switch up or down
in direction of arrow =.
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XSeat cushion tilt: Press the switch up or
down in direction of arrow ; until your
upper legs are lightly supported.
XHead restraint height: Press the switch
up or down in direction of arrow :.
Head restraint fore and aft adjustment
XPush or pull on the lower 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 ;.
Lumbar support
You can adjust the contour of the front seat’s
lumbar support to help enhance support to
your spine.
XCurvature position: Use button : to
move the curvature up and button = to
move it down.
XDegree of curvature: Use button ; to
lessen the curvature and button ? to
increase it.
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
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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.
GWarning!
Make sure the rear seat head restraints
engage when placing them upright manually.
Otherwise their protective function cannot be
ensured.
The back of the head will not be supported in
the event of a collision. That could cause
serious or even fatal injuries. Rear seat
occupants can be seriously injured or killed.
Lowering rear seat head restraints
The rear seat head restraints can be lowered
for increased visibility.
XPress button :.
The rear seat head restraints are lowered.
Rear seat head restraint height
adjustment
XRaising: Pull head restraint upward to the
desired position.
XLowering: Press release button : and
push down on head restraint.
Rear seat head restraint fore and aft
adjustment
XAdjust the head restraint to the desired
position by pushing or pulling on the upper
edge of the head restraint cushion.
Rear seat head restraints, removing
and installing (vehicles with split
foldable rear seat backrest)
iThe rear seat head restraints cannot be
removed on vehicles which do not have the
split foldable rear seat backrest.
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XRemoving: Unlock the rear seat backrest
(Y page 199) and fold it slightly forward.
XPull head restraint to its highest position.XPress release button : and pull out head
restraint.
XInstalling: Position the head restraints so
that the notches on the rod are on the left
when looking in the direction of travel.
XInsert head restraint and push it down until
it engages.
XFold the rear seat backrest back until it
engages.
Drive-dynamic multicontour seat
The drive-dynamic multicontour seat is only
available on the driver’s side.
The drive-dynamic multicontour seat allows
several individual support adjustments and
can automatically adjust lateral support to
your driving style.
:Seat cushion length;Drive-dynamic function=Seat backrest side bolsters?Massage functionASeat backrest contour supportBSeat backrest contour up or downXSeat cushion length: Adjust the seat
cushion to the length of your upper leg
using switch :.
XSeat backrest side bolsters: Adjust the
side bolsters so that they provide good
lateral support using switch =.
XSeat backrest contour: Adjust the
contour of the seat backrest to the desired
position using switches A and B.
Drive-dynamic function
The drive-dynamic multicontour seat
electronically controls the air pressure in the
air chambers of the seat backrest side
bolsters. This function improves driving
comfort and pleasure.
You can choose between:
RLevel 1 (one indicator lamp comes on): Less
lateral support and slow air pressure build-
up in the air chambers of the seat backrest
side bolsters.
RLevel 2 (two indicator lamps come on):
Strong lateral support and fast air pressure
build-up in the air chambers of the seat
backrest side bolsters.
XSwitching on: Press button ; repeatedly
until the desired level is set.
One or two indicator lamps in the button
come on.
XSwitching off: Press button ; repeatedly
until all indicator lamps go out.
Massage function (PULSE)
You can reduce muscle tension during long
trips by periodically using the massage
function. you can choose between two levels.
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XSwitching on: Press button ? repeatedly
until the desired level is set.
One or two indicator lamps in the button
come on. The air cushions in the lumbar
region inflate and deflate rhythmically for
approximately 20 minutes.
Seat ventilation
The blue indicator lamps in seat ventilation
switch : come on to show which ventilation
level you have selected.
iThe seat ventilation for the driver’s seat
can be activated using the summer opening
feature (Y page 107).
XSwitch on the ignition.XSwitching on: Press seat ventilation
switch :.
Three blue indicator lamps in seat
ventilation switch : come on.
XPress seat ventilation switch : repeatedly
until the desired ventilation level is set.
XSwitching off: Press seat ventilation
switch : repeatedly until all indicator
lamps go out.
If there is insufficient voltage the seat
ventilating switches off automatically.
Seat heating
Front seat heating switches
Rear seat heating switch (Canada only)
The red indicator lamps in seat heating
switch : come on to show which heating
level you have selected.
The seat heating switches from level 3 (high)
to level 2 after approximately 8 minutes.
The seat heating switches from level 2 to level
1 (low) after approximately 10 minutes.
After approximately 20 minutes in level 1, the
seat heating switches off automatically.
XSwitch on the ignition.XSwitching on: Press seat heating
switch :.
XSwitching off: Press seat heating
switch : repeatedly until all indicator
lamps go out.
If there is insufficient voltage the seat heating
switches off automatically.
The seat heating will switch back on again
automatically as soon as sufficient voltage is
available.
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