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28Keys, doors and windowsOperation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or remote control/electronic key
battery is discharged, the driver's
door can be locked or unlocked with
the mechanical key.
Manual unlocking
Electronic key: press and hold the
latch to extract the integral key.
Manually unlock the driver's door by
inserting and turning the key in the
lock cylinder.
The other doors can be opened by
pulling the interior handle. 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
Manually lock the driver's door by
inserting and turning the key in the lock cylinder.
To lock the other doors, remove the
black cover by using a key.
Insert key carefully and move to the
inner side of the door without turning
the key.
Remove key and attach black cover.
The fuel filler flap and tailgate are
possibly not locked.
Automatic locking Automatic locking after driving off This system allows automatic
simultaneous locking of the doors and
boot as soon as the speed of the
vehicle exceeds 10 km/h.
Page 31 of 263

Keys, doors and windows29If one of the doors or the load
compartment is open, the automatic
central locking does not take place.
This is signalled by the sound of the
locks rebounding, accompanied by
illumination of h in the instrument
panel, an audible signal and the display of an alert message.
You can activate or deactivate this
function permanently. With the
ignition on, press Q until an audible
signal starts and a corresponding message is displayed.
The state of the system stays in
memory when switching off the
ignition.
Automatic relock after unlocking
This feature automatically locks all
doors, load compartment and fuel
filler flap a short time after unlocking
with the remote control or electronic
key, provided no door has been
opened.
Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Child locks, mechanical
Turn the red child lock in the rear door to the horizontal position by using a
key. The door cannot be opened from
the inside.
To deactivate, turn the child lock to
the vertical position.
Page 32 of 263
30Keys, doors and windowsChild locks, electric
Remotely operated system to prevent
opening of the rear doors using their
interior controls and use of the rear
electric windows. The control is
located in the centre console in front
of the selector lever.
Switching on
Press R. The indicator lamp in the
button comes on, accompanied by a
confirmation message. This indicator
lamp remains on until the child lock is
switched off.
Switching off
Press R again. The indicator lamp on
button goes off, accompanied by a
confirmation message. This indicator
lamp remains on while child lock is
switched on.Doors
Load compartment TailgateOpening
After unlocking, press the touchpad
switch under the tailgate moulding
and open the tailgate.
Page 33 of 263

Keys, doors and windows31Closing
Use the interior handle.
Do not push the touchpad switch
whilst closing as this will unlock the
tailgate again.
Central locking system 3 24.
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
trapped during operating and no
one is standing within the moving
area.
The power tailgate can be operated
by:
● Pressing P longer on the
electronic key.
● Handsfree operation with motion sensor below the rear bumper.
● The touchpad switch under the exterior tailgate moulding andT in the open tailgate.
On vehicles with automatic
transmission, the tailgate can only be operated when the vehicle is
stationary and automatic
transmission in P.
The turn signal 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
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 24.
Operation with the electronic key
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32Keys, doors and windowsPress P longer to open or close the
tailgate.
Handsfree 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 below the license
plate (see illustration). The key must
be within a range of one meter. If
equipped with parking assist, the area is recognisable below the shown
sensor. 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.
Activation or deactivation of
handsfree operation can be set in the menu Settings , I Vehicle in the Info-
Display.
Info-Display 3 101.
Vehicle personalisation 3 104.9 Danger
Do not touch any vehicle parts
below the vehicle during
handsfree operation. There is a
risk of injury from hot engine parts.
Automatic locking after handsfree
operationPress button S in the open tailgate,
the whole vehicle will be locked after handsfree closing of the tailgate.
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.
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34Keys, doors and windowsRemove all obstacles before
resuming normal power operation.
If the vehicle is equipped with factory- fitted towing equipment and a trailer
is electrically connected, the power
tailgate can only be opened with the
touchpad switch or closed with T in
the open tailgate. Ensure that there
are no obstacles in the moving area.
Overload
If the power tailgate is repeatedly
operated at short intervals, the
function is disabled for some time.
Move tailgate manually into end
position to reset the system.
Initialising power tailgate
If the power tailgate cannot be
operated automatically (e.g. after
disconnecting the vehicle battery), a
warning message is displayed in the
Driver Information Centre.
Activate electronics as follows: 1. Open tailgate manually.
2. Close tailgate manually.
3. Switch on ignition.Seek the assistance of a workshop if
the problem is not solved.
General hints for operating
tailgate9 Danger
Do not drive with the tailgate open
or ajar, e.g. when transporting
bulky objects, since toxic exhaust
gases, 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, e.g. 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.
Notice
The operation of the power tailgate
is disabled under low vehicle battery
conditions. In this case, the tailgate
may not even by manually operable.
Notice
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.
Notice
At low outside temperatures the
tailgate may not open fully by itself.
In this case lift the tailgate manually
to its normal end position.
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Keys, doors and windows35Vehicle 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 N on the radio remote control
twice within five 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
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.
● 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 with a finger or thumb on one of
the front door handles at the
markings.
Page 38 of 263

36Keys, doors and windows
● Radio remote control orelectronic key: directly by
pressing e twice within
five 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, could impair the function
of passenger compartment
monitoring.
Activation 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.
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.
Indication
LED in the central locking button
flashes if the anti-theft alarm system
is activated.
Seek the assistance of a workshop in the event of faults.
Deactivation Radio remote control: Unlocking the
vehicle by pressing c deactivates the
anti-theft alarm system.