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28Keys, doors and windowsThe system locks if any of the
following occurs:
● It has been more than 5 seconds since unlocking.
● The button on an exterior handle has been pressed twice within
3 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 hands-free via moving the
foot below the rear bumper or by
pushing the tailgate button under the
brand emblem when the electronic
key is in range. The doors remain
locked.
Load compartment 3 32.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.
Press X twice to unlock and open
only the power tailgate. To prevent
unintended opening of the tailgate,
X must be pressed longer than
during locking or unlocking.
Remote control operation 3 25.
Passive locking
Automatic locking 3 30.
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 3 124.
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.
Press c to unlock.
Page 31 of 305

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.
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 21.
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 23.
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.
Page 32 of 305

30Keys, doors and windowsManual 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.
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 3 121.
Vehicle personalisation 3 124.
The setting can be saved for the remote control or electronic key being used 3 25.
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 3 121.
Page 33 of 305

Keys, doors and windows31Vehicle personalisation 3 124.
The setting can be saved for the
remote control or electronic key being
used 3 25.
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.To 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 functionremains 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 3 121.
Vehicle personalisation 3 124.
The setting can be saved for the
electronic key being used 3 25.Child locks9 Warning
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.
Page 34 of 305
32Keys, doors and windowsDoors
Load compartment Tailgate
Opening5-door Hatchback
After unlocking, push the tailgate
button under the brand emblem and
open the tailgate.
Sports Tourer
After unlocking, push the tailgate
button under the tailgate moulding
and open the tailgate manually.
Central locking system 3 25.
Closing
Use one of the interior handles.
Do not push the tailgate button whilst
closing as this will unlock the tailgate
again.
Central locking system 3 25.
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Keys, doors and windows33Power tailgate9Warning
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 X twice on the
electronic key. To prevent
unintended opening of the
tailgate, X must be pressed
longer than during locking or unlocking.
● Hands-free operation with motion
sensor below the rear bumper.
● The tailgate button under the exterior tailgate moulding andC in the open tailgate.
● The switch C on the inside of
the driver's door.
On vehicles with automatic
transmission, the tailgate can only be operated when the vehicle is
stationary and with selector lever in P.
The turn lights flash and a chime sounds when the power tailgate is
operating.
Note
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 25.Operation with the electronic key
Press X twice to open or close the
tailgate. To prevent unintended
opening of the tailgate, X must be
pressed longer than during locking or unlocking.
Page 36 of 305
34Keys, doors and windowsHands-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 shown in the illustration. If equipped with parking
assist, the area is recognisable below
the sensor shown. 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.
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.
Operation with the tailgate button
under the exterior tailgate moulding
To open the tailgate, press the
tailgate button under the tailgate
moulding 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.
To close, press C in the open
tailgate until the tailgate starts to
move.
Page 39 of 305

Keys, doors and windows37the 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
The operation of the power tailgate
is disabled under low vehicle battery
conditions. In this case, the tailgate
may not even by manually operable.
Note
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.
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.
Activating
Press e on the radio remote control
twice within 5 seconds.
Anti-theft alarm system
The anti-theft alarm system is
combined with the anti-theft locking
system.
It monitors: ● doors, tailgate, bonnet
● passenger compartment including adjoining load
compartment