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Keys, doors and windows23Fault
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 23.
Memorised settings
Whenever the ignition is switched off,
the following settings are
automatically memorised by the
remote control unit or the electronic
key:● automatic climate control
● lighting
● Infotainment system
● central locking system
● Sport mode settings
● comfort settings
The saved settings are automatically
used the next time the ignition is
switched on with the memorised key
of the remote control unit 3 139 or
electronic key 3 21.
A precondition is that Personalisation
by Driver is activated in the personal
settings of the Info-Display. This must
be set for each remote control unit or
electronic key which is used.
The settings of the driver's seat are
also memorised independent of the
memory positions 3 44.
The power seat automatically moves
into the saved position when
unlocking and opening the driver's
door with the memorised remote
control or electronic key and Auto
Memory Recall in the Info-Display is
activated.
Vehicle personalisation 3 106.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
opened. A precondition is that the
setting is activated in the vehicle
personalisation 3 106.
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24Keys, doors and windowsRemote control operationUnlocking
Press c.
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 c once.
● Only the driver's door, load compartment and fuel filler flap
will be unlocked by pressing c
once. To unlock all doors, press
c twice.
Select the relevant setting in Settings,
I Vehicle in the Info-Display.
Info-Display 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the
remote control being used.
Memorised settings 3 23.
Unlocking and opening the tailgate 3 29.
Locking
Close doors, load compartment and
fuel filler flap.
Press e.
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 3 106.
Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
Page 27 of 267

Keys, doors and windows25Unlocking
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 3 106.
Locking
Press the button on any exterior door
handle.
All doors, load compartment and fuel
filler flap will be locked.
The 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 and a
warning chime sounds three times.
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
switch under the brand emblem when the electronic key is in range. Thedoors remain locked.
Page 28 of 267

26Keys, doors and windowsOperation 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.
Remote control operation 3 23.
Passive locking
Automatic locking 3 27.
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 3 106.
Central locking buttons Locks or unlocks all doors, the load
compartment and fuel filler flap from
the passenger compartment by a
switch in the driver's door panel.
Press e to lock.
Press c to unlock.
Operation 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 empty, 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.Remote control: to remove the cap,
insert the key into the recess at the
bottom of the cap and swivel the key
upward.
Keys 3 19.
Page 29 of 267

Keys, doors and windows27Electronic 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 21.
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.
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.
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28Keys, doors and windowsWhen 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 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the remote control or electronic key being used 3 23.
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 3 102.Vehicle personalisation 3 106.
The setting can be saved for the
remote control or electronic key being used 3 23.
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 in the interior.
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.
Passive locking can be disabled by
pressing c for a few seconds while
one door is open. It remains disabled
until 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 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the remote control or electronic key being used 3 23.
Child locks
Page 31 of 267
Keys, doors and windows299Warning
Use the child locks whenever
children are occupying the rear
seats.
Move the pin in the rear door to the front. The door cannot be openedfrom the inside.
To deactivate, move the pin to the
rear position.
Doors
Load compartment
Tailgate Opening
After unlocking, push the touchpad
switch under the brand emblem and
open the tailgate.
Central locking system 3 23.
Closing
Use one of the interior handles.
Do not push the touchpad switch whilst closing as this will unlock the
tailgate again.
Central locking system 3 23.
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
Page 32 of 267

30Keys, doors and windowsgases, 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.
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.
If the ignition was on, the driver's door
must be opened and closed once so
that the vehicle can be secured.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button.
Activating
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