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Keys, doors and windows27
Status during the first 30 seconds of
anti-theft alarm system activation:LED illu‐
minates=test, arming delay.LED
flashes
quickly=doors, tailgate or
bonnet not completely
closed, or system fault.
Status after system is armed:
LED flashes
slowly=system is armed.
Seek the assistance of a workshop in
the event of faults.
Deactivation
Unlocking the vehicle deactivates the
anti-theft alarm system.
Alarm When triggered, the alarm sounds via a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals
are stipulated by legislation.
The alarm can be silenced by
pressing any button on the radio
remote control or by switching on the
ignition.
The anti-theft alarm system can be
deactivated only by pressing button
c or by switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times when the vehicle is unlocked
next time with the radio remote
control. Additionally a warning
message or a warning code is
displayed in the Driver Information
Centre after switching on the ignition.
Vehicle messages 3 120.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.Immobiliser
The system is part of the ignition
switch and checks whether the
vehicle is allowed to be started with
the key being used.
The immobiliser is activated
automatically after the key has been
removed from the ignition switch.
If the control indicator d flashes when
the ignition is on, there is a fault in the
system; the engine cannot be started. Switch off the ignition and repeat the
start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Notice
The immobiliser does not lock the
doors. You should always lock the
vehicle after leaving it and switch on the anti-theft alarm system 3 21,
3 25.
Control indicator d 3 112.
Page 32 of 293

30Keys, doors and windowsWindows
Windscreen
Heat-reflecting windscreen
The heat-reflecting windscreen has a
coating which reflects solar radiation. Also data signals, e.g. from toll
stations, might be reflected.
The marked areas on the windscreen are not covered with the coating.
Devices for electronic data recording
and fee payment must be attached in
these areas. Otherwise data
recording malfunctions may occur.
Windscreen stickers
Do not attach stickers such as toll
road stickers or similar on the
windscreen in the area of the interior
mirror. Otherwise the detection zone
of the sensor and the view area of the camera in the mirror housing could be restricted.
Manual windows The door windows can be opened or
closed with the window winders.
Power windows9 Warning
Take care when operating the
power windows. Risk of injury,
particularly to children.
If there are children on the rear seats, switch on the child safety
system for the power windows.
Keep a close watch on the
windows when closing them.
Ensure that nothing becomes
trapped in them as they move.
Switch on ignition to operate power
windows. Retained power off 3 154.
Operate the switch for the respective
window by pushing to open or pulling to close.
Pushing or pulling gently to the first
detent: window moves up or down as
long as the switch is operated.
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Keys, doors and windows31
Pushing or pulling firmly to the second
detent and then releasing: window
moves up or down automatically with
safety function enabled. To stop
movement, operate the switch once
more in the same direction.
Safety function
If the window glass encounters
resistance above the middle of the
window during automatic closing, it is immediately stopped and opened
again.
Override safety function
In the event of closing difficulties due to frost or the like, switch on the
ignition, then pull the switch to the first
detent and hold. The window moves
up without safety function enabled.
To stop movement, release the
switch.Child safety system for rear
windows
Press switch z to deactivate rear
door power windows, the LED
illuminates. To activate, press z
again.
Operating windows from outside
The windows can be operated
remotely from outside the vehicle.
Press and hold c button to open
windows.
Press and hold e button to close
windows.
Release button to stop window
movement.
If the windows are fully opened or
closed, the hazard warning lights will
flash two times.
Overload
If the windows are repeatedly
operated within short intervals, the
window operation is disabled for
some time.
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32Keys, doors and windows
Initialising the power windowsIf the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message or a warning code
is displayed in the Driver Information
Centre.
Vehicle messages 3 120.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on ignition.
3. Pull switch until the window is closed and keep pulling for
additional 2 seconds.
4. Repeat for each window.Heated rear window
Operated by pressing the Ü button.
Heating works with the engine
running and is switched off
automatically after a short time.
Depending on the engine type, the
heated rear window comes on
automatically when the diesel particle filter is being cleaned.
Sun visors
The sun visors can be folded down or swivelled to the side to prevent
dazzling.
If the sun visors have integral mirrors, the mirror covers should be closed
when driving.
A ticket holder is located on the
backside of the sun visor.
Roller blinds
To reduce sunlight at the second row seats, pull the blind upwards using
the grip and engage it at the top of the
door frame.
Page 35 of 293

