
Changing the settings of the locking
system
You can change the settings of the locking
system in such a way that only the driver's
door and the fuel filler flap are unlocked. This
is useful if you frequently travel on your own.XTo change the setting: press the %
and & buttons simultaneously for
approximately six seconds until the battery
check lamp flashes twice.
The SmartKey now functions as follows:
XTo unlock the driver's door: press the
% button once.XTo unlock centrally: press the %
button twice.XTo lock centrally: press the & button.
The KEYLESS-GO function is changed as
follows:
XTo unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.XTo unlock centrally: touch the inner
surface of the front-passenger door handle.XTo lock centrally: touch sensor
surface : on one of the door handles.
Restoring the factory settings
XPress the % and & buttons
simultaneously for approximately six
seconds until the battery check lamp
flashes twice.
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered
( Y page 71).
There are several ways to turn off the alarm:XPress the % or & button on the
SmartKey.
or
XInsert the SmartKey into the ignition lock.
or
XPress the Start/Stop button in the ignition
lock. The SmartKey must be in the vehicle.
or
XLock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
Removing the mechanical key
XPush release catch : in the direction of
the arrow and at the same time remove
mechanical key ; from the SmartKey.
SmartKey battery
Important safety notes
It is advisable to have batteries replaced at a
qualified specialist workshop, e.g. at an
authorized Mercedes-Benz Center.
GWarning!
Batteries are toxic and contain caustic
substances. For this reason, keep batteries
out of the reach of children.
If a battery has been swallowed, visit a doctor
immediately.
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iWhen you push either of the two buttons
and an audible warning signal does not
sound, the relevant setting has already
been selected.
You can switch the automatic locking
function on and off using the on-board
computer (Y page 210).
Unlocking the driver's door
(mechanical key)
If the vehicle can no longer be unlocked
centrally with the SmartKey or KEYLESS-GO:
XTake the mechanical key out of the
SmartKey (Y page 77).
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
XTurn the mechanical key counter-clockwise
to position 1.
The door is unlocked.
XTurn the mechanical key back and remove
it.
Locking the vehicle (mechanical key)
Emergency locking
XOpen the driver's door.XClose the front-passenger door and the
trunk lid.
XPress the locking button (Y page 81).XMake sure that the locking knob on the
front-passenger door is still visible. Press
down the locking knob by hand, if
necessary.
XClose the driver's door.XTake the mechanical key out of the
SmartKey (Y page 77).
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
XTurn the mechanical key clockwise as far
as it will go to position 1.
XTurn the mechanical key back and remove
it.
XMake sure that the doors and the trunk lid
are locked.
iIf you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not activated.
Trunk
Important safety notes
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
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Vehicles with KEYLESS-GO:
RRelease the sensor surface on the outside
door handle to stop the closing procedure.
RImmediately pull on the same outside door
handle and hold firmly. The windows and
the panorama roof with power tilt/sliding
panel will open for as long as the door
handle is held but the door not opened.
Using the SmartKey
iThe key must be near the handle of the
driver's door.
XPoint the tip of the key at the driver's door
handle.
XPress and hold the & button until the
side windows and the panorama roof with
power tilt/sliding panel are fully closed.
XMake sure that all the side windows and the
panorama roof with power tilt/sliding
panel are closed.
On vehicles with a panorama roof with power
tilt/sliding panel:
XPress and hold the & button again until
the roller sunblind of the panorama roof
with power tilt/sliding panel closes.
XTo interrupt the convenience closing
procedure: release the & button.
Using KEYLESS-GO
The SmartKey with KEYLESS-GO must be
outside the vehicle but no more than 3 ft (1 m)
away from a door.
XClose all the doors.XTouch the sensor surface on door
handle : until the side windows and the
panorama roof with power tilt/sliding
panel are fully closed.
iMake sure you only touch sensor
surface :.
XMake sure that all the side windows and the
panorama roof with power tilt/sliding
panel are closed.
On vehicles with a panorama roof with power
tilt/sliding panel:
XTouch sensor surface : on the door
handle again until the roller sunblind of the
panorama roof with power tilt/sliding
panel closes.
XTo interrupt convenience closing:
release sensor surface : on the door
handle.
Resetting the side windows
You must reset all the side windows if the side
window cannot be closed fully.
XClose all the doors.XTurn the key to position 2 in the ignition
lock.
XPull on the corresponding switch on the
door control panel until the side window is
completely closed (Y page 86).
XHold the switch for an additional second.88Side windowsOpening and closing
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XTurn the key to position 2 in the ignition
lock.XPush or pull the 3 switch in the
corresponding direction.
i If you press the 3 switch beyond the
point of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by pressing again.
Resetting the panorama roof with
power tilt/sliding panel and the roller
sunblind
Reset the panorama roof with power tilt/
sliding panel and the roller sunblind if the
panorama roof with power tilt/sliding panel
or the roller sunblind does not close
smoothly.
! Do not open the panorama sliding sunroof
until it has been reset properly. Otherwise,
the panorama roof with power tilt/sliding
panel may lock in the open position.
If the panorama roof with power tilt/sliding
panel cannot be closed or adjusted,
contact a qualified specialist workshop,
e.g. a Mercedes-Benz Service Center.
