Page 17 of 271

In brief15ParkingNote
Do not allow the vehicle to remain in
extreme temperatures for long
periods without being driven or
being plugged in.9 Warning
● Always apply parking brake.
Pull switch m for approx.
1 second and check if the
control indicator m illuminates.
The electric parking brake is applied when control indicator
m illuminates 3 79.
● Switch off the vehicle.
● If the vehicle is on a level surface or uphill slope, apply
the parking brake and set the
selector lever to P before
switching off the vehicle. On an uphill slope, turn the front
wheels away from the kerb.
If the vehicle is on a downhill
slope, apply the parking brake
and set the selector lever to P
before switching off the vehicle.
Turn the front wheels towards
the kerb.
With the selector lever in P,
press POWER m briefly to
switch off the vehicle. Turn the
steering wheel until the
steering wheel lock engages.
● Lock the vehicle with ) on the
electronic key.
Activate the anti-theft alarm
system 3 30.
● The cooling fans may run after the vehicle has been switched off
3 211.
Keys, locks 3 16.
Laying-up the vehicle for a long period of time 3 210.
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16Keys, doors and windowsKeys, doors and
windowsKeys, locks ................................... 16
Keys .......................................... 16
Radio remote control .................17
Electronic key system ................19
Memorised settings ...................20
Central locking system ..............20
Delayed locking ......................... 25
Automatic locking ......................25
Child locks ................................. 26
Smartphone remote function .....27
Doors ........................................... 29
Load compartment ....................29
Vehicle security ............................ 29
Anti-theft locking system ...........29
Anti-theft alarm system ..............30
Immobiliser ................................ 31
Exterior mirrors ............................ 32
Convex shape ........................... 32
Electric adjustment ....................32
Folding mirrors .......................... 32
Heated mirrors ........................... 33
Interior mirrors ............................. 33
Automatic anti-dazzle ................33Windows...................................... 33
Windscreen ............................... 33
Power windows ......................... 34
Heated rear window ..................35
Sun visors .................................. 36Keys, 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 3 243.
Central locking 3 20.
Starting and stopping the vehicle 3 150.
Radio remote control 3 17.
Electronic key 3 19.
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.
Page 19 of 271

Keys, doors and windows17Radio remote control
Enables operation of the following
functions via the use of the remote control buttons on the electronic key:
● central locking system 3 20
● anti-theft locking system 3 29
● anti-theft alarm system 3 30
● remote start
The remote control has a range of up
to 60 m, but may also be much less
due to external influences. The
hazard warning flashers confirm
operation.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Remote start
Activates the heating or air
conditioning systems and the heated
rear window from outside the vehicle.
The climate control system will
typically default to the last climate
setting. If the fan is off or if fan only
was selected, the air conditioning or
heat will turn on as needed.
Electronic climate control system
3 141.
If the vehicle has heated seats and
the vehicle personalisation setting
enabled, the remote start auto heated seats may also come on.
Heated front seats 3 41.
Vehicle personalisation 3 90.
If the vehicle is low on electricity, do
not use the remote start feature. The
vehicle may run out of electricity.
The remote control range may be
reduced while the vehicle is running.Activating
1. Press and release ).
2. Immediately press and hold O
until the turn lights flash or for at
least 4 seconds. Pressing and
holding O again during remote
start will turn the feature off.
Remote start will automatically shut
off after 20 minutes, unless a time
extension is activated.
After entering the vehicle during
remote start, press POWERm on the
instrument panel with the brake pedal
depressed to operate as normal.
Extending the time
To extend the time by another
20 minutes, repeat the steps for
activating remote start. Remote start
can only be extended once.
Page 20 of 271

18Keys, doors and windowsCancelling remote start
To cancel remote start, do any of the
following:
● Aim the radio remote control at the vehicle and press and hold
O until the sidelights turn off.
● Turn on the hazard warning flashers.
● Press POWERm on the
instrument panel with the brake
pedal depressed, then press
POWER m again to switch off the
vehicle.
Conditions in which remote start will not work
● An open bonnet.
● Vehicle propulsion system fault conditions.
● High voltage battery fault conditions.
● The selector lever is not in P
(Park).Conditions in which remote start may be cancelled include:
● Vehicle propulsion system or high voltage battery fault
conditions.
● Electric drive unit coolant temperature is too high.
Replacing battery in the electronic key
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Press button at the back of the electronic key unit and extract thekey blade from the housing.
Page 21 of 271

Keys, doors and windows192. Insert the key blade for approx.6 mm and turn the key to open thehousing. 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
synchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control will be
synchronised when you switch on the
vehicle.
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 20.
Electronic key systemEnables a keyless operation of the
following functions:
● central locking system 3 20
● tailgate 3 29
● starting and stopping the vehicle 3 150
The electronic key simply needs to be on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control 3 17.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Note
Do not put the electronic key into the
load compartment or in front of the
Info Display.
Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly
or the range is reduced. The need for
battery replacement is indicated by a
message in the Driver Information
Centre 3 89.
Page 22 of 271

20Keys, doors and windowsBattery replacement in the electronic
key 3 17.
Electronic key synchronisation
The electronic key synchronises itself automatically during every starting
procedure.
Fault
If the central locking cannot be
operated or the propulsion system
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.
Manual unlocking 3 20.Memorised settings
Whenever the ignition is switched off, some functions of the following
settings may be automatically
memorised by the remote control unit
or the electronic key:
● automatic climate control
● lighting
● Infotainment system
● central locking system
● comfort settings
The saved settings are automatically
used the next time the vehicle is
switched on with the memorised
electronic key 3 19.
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.
Vehicle personalisation 3 90.Central locking system
Unlocks and locks doors and load
compartment.
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. A precondition is that the
setting is activated in the vehicle
personalisation 3 90.
Page 23 of 271

Keys, doors and windows21Remote control operationUnlocking
Press (.
Unlocking mode can be set in the vehicle personalisation menu in the
Info Display. Two settings are
selectable:
● All doors and load compartment will be unlocked by pressing
( once.
● Only the driver's door and load compartment will be unlocked by
pressing ( once. To unlock all
doors, press ( twice.
Select the relevant setting in Settings
I Vehicle settings in the Info Display.
Info Display 3 85.
Vehicle personalisation 3 90.
The setting can be saved for the remote control being used.
Memorised settings 3 20.
Unlocking and opening the tailgate 3 29.
Locking
Close doors and load compartment.
Press ).
If the driver's door is ajar, 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 90.
Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. 1 m of the relevant door side.
Page 24 of 271

22Keys, doors and windowsUnlocking
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 and load compartment will be unlocked by pressing thebutton on any exterior handle
once.
● Only the driver's door and load compartment 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 90.
Disabling keyless unlocking
Keyless unlocking of the doors and
load compartment can be disabled when the vehicle is switched off.
To disable keyless unlocking, press
and hold ) and ( at the same time
for approx. 3 seconds.
After disabling keyless unlocking, the
turn lights flash four times briefly. The
turn lights will flash four times again
when trying to open any door or the
tailgate to indicate that keyless
unlocking is disabled.
Note
When keyless unlocking is disabled, the anti-theft alarm system has to be
disarmed before starting the vehicle.
Enabling keyless unlocking
Keyless unlocking of the doors and
load compartment can be enabled
when the vehicle is switched off.To enable keyless unlocking, press
and hold ) and ( at the same time
for approx. 3 seconds.
After enabling keyless unlocking, the turn lights flash twice briefly.
Locking
Press the button on any exterior door
handle.
All doors and load compartment will
be locked.