Keys, doors and windows33Roof
Glass panel Panorama roof
Pull the slider to open the cover of the
panorama roof.
Push the slider to cover the panorama roof.
Sunblind
The sunblind above the rear seats is
electrically operated.
Button
G=openH=close
Press button G or H gently to the first
detent: the sunblind is opened or
closed as long as the switch is
operated.
Press button G or H firmly to the
second detent and then release: the sunblind is opened or closed
automatically. To stop movement,
operate the switch once more.
Safety function
If the sunblind encounters resistance
during automatic closing, it is
immediately stopped and opened again.
Function standby In ignition switch position 1 the
sunblind is operational 3 154.
Initialising after a power failure
After a power failure, it may only be
possible to operate the sunblind to a limited extent. Initialise the system as follows:
1. Turn key in ignition switch to position 1.
2. Press button G (open) twice
gently to the first detent, the
sunblind opens slightly.
3. Immediately press button H
(close) twice gently to the first detent, the sunblind closes
slightly.
After step 3 the sunblind is in
initialising mode without safety
function.
Page 55 of 293

Seats, restraints53Airbag system
The airbag system consists of a
number of individual systems
depending on the scope of
equipment.
When triggered the airbags inflate
within milliseconds. They also deflate
so quickly that it is often unnoticeable during the collision.9 Warning
If handled improperly the airbag
systems can be triggered in an
explosive manner.
Notice
The airbag systems and belt
pretensioner control electronics are
located in the centre console area.
Do not put any magnetic objects in
this area.
Do not stick anything on the airbag
covers and do not cover them with
other materials.
Each airbag is triggered only once.
Have deployed airbags replaced by
a workshop. Furthermore, it might be necessary to have the steering
wheel, the instrument panel, parts of
the panelling, the door seals,
handles and the seats replaced.
Do not make any modifications to
the airbag system as this will
invalidate the vehicle type approval.
When the airbags inflate escaping hot gases may cause burns.
Control indicator v for airbag systems
3 108.
Front airbag system
The front airbag system consists of
one airbag in the steering wheel and one in the instrument panel on the
front passenger side. These can be
identified by the word AIRBAG.
Additionally there is a warning label
on the side of the instrument panel,
visible when the front passenger door is open, or on the front passenger sun
visor.
The front airbag system is triggered in
the event of a front-end impact of a
certain severity. The ignition must be
switched on.
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54Seats, restraints
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the upper body and head of
the front seat occupants
considerably.
9 Warning
Optimum protection is only
provided when the seat is in the
proper position.
Seat position 3 37.
Keep the area in which the airbag
inflates clear of obstructions.
Fit the seat belt correctly and
engage securely. Only then is the
airbag able to protect.
Side airbag system
The side airbag system consists of an
airbag in each front seat backrest.
This can be identified by the word
AIRBAG .
The side airbag system is triggered in the event of a side impact of a certain
severity. The ignition must be
switched on.
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the upper body and pelvis in
the event of a side-on collision
considerably.
9 Warning
Keep the area in which the airbag
inflates clear of obstructions.
Notice
Only use protective seat covers that
have been approved for the vehicle.Be careful not to cover the airbags.
Page 57 of 293

Seats, restraints55Curtain airbag system
The curtain airbag system consists of an airbag in the roof frame on each
side. This can be identified by the
word AIRBAG on the roof pillars.
The curtain airbag system is triggered in the event of a side-on impact of a
certain severity. The ignition must be
switched on.
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the head in the event of a
side-on impact considerably.
The curtain airbag system does not
protect passengers on the third seat
row.9 Warning
Keep the area in which the airbag
inflates clear of obstructions.
The hooks on the handles in the
roof frame are only suitable for
hanging up light articles of
clothing, without coat hangers. Do
not keep any items in these
clothes.
Airbag deactivation
The front passenger airbag system
has to be deactivated if a child
restraint system is to be fitted on this
seat. The side airbag and curtain
airbag systems, the belt
pretensioners and all driver airbag
systems will remain active.
The front passenger airbag system
can be deactivated via a key-
operated switch on the right side of
the instrument panel.