XTurn the SmartKey to position 2 in the
ignition lock.XPull the 3 switch repeatedly to the point
of resistance in the direction of arrow =
until the panorama roof with power tilt/
sliding panel is fully closed.XKeep the 3 switch pulled for an
additional second.XPull the 3 switch repeatedly to the point
of resistance in the direction of arrow =
until the roller sunblind is fully closed.XKeep the 3 switch pulled for an
additional second.XMake sure that the panorama roof with
power tilt/sliding panel ( Y page 102) and
the roller sunblind (Y page 102) can be fully
opened again.Problems with the sliding sunroof
Problem: the sunroof cannot be closed
and you cannot see the cause.GWarning!
You could be severely or even fatally injured
when closing the sliding sunroof with
increased closing force or if the anti-
entrapment feature is deactivated. Make sure
that nobody can become trapped when
closing the sliding sunroof.
If the sliding sunroof is obstructed during
closing:
XImmediately after the sliding sunroof
blocks, pull the 3 switch in the
overhead control panel down to the point
of resistance and hold it until the sliding
sunroof is closed.
The sliding sunroof is closed with increased
force.
If the sliding sunroof is obstructed during
closing again:
XImmediately after the sliding sunroof
blocks, pull the 3 switch in the
overhead control panel down to the point
of resistance and hold it until the sliding
sunroof is closed.
The sliding sunroof is closed without the
anti-entrapment feature.GWarning!
Pressing and holding the sliding sunroof
switch to close the sliding sunroof
immediately after it had been blocked two
times will cause the sliding sunroof to close
without the anti-entrapment feature for as
long as you hold the switch.
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Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Correct driver's seat position
Observe the important safety notes on
( Y page 107).
XCheck whether you have adjusted seat =
properly.
Electrical seat adjustment ( Y page 108)
When adjusting the seat, make sure:
R you are as far away from the driver's air
bag as possible.
R you are sitting in a normal upright
position.
R you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.XCheck whether the head restraint is
adjusted properly ( Y page 108).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the center of the head restraint.
Observe the important safety notes on
( Y page 113).
XCheck whether steering wheel : is
adjusted properly.
Adjusting the steering wheel electrically
( Y page 113)
When adjusting the steering wheel, make
sure:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the
instrument cluster clearly.
Observe the important safety notes on
( Y page 53).
XCheck whether you have fastened seat
belt ; properly ( Y page 54).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip jointsXBefore starting off, adjust the rear-view
mirror and the exterior mirrors
( Y page 114) in such a way that you have
a good view of road and traffic conditions.XVehicles with memory function: save the
seat, steering wheel and exterior mirror
settings ( Y page 116).106Correct driver's seat positionSeats, steering wheel and mirrors
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Seats
Important safety notes
GWarning
In order to avoid possible loss of vehicle
control, all seat, head restraint, steering
wheel and rear view mirror adjustments, as
well as fastening of seat belts, must be done
before setting the vehicle in motion.
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 travel 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. This 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 belt 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 and the center
of the head restraint supports 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 electrically adjustable 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.
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Do not drive the vehicle without the seat head
restraints. Head restraints are intended to
help reduce injuries during an accident.
! To avoid damage to the seats and the seat
heating, observe the following information:
Rdo not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not to be used to dry
the seats.
Rclean the seat covers as recommended;
see the " Interior care" section.
Rdo not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
Rwhen the seat heating is in operation, do
not cover the seats with insulating
materials, e.g. covers, bags, seat covers,
child seats or booster seats.
! When you move the seats, make sure that
there are no objects in the footwell or
behind the seats. Otherwise, you could
damage the seats and the objects.
iThe head restraints in the front seats are
installed with the NECK-PRO system
(Y page 51). For this reason, it is not
possible to remove the head restraints
from the front seats.
Please contact an authorized Mercedes-
Benz Center for more information.
iRelated topics:
RThrough-loading feature in the rear
bench seat4 (folding the rear bench seat
forwards) (Y page 252)
Adjusting the seats:Head restraint height;Seat cushion angle=Seat height?Seat fore-and-aft adjustmentABackrest angle
iIf PRE-SAFE® is triggered, the front-
passenger seat will be moved to a better
position if it was previously in an
unfavorable position.
iYou can store the seat settings using the
memory function (Y page 116).
iVehicles with the through-loading
feature: if you fold down a rear seat
backrest, the respective front seat is
moved forwards slightly, if necessary, to
prevent contact with the backrest.
Adjusting the head restraints
Adjusting the head restraints
electrically
XTo adjust the head restraint height: slide
the switch for head restraint adjustment
(Y page 108) up or down in the direction of
the arrow.
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:To adjust the thigh cushion;To adjust the backrest contour in the
lumbar region
=To adjust the backrest contour in the
upper back region
?To adjust the side bolsters of the seat
backrest
XMake sure that the key is in position 2 in
the ignition lock.
Adjusting the four-way lumbar
support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back.
:To raise the backrest contour;To soften the backrest contour=To lower the backrest contour?To harden the backrest contourSwitching the seat heating on/off
Switching on/off
GWarning!
Repeatedly setting the seat heating to level
3 may result in excessive seat temperatures.
The health of passengers that have limited
temperature sensitivity or a limited ability to
react to excessively high temperatures may
be affected or they may even suffer burn-like
injuries. Therefore, do not use seat heating
level 3 repeatedly.
The three red indicator lamps in the button
indicate the heating level you have selected.
iIf the battery voltage is too low, the seat
heating may switch off.
Driver's and front-passenger seat
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 key 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.
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