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Keys, doors and windows27Operation 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 lockingof the doors and tailgate as soon as
the speed of the vehicle exceeds a
certain speed.
Page 30 of 271

28Keys, doors and windowsIf one of the doors or the tailgate 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 cluster, an audible
signal and the display of an alert
message.
This function can be activated or
deactivated at any time. 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.
Mechanical child locks
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 31 of 271
Keys, doors and windows29Electric child locks
Remotely operated system to prevent
opening of the rear doors via the
interior door handles and the use of
the rear power windows.
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 tailgate
button and open the tailgate.
Page 32 of 271

30Keys, doors and windowsClosing
Use the interior handle.
Do not push the touchpad switch
whilst closing as this will unlock the
tailgate again.
Central locking system 3 23.
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.
● Hands-free operation with motion
sensor below the rear bumper.
● The tailgate button and T 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 tailgate button or via hands-free
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.
1 m 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 23.
Operation with the electronic key
Press P longer to open or close the
tailgate.
Page 33 of 271

Keys, doors and windows31Hands-free 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 number plate. The key must be within a range of 1 m. 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.
1 m of the tailgate.
Activation or deactivation of hands-
free operation can be set in the menu
Settings I Vehicle in the Info Display.
Info Display 3 102.
Vehicle personalisation 3 105.
9 Danger
Do not touch any vehicle parts
below the vehicle during hands-
free operation. There is a risk of
injury from hot engine parts.
Automatic locking after hands-free
operation
Press button S in the open tailgate,
the whole vehicle will be locked after hands-free closing of the tailgate.
Operation with the tailgate button
To open the tailgate, press the
tailgate button until the tailgate starts
to move. If the vehicle is locked, the
electronic key must be outside the
vehicle, within a range of approx.
1 m of the tailgate.
Page 35 of 271

Keys, doors and windows33Remove 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
tailgate button 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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34Keys, doors and windowsVehicle 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 5 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 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 37 of 271

Keys, doors and windows35
● Radio remote control orelectronic 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, 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
10 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.