22Keys, doors and windowsExtend the key and open the unit.
Replace the battery (battery type
CR 2032), paying attention to the
installation position. Close the unit
and synchronise.
Radio remote control
synchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control is
synchronised when the ignition is
switched on.
Fault
If the central locking system cannot
be operated with the radio remote
control, it may be due to the following:
● 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.
Electronic key system
Enables a keyless operation of the
following functions:
● central locking system 3 24
● starting the engine 3 137
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 21.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Note
Do not put the electronic key in 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 3 103.
