Page 36 of 189

34Keys, doors and windows
Press electronic key button e to
activate the anti-theft alarm system.
Electronic key system 3 21.
Deactivation
Unlocking the vehicle (with button c
or the button on any exterior door handle) or switching on the ignition
deactivates the anti-theft alarm
system. Hazard warning lights flash to confirm deactivation.
The system is not deactivated when
unlocking the driver's door with the
key or with the central locking switch
in the passenger compartment.
Notice
If the alarm has been triggered,
unlocking the vehicle with the key
will not stop the alarm siren. To stop the siren, switch on the ignition. The
hazard warning lights will not flash
upon deactivation if the alarm has
been triggered.Activation without monitoring of
passenger compartment
Disable monitoring of the passenger
compartment, e.g. when animals are
being left in the vehicle, or if the
auxiliary heater has been set for a
timed or remote controlled start
3 102.
Press and hold button e on the
remote control or electronic key; an
audible signal will sound as
confirmation.
The status will remain until the doors
are unlocked.
AlarmWhen triggered, the alarm sounds via
a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals are stipulated by legislation.
If the vehicle battery is disconnected
or its power supply is interrupted, the
alarm siren will be triggered. First
deactivate the anti-theft alarm system
if the vehicle battery must be
disconnected.To silence the alarm siren (if
triggered) and therefore deactivate
the anti-theft alarm system, reconnect vehicle battery and unlock the vehicle
or switch on the ignition.
Immobiliser
The immobiliser is part of the ignition
switch and checks whether the
vehicle is allowed to be started with
the key being used.
The immobiliser is activated
automatically after the key has been removed from the ignition switch and
also if the key is left in the ignition
switch when the engine is turned off.
If the engine cannot be started, switch off the ignition and remove key, wait
approx. 2 seconds and then repeat
the start attempt. If start attempt is
unsuccessful, attempt to start the
engine using the spare key and seek
the assistance of a workshop.
Page 104 of 189

102Climate control
Rear air conditioning fan switch
The rear air conditioning fan assists
air flow to the rear passenger
compartment via the rear air vents.
Switch on the fan while the air
conditioning system is operating to
allow cooled and dehumidified (dried) air to be distributed.
The rate of air flow is determined by
the fan.
Auxiliary heater
Coolant heater The Eberspächer engine-
independent, fuel-powered coolant
heater provides rapid heating of the
engine coolant to enable heating of
the vehicle interior without the engine
running.Caution
Do not touch the exhaust pipe. It
may be hot even after the engine
has been switched off, due to
coolant heater operation.
Before starting or programming the
system to start, turn the vehicle's
climate control system to heat and the
air distribution to V.
9Warning
Do not operate the system when
refuelling, when dust or
combustible vapours are present
or in enclosed spaces (e.g.
garage).
Switch off when not required. Heating stops automatically after the
programmed runtime. It will also
cease to operate if the vehicle fuel
level drops too low.
During operation, power from the
vehicle battery is used. The driving
time should therefore be at least as
long as the heating time. For short
journey times, check the vehicle
battery regularly and recharge if
necessary.
To ensure efficient performance,
briefly operate the auxiliary heater
once a month.
Control units The timer or remote control unit turns
the system on and off, and is used to
programme specific departure times.
Page 184 of 189

182IndexAAccessories and vehicle modifications .......................... 131
Adjustable air vents ...................106
Airbag and belt tensioners ...........81
Airbag deactivation ................55, 81
Airbag label................................... 50 Airbag system .............................. 50
Air conditioning regular operation ................................ 107
Air conditioning system ................ 98
Air intake .................................... 107
Air vents...................................... 106
Alert .............................................. 87
Antifreeze ................................... 135
Antilock brake system ................ 117
Antilock brake system (ABS) .......83
Anti-theft alarm system ................33
Anti-theft locking system .............. 31
Anti-theft security lock ..................23
Appearance care ........................162
Armrest ........................................ 43
Ashtrays ....................................... 76
Automatic anti-dazzle ..................37
Automatic fuel cut-off ..................112
Automatic light control .................91
Automatic locking ........................28
Autostop ....................................... 85
Auxiliary heater ........................... 102B
Battery, jump starting.................. 159
Belts.............................................. 47
Bonnet ....................................... 132
Brake and clutch fluid .................166
Brake assist ............................... 118
Brake fluid .................................. 136
Brakes ............................... 117, 136
Brake system ............................... 83
Breakdown.................................. 161
Bulb replacement ....................... 139
C Capacities .................................. 177
Car Pass ...................................... 19
Catalytic converter .....................115
Central locking system ................23
Centre high-mounted brake light 141
Changing tyre and wheel size ...153
Charging system .......................... 82
Child locks ................................... 28
Child restraint installation locations ................................... 58
Child restraints.............................. 56
Child restraint systems ................56
Cigarette lighter ........................... 75
Cleaning the vehicle ...................162
Climate control ............................. 15
Climate control systems ...............97