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Keys, doors and windows23
FaultIf 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 out of reception range
■ Battery voltage 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 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
with remote control unit 3 149 or
electronic key 3 22.
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.
Also memorised are the adjustments
of the driver's seat and exterior
mirrors, independent of the memory
positions 3 50.
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 3 118.
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.
Note
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.
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24Keys, doors and windows
Remote control operationUnlocking
Press button c.
Unlocking mode can be set in the
vehicle personalisation menu in the
Colour-Info-Display. It can be
configured as follows:
■ all doors, load compartment and fuel filler flap are unlocked by
pressing button c once,
or
■ only the driver's door, load compartment and fuel filler flap are
unlocked by pressing button c
once. To unlock all doors, press
button c twice.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 114.
Vehicle personalisation 3 118.
The setting can be saved for the remote control being used.
Memorised settings 3 23.
Locking
Close doors, load compartment and
fuel filler flap.
Press button e.
If the driver's door is not closed properly, the central locking system
will not work.
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Keys, doors and windows25
Unlocking and opening the tailgate4-door Saloon, Country Tourer,
Sports Tourer with power tailgate
Press button x when the ignition is
off until tailgate opens automatically.
The doors remain locked.
Power tailgate 3 29.
Confirmation
Operation of central locking system is
confirmed by the hazard warning
flashers.
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 any exterior door
handle and pull the handle.
Unlocking mode can be set in the
vehicle personalisation menu in the
Colour-Info-Display. It can be
configured as follows:
■ all doors, load compartment and fuel filler flap are unlocked by
pressing a button on any exterior
handle once,
or
■ only the driver's door, load compartment and fuel filler flap are
unlocked by pressing the button on driver`s door exterior handle once.To unlock all doors, press buttontwice.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 114.
Vehicle personalisation 3 118.
The setting can be saved for the
electronic key being used.
Memorised settings 3 23.
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26Keys, doors and windows
Locking
Press the button on any exterior door
handle.
All doors, load compartment and fuel
filler flap are locked.
The system only locks if ■ it has been more than 5 seconds since unlocking, or
■ twice unlocking presses have been
within 5 seconds, or
■ any door has been opened and then all doors are closed.
If the driver's door is not closed
properly or the electronic key remains in the vehicle and the ignition is not
off, locking will not be permitted and a warning tone 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 and the doors can be
unlocked by pressing the button
under the tailgate moulding when
electronic key is in range.
Passive Locking
See Automatic locking 3 27.
Confirmation
Operation of central locking system is
confirmed by the hazard warning
flashers.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 the e button to lock.
Press the c button to unlock.
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Keys, doors and windows27
Fault in radio remote control unitor electronic key system
Manual unlocking
Manually unlock the driver's door by
turning the key in the lock. Switch on
the ignition and press the central
locking button c to unlock all doors,
load compartment and fuel filler flap.
By switching on the ignition, the anti-
theft locking system is deactivated.
Manual locking
Manually lock the driver's door by
turning the key in the lock.
Fault in central locking system
Manual unlocking
Manually unlock the driver's door by
turning the key in the lock. The other
doors can be opened by pulling the
interior handle twice. The load
compartment and fuel filler flap
cannot be opened. To deactivate the
anti-theft locking system, switch on
the ignition 3 34.
Manual locking
Push inside locking knob of all doors
except driver's door. Then close the driver's door and lock it from the
outside with the key. The fuel filler flap and tailgate cannot be locked.
Automatic locking
Automatic 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
Colour-Info-Display.
Colour-Info-Display 3 114.
Vehicle personalisation 3 118.
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
Colour-Info-Display.
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28Keys, doors and windows
Colour-Info-Display 3 114.
Vehicle personalisation 3 118.
The setting can be saved for the
remote control or electronic key being used 3 23.
Passive locking
In vehicles with electronic key
system, this feature locks the vehicle
automatically after several seconds if a electronic key previously was
recognised 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
and a warning tone sounds three
times.
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 Colour-Info-
Display.
Colour-Info-Display 3 114.
Vehicle personalisation 3 118.
The setting can be saved for the
remote control or electronic key being used 3 23.Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Using a key or suitable screwdriver,
turn the child lock in the rear door to
the horizontal position. The door
cannot be opened from the inside. For
deactivation turn the child lock to the
vertical position.
Page 31 of 321
Keys, doors and windows29DoorsLoad compartment
Tailgate
Opening
5-door Hatchback, Sports Tourer,
Country Tourer
After unlocking, press the button
under the tailgate moulding and open
the tailgate manually.
4-door Saloon
Press button x on radio remote
control until the tailgate is opened
automatically, or press the button
under the tailgate moulding after
unlocking.
Central locking system 3 23.
Closing
Use the interior handle.
Do not pull the button under the
moulding whilst closing as this will unlock the tailgate again.
Central locking system 3 23.
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30Keys, doors and windows
Power 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 is operated by:
■ Radio remote control button x
■ Switch G in the door panel of the
driver's door
■ Touchpad switch and button G in
the tailgate.
On vehicles with automatic
transmission, the tailgate can only be
operated when the vehicle is
stationary and automatic
transmission in P.
The tail 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 remote control, it is not necessary to unlock the vehicle. Unlock the
vehicle first when operating with the
touchpad switch or the switch in the
driver's door. Lock the vehicle after
closing.
Central locking system 3 23.
Operation with radio remote controlPress and hold button x until the
tailgate starts to open or close.
Operation with the switch in the
driver's door
Press and hold button G until the
tailgate starts to open or close.