Keys, doors and windows23
1. Remove the back cover from theremote control.
2. Extract the flat battery from its location.
3. Replace battery with a battery of the same type. Pay attention to
the installation position.
4. Clip the back cover in place.
Fault
If the central locking system cannot
be operated with the radio remote
control, the cause may be one of the
following:
● Fault in radio remote control.● 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.
Manual unlocking 3 24.Electronic key system
Enables a keyless operation of the
following functions:
● central locking system 3 24
● power tailgate 3 30
● ignition switching on and starting the engine 3 137
The electronic key simply needs to be on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control 3 22.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
24Keys, doors and windowsReplacing 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 3 103.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the cover.
2. Extract the flat battery from its location.
3. Replace battery with a battery of the same type. Pay attention to
the installation position.
4. 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 frequent
intervals, 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 24.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks the respective door. Pulling
the handle once more opens the door.
Notice
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Notice
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
Keys, doors and windows25opened. A precondition is that the
setting is activated in the vehicle
personalisation 3 104.
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, load compartment and fuel filler flap
will be unlocked by pressing O
once. To unlock all doors, press O twice.
Select the relevant setting in the Vehicle personalisation.
Vehicle personalisation 3 104.
Unlocking the tailgate
Press P longer to unlock the
tailgate only.
Unlocking and opening the tailgate
3 30.
Locking
Close doors, load compartment and
fuel filler flap.
Press N.
If the driver's 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. A precondition is
that the setting is activated in the
vehicle personalisation 3 104.
26Keys, doors and windowsElectronic 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 the door
handle of one of the front doors to
unlock the vehicle or press the
tailgate opening control.
Keep the hand behind the door
handle or keep the tailgate opening control pressed to open the windows.
Unlocking mode can be set in the
vehicle personalisation menu in the
Info-Display. Two 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 the
passenger's door handle or by
pressing the tailgate opening
control.
● Only the tailgate will be unlocked
by pressing the tailgate
touchpad.
Vehicle personalisation 3 104
Locking
Press with a finger or thumb on one
of the door handles (at the markings)
or press the tailgate touchpad.
Keys, doors and windows27All doors, load compartment and fuel
filler flap will be locked.
The 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 handsfree by pushing the touchpad switch under the tailgate
moulding when the electronic key is in
range. The doors remain locked.
Load compartment 3 30.Operation 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.
Press N to lock.
Press P longer to unlock and open
only the power tailgate.
Remote control operation 3 24.
Confirmation
Operation of central locking system is
confirmed by the hazard warning
flashers. A precondition is that the
setting is activated in the vehicle
personalisation 3 104.
Central locking buttons Locks or unlocks all doors, the load
compartment and fuel filler flap from
the passenger compartment via a
switch in the driver's door panel.
Press Q to lock. The LED in the button
illuminates.
Press Q again to unlock. The LED in
the button extinguishes.
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.
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.
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.