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26Keys, doors and windowsManually unlock the driver's door by
inserting and turning the key blade in
the lock cylinder.
The other doors can be opened by
pulling the interior handle twice or by
pressing c in the driver's door panel.
The load compartment and fuel filler
flap will possibly not be unlocked.
By switching on the ignition, the anti-
theft locking system is deactivated.
Manual locking
Push inside locking knob of all doors
except driver's door or press e in the
driver's door panel. Then close the driver's door and lock it from the
outside by turning the key in the lock
cylinder. The fuel filler flap and
tailgate are possibly not locked.
After locking, cover the lock cylinder
with the cap: insert the cap with the
lower side in the recesses, swivel and
push the cap until it engages at the
upper side.
Automatic locking
Automatic locking after driving off
This security feature can be
configured to automatically lock all
doors, load compartment and fuel
filler flap after driving off and
exceeding a certain speed.
When at a standstill after driving, the
vehicle will be unlocked automatically
as soon as the key is removed from
the ignition switch, or with electronic
key system when the ignition is
switched off.
Activation or deactivation of
automatic locking can be set in the
menu Settings , I Vehicle in the Info-
Display.
Info-Display 3 120.
Vehicle personalisation 3 126.
The setting can be saved for each
electronic key being used 3 22.
Automatic relock after unlocking
This feature can be configured to
automatically lock all doors, load
compartment and fuel filler flap a
Page 29 of 323

Keys, doors and windows27short time after unlocking with the
remote control or electronic key,
provided no door has been opened.
Activation or deactivation of
automatic relock can be set in the
menu Settings , I Vehicle in the Info-
Display.
Info-Display 3 120.
Vehicle personalisation 3 126.
The setting can be saved for each electronic key being used 3 22.
Passive locking 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 within the vehicle.
If the electronic key remains in the
vehicle or the ignition is not off,
passive locking will not be permitted.
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.To prevent passive locking of the
vehicle e.g. when refuelling or if
passengers remain in the vehicle, the
system must be disabled.
To disable the system, press the
central locking button c for a few
seconds while one door is open. An
acoustic signal sounds three times to confirm deactivation. The function
remains disabled until the central
locking button 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 Info-Display.
Info-Display 3 120.
Vehicle personalisation 3 126.
The setting can be saved for each electronic key being used 3 22.Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Move the pin in the rear door to the front position. The door cannot be
opened from the inside.
To deactivate, move the pin to the
rear position.
Page 30 of 323
28Keys, doors and windowsDoors
Load compartment Tailgate
OpeningGrand Sport
After unlocking, push the brand
emblem and open the tailgate.
Sports Tourer, Country Tourer
After unlocking, push the touchpad
switch under the tailgate moulding
and open the tailgate manually.
Central locking system 3 22.
Closing
Use the interior handle.
Central locking system 3 22.
Power tailgate
9 Warning
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
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Keys, doors and windows29trapped during operating and no
one is standing within the moving
area.
The power tailgate can be operated
by:
● Pressing X twice on the
electronic key. To prevent
unintended opening of the
tailgate, X must be pressed
longer than during locking or unlocking.
● Handsfree operation with motion sensor below the rear bumper.
● The touchpad switch under the exterior tailgate moulding and
C in the open tailgate.
● The switch C on the inside of
the driver's door.
On vehicles with automatic
transmission, the tailgate can only be
operated when the vehicle is
stationary and with selector lever in P.
The turn signal lights flash and a
chime sounds when the power
tailgate is operating.
Note
Operating the power tailgate does not operate the central locking
system. To open the tailgate with the
button on the electronic key, or with
the touchpad switch under the
tailgate moulding or via handsfree
operation, it is not necessary to
unlock the vehicle. A precondition is
that the electronic key is outside the
vehicle, within a range of approx.
one metre of the tailgate.
Do not leave the electronic key in the load compartment.
Lock the vehicle after closing if it was
unlocked previously.
Central locking system 3 22.Operation with the electronic key
Press X twice to open or close the
tailgate. To prevent unintended
opening of the tailgate, X must be
pressed longer than during locking or unlocking.
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30Keys, doors and windowsHandsfree operation with motion
sensor below the rear bumper
To open or close the tailgate, move
the foot below the rear bumper back
and forth in the area where the
hologram is projected on the ground. Do not hold the foot longer or move
too slow below the bumper. The
electronic key must be outside the
vehicle, within a range of approx.
one metre of the tailgate. When foot
motion is being detected by the
sensor, the system actuates the
tailgate after a short delay.
9 Danger
Do not touch any vehicle parts
below the vehicle during
handsfree operation. There is a
risk of injury from hot engine parts.
Operation with the touchpad switch
under the exterior tailgate moulding
To open the tailgate, press the
touchpad switch under the tailgate
moulding until the tailgate starts to
move. If the vehicle is locked, the
electronic key must be outside the
vehicle, within a range of approx.
one metre of the tailgate.
To close, press C in the open
tailgate until the tailgate starts to
move.
Page 35 of 323

Keys, doors and windows33the tailgate. Always check the
moving area above and behind the
tailgate.
Note
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.
Note
The operation of the power tailgate
is disabled under low vehicle battery
conditions. In this case, the tailgate
may not even be manually operable.
Note
With the power tailgate disabled and
all doors unlocked, the tailgate can
only be operated manually. In this
event, manually closing the tailgate
requires significantly greater force.
Note
At low outside temperatures the
tailgate may not open fully by itself.
In this event, lift the tailgate manually
to its normal end position.
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.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button.
Activating
Press e on the electronic key twice
within five seconds.
Anti-theft alarm system
The anti-theft alarm system is
combined with the anti-theft locking
system.
It monitors: ● doors, tailgate, bonnet
● passenger compartment including adjoining load
compartment
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34Keys, doors and windows● vehicle inclination, e.g. if it israised
● ignition
Activation All doors must be closed and the
electronic key of the electronic key
system must not remain in the
vehicle. Otherwise the system cannot
be activated.
● self-activated 30 seconds after locking the vehicle by pressing
the button on any exterior door
handle.● directly by pressing e twice within
five seconds.
● with passive locking enabled: briefly activated after passive
locking occurs.
Note
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
ten minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre.
Page 37 of 323

Keys, doors and windows35Status 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
Seek the assistance of a workshop in the event of faults.
Deactivation
Unlocking the vehicle by pressing the
button on any exterior door handle
deactivates the anti-theft alarm
system.
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
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 anti-theft alarm system can be
deactivated by pressing c, by
pressing the switch on the door
handle with 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 the next time the vehicle is
unlocked with the electronic key.
Additionally, a warning message is
displayed in the Driver Information Centre after switching on the ignition.
Vehicle messages 3 124.
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.