Page 30 of 327

28Keys, doors and windowsVehicle personalisation 3 121.
The setting can be saved for the
remote control or electronic key being used 3 23.
Passive locking
In vehicles with electronic key
system, this feature locks the vehicle
automatically after several seconds if an electronic key has been
recognised previously inside the
vehicle, all doors have then been
closed and the electronic key does
not remain in the interior.
If the electronic key remains in the
vehicle or the ignition is not off,
passive locking will not be permitted
and a warning tone sounds three
times.
If there have been two or more
electronic keys in the vehicle and the
ignition was on once, the feature
locks the vehicle if just one electronic
key is taken out of the vehicle.Passive locking can be disabled by
pressing c for a few seconds while
one door is open. It remains disabled
until e is pressed or the ignition is
switched on.
Activation or deactivation of passive
locking can be set in the menu
Settings , I Vehicle in the Colour-Info-
Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
The setting can be saved for the
remote control or electronic key being used 3 23.Child locks9 Warning
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. For
deactivation, turn the child lock to the vertical position.
Page 31 of 327
Keys, doors and windows29Doors
Load compartment Tailgate
Opening
5-door Hatchback, Sports Tourer,
Country Tourer
After unlocking, press the button
under the tailgate moulding and open the tailgate manually.
4-door Saloon
Press x on radio remote control
until the tailgate is opened
automatically, or press the button
under the tailgate moulding after
unlocking.
Central locking system 3 24.
Closing
Use the interior handle.
Do not pull the button under the
moulding whilst closing as this will unlock the tailgate again.
Central locking system 3 24.
Page 32 of 327

30Keys, doors and windowsPower tailgate9Warning
Take care when operating the
power tailgate. Risk of injury,
particularly to children.
Keep a close watch on the
movable tailgate when operating.
Ensure that nothing becomes
trapped during operating and no
one is standing within the moving
area.
The power tailgate is operated by:
● x on the radio remote control.
● The switch G in the door panel
of the driver's door.
● The touchpad switch and G in
the tailgate.
On vehicles with automatic transmission, the tailgate can only be operated when the vehicle is
stationary and automatic
transmission in P.
The tail lights flash and a chime
sounds when the power tailgate is
operating.
Notice
Operating the power tailgate does
not operate the central locking
system. To open the tailgate with the remote control, it is not necessary to
unlock the vehicle. Unlock the
vehicle first when operating with the
touchpad switch or the switch in the
driver's door. Lock the vehicle after
closing.
Central locking system 3 24.
Operation with radio remote control
Press and hold x until the tailgate
starts to open or close.
Operation with the switch in the
driver's door
Press and hold G until the tailgate
starts to open or close.
Page 33 of 327
Keys, doors and windows31Operation with switches in the tailgate
To open the tailgate, press the
touchpad switch under the tailgate
moulding until the tailgate starts to
move.
To close, press G in the open
tailgate until the tailgate starts to
move.
Stop or change direction of
movement
Pressing x on radio remote control
or G on the tailgate or press on the
touchpad switch whilst the tailgate is
moving will stop the tailgate in the
current position. Pressing x or
G again will reverse the direction of
movement.
Operation modes
The power tailgate has three modes
of operation, which are controlled by
the switch in the driver's door. To
change the mode, turn the switch:
● Normal mode MAX: Power
tailgate opens to full height.
● Intermediate mode 3/4: Power
tailgate opens to a reduced
height that can be adjusted.
● Mode Off: Tailgate can only be
operated manually.
Page 36 of 327

34Keys, doors and windowsActivating
Radio remote control or electronic
key: press e twice within 5 seconds.
Anti-theft alarm system The anti-theft alarm system is
operated in conjunction 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
Activation All doors must be closed and the
electronic key must not remain in the
vehicle. Otherwise the system cannot
be activated.
● Radio remote control: self- activated 30 seconds after
locking the vehicle by pressing e
once.
● Electronic key system: self- activated 30 seconds after
locking the vehicle by pressing the button on any exterior door
handle.
● Radio remote control or electronic key: directly by
pressing e twice within
5 seconds.
● Electronic key system with passive locking enabled: briefly
activated after passive locking
occurs.
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.
Page 37 of 327

Keys, doors and windows35Activation without monitoring of
passenger compartment and
vehicle inclination
Switch 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 the doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre.
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 faultStatus after system is armed:LED flashes
slowly:system is armed
Seek the assistance of a workshop in
the event of faults.
Deactivation
Radio remote control: Unlocking the
vehicle by pressing c deactivates
anti-theft alarm system.
Electronic key system: Unlocking the
vehicle by pressing the button on any
exterior door handle deactivates anti-
theft alarm system.
Page 38 of 327

36Keys, doors and windowsThe system is not deactivated when
unlocking the driver's door with the
key or with the central locking button
in the passenger compartment.
AlarmWhen triggered, the alarm hornsounds and the hazard warning lights
flash simultaneously. The number
and duration of alarm signals are
stipulated by legislation.
The anti-theft alarm system can be
deactivated only by pressing c or by
pressing the switch on the door
handle (electronic key system) or
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 is displayed in the Driver
Information Centre after switching on
the ignition.
Vehicle messages 3 119.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 is removed
from the ignition switch.
If 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 start
attempt.
If control indicator d 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 24,
3 34.
Control indicator d 3 109.
Page 40 of 327

38Keys, doors and windowsFolding mirrors with remote
control
This function is only available if thevehicle is equipped with electrical
seat memory.
Press e again after locking for
one second to fold in mirrors.
Press c again after unlocking for
one second to fold out mirrors.
Pressing for three seconds activates
window operation. Power windows
3 40. Sunroof 3 43.
If the mirrors were folded in using the
control in the driver's door, they are
not folded out by pressing c.
This function can be activated or
deactivated in the Vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
The settings are automatically stored
for the key being used 3 23.
Heated mirrors
Operated by pressing Ü.
The LED in the button indicates
activation.
Heating works with the engine
running and is switched off
automatically after a short time.
Automatic dimming Dazzling by following vehicles at night
is automatically reduced by dimming
the exterior mirror on the driver's side.
Parking assist For mirrors with position memory, theexterior mirror on the passenger side
is automatically aimed at the rear
tyres as a parking aid when reverse
gear is selected, except during trailer
operation.
Position memory 3 50.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display. Vehicle
personalisation 3 121.