Page 27 of 257

Keys, doors and windows25Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly or the range is reduced. The need for battery replacement is indicated by a
message in the Driver Information
Centre 3 102.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. To unclip the cover insert a small screwdriver in the cutout.
2. Remove the cover.
3. Extract the flat battery from its location.
4. Replace battery with a battery of the same type. Pay attention to
the installation position.
5. Clip the cover in place.
Fault
If the central locking cannot be operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low.
● Overload of the central locking system by operating at frequentintervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 25.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
Pull an interior door handle fully to
unlock and open the respective door.
Page 28 of 257

26Keys, doors and windowsNote
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Note
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
opened.
Remote control operation
Unlocking
Press O.
Unlocking mode can be set in the
vehicle personalisation menu in the
Info-Display. Two settings are
selectable:
● All doors, load compartment and fuel filler flap will be unlocked by
pressing O once.
● Only the driver's door and fuel filler flap will be unlocked by
pressing O once. To unlock all
doors and load compartment,
press O twice.
Select the relevant setting in the
Vehicle personalisation.
Vehicle personalisation 3 103.
Unlocking the tailgate
Press P longer to unlock the
tailgate only.
Unlocking and opening the tailgate
3 31.
Locking
Close doors, load compartment and
fuel filler flap.
Press N.
If a door is not closed properly, the
central locking system will not work.
Confirmation
Operation of the central locking
system is confirmed by the hazard
warning flashers.
Page 29 of 257
Keys, doors and windows27Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
Unlocking
Pass your hand behind any door
handle to unlock the vehicle or press
the tailgate touchpad.
Unlocking mode can be set in the
vehicle personalisation. Three
settings are selectable:
● Only the driver's door will be unlocked by passing your hand
behind the driver's door handle.
● All doors, load compartment and fuel filler flap will be unlocked by
passing your hand behind any of
the door handles or by pressing
the tailgate touchpad.
● Only the tailgate will be unlocked
by pressing the tailgate
touchpad.
Vehicle personalisation 3 103
Locking
Press with a finger or thumb on one
of the door handles (at the markings)
or press the tailgate touchpad.
All doors, load compartment and fuel
filler flap will be locked.
Page 30 of 257

28Keys, doors and windowsThe system locks if any door has
been opened and all doors are now
closed.
If the driver's door is not closed
properly, the electronic key remains in the vehicle or the ignition is not off,
locking will not be permitted and a
warning chime sounds.
If there have been two or more
electronic keys in the vehicle and the
ignition was on once, the doors will be locked even if just one electronic key
is taken out of the vehicle.
Unlocking and opening the tailgate
The tailgate can be unlocked and
opened by pushing the touchpad
under the tailgate moulding when the
electronic key is in range. The doors
remain locked depending on the
configuration in the vehicle
personalisation.
Load compartment 3 31
Vehicle personalisation 3 103Operation with buttons on the
electronic key
The central locking system can also
be operated with the buttons on the
electronic key.
Press O to unlock the driver's door
and the fuel filler flap or all doors, the fuel filler flap and the tailgate.
Press N to lock the driver's door and
the fuel filler flap or all doors, the fuel
filler flap and the tailgate.
Press P longer to unlock and open
only the tailgate or all doors, the fuel
filler flap and the tailgate.
Remote control operation 3 25.
Confirmation
Operation of central locking system is
confirmed by the hazard warning
flashers.
Central locking buttonsLocks or unlocks all doors, the load
compartment and fuel filler flap from
the passenger compartment via a
switch.
Press Q to lock. The LED in the button
illuminates.
Press Q again to unlock. The LED in
the button extinguishes.
Page 31 of 257

Keys, doors and windows29Operation 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, first remove
the black cover by inserting a key and turning clockwise.
Insert key into the recess and move
latch sideways.
Remove key and attach the black
cover.
The fuel filler flap and tailgate are
possibly not locked.
Automatic locking Automatic locking after driving off This system allows automatic locking
of the doors as soon as the speed of
the vehicle exceeds 10 km/h.
Page 32 of 257

30Keys, doors and windowsIf 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.
Mechanical child locks
Turn the red child lock in the rear
doors 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 33 of 257
Keys, doors and windows31Electric child locks
Remotely operated system to prevent
opening of the rear doors using their
interior controls and use of the rear
electric windows.
Switching on
Press Ô. 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 Ô 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 above the licence plate and
open the tailgate.
Page 34 of 257

32Keys, 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 25.
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
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.
Note
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.
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.