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.
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.
