Page 27 of 337
Keys, doors and windows259Warning
Use the child locks whenever
children are occupying the rear
seats.
Using a key or suitable screwdriver,
turn the child lock in the rear door to
the horizontal position. The door
cannot be opened from the inside.
To deactivate, turn the child lock to
the vertical position.
Doors
Load compartment
Tailgate
Opening5-door hatchback
After unlocking, push the touchpad
switch below the brand emblem and open the tailgate.
3-door hatchback
Press x on radio remote control or
push the brand emblem at the bottom
half to unlock and open the tailgate.
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26Keys, doors and windows
Pressing x opens the tailgate even
if the doors are locked.Sports tourer
After unlocking, push the touchpad
switch under the tailgate moulding
and open the tailgate.
Central locking system 3 22.4-door saloon
To unlock the boot lid, press x on
the remote control for at least
2 seconds, or, to open from the inside, press x in the centre console; the
boot lid is opened slightly.
With the doors centrally locked, the
boot lid cannot be opened by pressing
x in the centre console.
Closing
Use one of the interior handles.
Do not push the touchpad switch or
the emblem whilst closing as this will
unlock the tailgate again.
Central locking system 3 22.
General hints for operating
tailgate
9 Danger
Do not drive with the tailgate open
or ajar, e.g. when transporting
bulky objects, since toxic exhaust
Page 29 of 337

Keys, doors and windows27gases, which cannot be seen or
smelled, could enter the vehicle.
This can cause unconsciousness
and even death.Caution
Before opening the tailgate check
overhead obstructions, such as a
garage door, to avoid damage to
the tailgate. Always check the
moving area above and behind the tailgate.
Notice
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.
Vehicle security
Anti-theft locking system9 Warning
Do not use the system if there are
people in the vehicle! The doorscannot be unlocked from the
inside.
The system deadlocks all the doors.
All doors must be closed otherwise
the system cannot be activated.
If the ignition was on, the driver's door
must be opened and closed once so
that the vehicle can be secured.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button.
Activating
Press e on the radio remote control
twice within 15 seconds.
Anti-theft alarm system The anti-theft alarm system is
combined with the central locking
system.
It monitors: ■ doors, tailgate, bonnet
■ passenger compartment including adjoining load compartment
■ vehicle inclination, e.g. if it is raised
■ ignition
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28Keys, doors and windows
Activation■ Self-activated 30 seconds after locking the vehicle by pressing e
once.
■ Directly by pressing e twice briefly
within five seconds.
Notice
Changes to the vehicle interior such
as the use of seat covers, and open
windows or sunroof, could impair the
function of passenger compartment
monitoring.
Activation without monitoring of
passenger compartment and
vehicle inclinationSwitch off the monitoring of
passenger compartment and vehicle
inclination when animals are being
left in the vehicle, because of high
volume ultrasonic signals or
movements triggering the alarm. Also switch off when the vehicle is on a
ferry or train.
1. Close tailgate, bonnet, windows and sunroof.
2. Press o. LED in the button o
illuminates for a maximum of
10 minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre (DIC).Status LED
Status LED is integrated in the sensor
on top of the instrument panel.
Status during the first 30 seconds of
anti-theft alarm system activation:
LED illuminates=test, arming delayLED flashes
quickly=doors, tailgate or
bonnet not
completely closed,
or system fault
Status after system is armed:
LED flashes
slowly=system is armed
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Keys, doors and windows29
Seek the assistance of a workshop in
the event of faults.
Deactivation
Unlocking the vehicle by pressing c
deactivates the anti-theft alarm system.
The system is not deactivated by
unlocking the driver's door with the
key or with the central locking button
in the passenger compartment.
Alarm When triggered, the alarm horn
sounds 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 c or by
switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warninglights. They will flash quickly three
times the next time the vehicle is
unlocked with the radio remote
control. Additionally a warning
message or a warning code is
displayed in the DIC after switching
on the ignition.
Vehicle messages 3 125.
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 22,
3 27.
Control indicator d 3 117.
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30Keys, doors and windowsExterior mirrors
Convex shape
The convex exterior mirror contains
an aspherical area and reduces blind spots. The shape of the mirror makes
objects appear smaller, which will
affect the ability to estimate
distances.
Electric adjustment
Select the relevant exterior mirror by
turning the control to left (L) or right
(R) . Then swivel the control to adjust
the mirror.
In position 0 no mirror is selected.
Folding mirrors
For pedestrian safety, the exterior
mirrors will swing out of their normal
mounting position if they are struck
with sufficient force. Reposition the mirror by applying slight pressure tothe mirror housing.
Electric folding
Turn control to 0, then push the
control down. Both exterior mirrors
will fold.
Push the control down again - both
exterior mirrors return to their original position.
If an electrically folded mirror is
manually extended, pressing down
the control will only electrically extend
the other mirror.
Page 33 of 337
Keys, doors and windows31Heated mirrors
Operated by pressing Ü.
Heating works with the engine
running and is switched off
automatically after a short time.
Interior mirrors
Manual anti-dazzle
To reduce dazzle, adjust the lever on the underside of the mirror housing.
Automatic anti-dazzle
Dazzle from following vehicles at
night is automatically reduced.
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32Keys, doors and windowsWindows
Windscreen
Heat-reflecting windscreen
The heat-reflecting windscreen has a
coating which reflects solar radiation. Also data signals, e.g. from tollstations, 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 cranks.
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 3 160.
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.