20Keys, doors and windowsKeys, doors and
windowsKeys, locks ................................... 20
Keys .......................................... 20
Radio remote control .................21
Electronic key system ................22
Memorised settings ...................25
Central locking system ..............25
Automatic locking ......................27
Child locks ................................. 28
Doors ........................................... 28
Load compartment ....................28
Vehicle security ............................ 34
Anti-theft locking system ...........34
Anti-theft alarm system ..............34
Immobiliser ................................ 36
Exterior mirrors ............................ 37
Convex shape ........................... 37
Electric adjustment ....................37
Folding mirrors .......................... 37
Heated mirrors ........................... 38
Automatic dimming ....................38
Parking assist ............................ 39Interior mirrors............................. 39
Manual anti-dazzle ....................39
Automatic anti-dazzle ................39
Windows ...................................... 40
Windscreen ............................... 40
Power windows ......................... 40
Heated rear window ..................42
Heated windscreen ....................42
Sun visors .................................. 42
Roof ............................................. 43
Sunroof ...................................... 43Keys, locks
Keys Replacement keys
The key number is specified on a
detachable tag.
The key number must be quoted
when ordering replacement keys as it
is a component of the immobiliser system.
Locks 3 281, Central locking 3 25,
Starting the engine 3 165.
Radio remote control 3 21.
Electronic key 3 22.
The code number of the adapter for
the locking wheel nuts is specified on
a card. It must be quoted when
ordering a replacement adapter.
Wheel changing 3 274.
Replacing battery Replace the battery as soon as the
system no longer operates properly
or the range is reduced. The need for
Keys, doors and windows21battery replacement is indicated by a
message in the Driver Information
Centre 3 125.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
To replace:
1. Press button at the back of the electronic key unit and extract thekey blade from the housing.
2. Insert the key blade again for approx. 6 mm and turn the key to
open the housing. Further
insertion of the key blade can
damage the housing.
3. Remove and replace battery. Use
CR 2032 or equivalent battery.
Pay attention to the installation
position.
4. Close the housing and insert key blade.
Radio remote control
Enables operation of the following
functions via the use of the remote control buttons:
● central locking system 3 25
● anti-theft locking system 3 34
● anti-theft alarm system 3 34
● power windows 3 40
● sunroof 3 43
The remote control has a range of up
to 100 metres , but may also be much
less due to external influences. The
hazard warning flashers confirm
operation.
22Keys, doors and windowsHandle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
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.
● The range is exceeded.
● The battery voltage is too low.
● Frequent, repeated operation of the radio remote control while notin range, which will require re-
synchronisation.
● 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.
Manual unlocking 3 25.Electronic key system
Enables a keyless operation of the
following functions:
● central locking system 3 25
● switching on ignition and starting the engine 3 165
The electronic key simply needs to be on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control:
● central locking system
● anti-theft alarm system
● power windows
The hazard warning flashers confirm
operation.
Handle the device with care, protect
from moisture and high temperatures
and avoid unnecessary operation.
Note
Do not put the electronic key in the
load compartment.
Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx.
one metre of the relevant door side.
24Keys, doors and windowsOperation with buttons on the
electronic key
The central locking system can also
be operated with the buttons on the
electronic key.
Unlocking
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 and fuel filler flap will be unlocked by
pressing c once. To unlock all
doors and load compartment,
press c twice.
Select the relevant setting in Settings,
I Vehicle in the Info Display.
Info-Display 3 121.
Vehicle personalisation 3 127.
The setting can be saved for the key
being used. Memorised settings
3 25.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.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 3 127.
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.
Keys, doors and windows25Manual unlocking 3 25.
Memorised settings
Whenever the ignition is switched off, the following settings are
automatically memorised by 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
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 electronic key which is used. The status change is available
only after locking and unlocking the
vehicle.
The assigned memory position of the
power seat is automatically recalled
when switching on ignition and AutoMemory Recall is activated in the
Info-Display for the memorised
electronic key.
Power seat 3 50.
Vehicle personalisation 3 127.
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
electronic key, the doors are being
locked automatically if no door has
been opened. A precondition is that
the setting is activated in the vehicle
personalisation 3 127.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.
Operation 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 key blade.
Keys, doors and windows33If the vehicle is equipped with factory-
fitted towing equipment and a trailer
is electrically connected, the power
tailgate can only be operated
manually. Press the touchpad to
release the tailgate from its lock, open
and close it by hand. 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.
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.
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 be 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.
36Keys, doors and windowsDeactivation
Unlocking the vehicle by pressing the
button on any exterior door handle
deactivates the anti-theft alarm
system.
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
The system is not deactivated by
unlocking the driver's door with the
key or with the central locking button
in the passenger compartment.
Alarm
When triggered, the alarm horn
sounds and the hazard warning lights
flash simultaneously. The number
and duration of alarm signals are
stipulated by legislation.
The anti-theft alarm system can be
deactivated by pressing c, by
pressing the switch on the door
handle with electronic key system or
switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
unlocked with the electronic key.
Additionally, a warning message is
displayed in the Driver Information Centre after switching on the ignition.
Vehicle messages 3 125.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.Immobiliser
The immobiliser is activated
automatically.
If the control indicator d flashes when
the ignition is on, there is a fault in the system; the engine cannot be started.
Switch off the ignition and repeat the
start attempt. Retry with the key in the transmitter pocket. Operation on
vehicles with electronic key system in case of failure 3 164.
If the control indicator d continues
flashing, attempt to start the engine using the spare key.
Seek the assistance of a workshop.
Note
Radio Frequency Identification
(RFID) tags may cause interference
with the key. Do not have it placed
near the key when starting the
vehicle.
42Keys, doors and windowsInitialising the power windowsIf the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message is displayed in the
Driver Information Centre.
Vehicle messages 3 125.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on ignition.
3. Pull the switch until the window is closed and keep pulling for
additional two seconds.
4. Push the switch until the window is completely open and keep
pushing for additional
two seconds.
5. Repeat for each window.Heated rear window
Operated by pressing b together with
heated exterior mirrors. LED in button illuminates.
Heating works with the engine
running and is switched off
automatically after a short time.
Heated windscreen
Operated by pressing ,. LED in
button illuminates.
Heating works with the engine
running and is switched off
automatically after a short time.
Pressing , once more during the
same ignition cycle allows the heating to operate for another three minutes.
Sun visors The sun visors can be folded down or
swivelled to the side to prevent
dazzling.