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Keys, doors and windows23Notice
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
opened. A precondition is that the
setting is activated in the vehicle
personalisation 3 116.
Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
Unlocking
Press the button on the respective
exterior door handle and pull the
handle.
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 the button on any
exterior handle once.
● Only the driver's door, load compartment and fuel filler flap
will be unlocked by pressing the
button on the driver's door
exterior handle once. To unlock
all doors, press button twice.
The setting can be changed in the
menu Settings in the Info-Display.
Vehicle personalisation 3 116.
Locking
Press the button on any exterior door
handle.
All doors, load compartment and fuel
filler flap will be locked.
Page 26 of 301

24Keys, doors and windowsThe system locks if any of the
following occurs:
● It has been more than five seconds since unlocking.
● The button on an exterior handle has been pressed twice within
five seconds to unlock the
vehicle.
● 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.
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 via moving the foot below the rear bumper or by pushing
the touchpad switch under the brand
emblem when the electronic key is in
range. The doors remain locked.
Load compartment 3 27.Operation with buttons on the
electronic key
The central locking system can also
be operated with the buttons on the
electronic key.
Press c to unlock.
Press e to lock.
Electronic key system 3 20.
Passive locking
Automatic locking 3 26.
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 3 116.
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 e to lock. LED in button
illuminates.
Press c to unlock.
Page 27 of 301

Keys, doors and windows25Operation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or electronic key battery is
discharged, the driver's door can be
locked or unlocked with the
mechanical key.
The lock cylinder in the driver's door
is covered by a cap.
Electronic key: to remove the cap,
press button at the back and extract
the key blade from the housing. Insert
the key into the recess at the bottom
of the cap and swivel the key upward.
Electronic key system 3 20.
Manual unlocking
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 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.
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26Keys, doors and windows
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 lockingAutomatic 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 3 110.
Vehicle personalisation 3 116.
The setting can be saved for the
remote control or 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
short 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 3 110.Vehicle personalisation 3 116.
The setting can be saved for the
remote control or electronic key being used 3 22.
Passive locking
On vehicles with electronic key
system, 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.
Page 29 of 301
Keys, doors and windows27To 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 3 110.
Vehicle personalisation 3 116.
The setting can be saved for the
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.
Doors
Load compartment
Tailgate Opening
After unlocking, push the brand
emblem and open the tailgate.
Page 30 of 301

28Keys, doors and windowsClosing
Use the interior handle.
Central locking system 3 22.
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.
Notice
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.
Notice
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.
Page 31 of 301

Keys, doors and windows29Activating
Press e 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 the button on any exterior door
handle.
● Radio remote control or electronic 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 or sunroof, could impair the
function of passenger compartment
monitoring.
Page 32 of 301

30Keys, doors and windowsActivation 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 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.
Status 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 faultStatus after system is armed:LED flashes
slowly:system is armed
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.
Electronic key system: Unlocking the
vehicle by pressing the button on any
exterior door handle deactivates the
anti-theft alarm system.