38Keys, doors and windowsActivation 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
3 119.
Press and hold e on the remote
control or electronic key; an audible signal will sound as confirmation.
The status will remain until the doors
are unlocked.
Alarm When 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. two 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.Notice
Radio Frequency Identification
(RFID) tags may cause interference with the key. Do not have it placednear the key when starting the
vehicle.
Notice
The immobiliser does not lock the doors. You should always lock the
vehicle after leaving it and switch on
the anti-theft alarm system 3 24,
3 36.
Climate control119Rear 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 engine-independent, fuel-
powered coolant heater provides
rapid heating of the engine coolant to
enable heating of the vehicle interior
without the engine running.9 Warning
Do not operate the system when
refuelling, when dust or
combustible vapours are present
or in enclosed spaces (e.g.
garage).
Before starting or programming the
system to start, turn the vehicle's
climate control system to heat, set the
air distribution to V and turn the fan
on.
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.
122Climate controlManual control
Depending on version, the auxiliary
heater can also be switched on for the
last duration time or the default
duration 30 minutes, or cut-off
immediately, using the button on the
lower part of the instrument panel,
beside the steering wheel.
The LED in the button confirms
operation.
Battery replacement
Replace the battery when the range
of the remote control is reduced or when the battery charge symbol
flashes.
Open the cover and replace the
battery (Type A: CR 2430, Type B: 2CR 11108, or equivalent), ensuring
the new battery is correctly installed
with the positive ( <) side facing the
positive terminals. Replace the cover
securely.
Dispose of old batteries in
accordance with environmental
regulations.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Operation (Type A)
Heating Y
Select Y in the menu bar and press
G to confirm. The predetermined
heating duration, e.g. L 30, flashes in
the display. The factory setting is 30 minutes.
Adjust the heating duration using k
or l and confirm. The value can be
set from ten to 120 minutes. Due to
the power consumption, note the
heating duration.
To switch off, select Y in the menu bar
again and press d.
Ventilation x
Select x in the menu bar and press
G to confirm.
Adjust the ventilation duration using k or l and confirm. The value can
be set from ten to 120 minutes. Due
to the power consumption, note the
heating duration.
To switch off, select x in the menu bar
again and press d.
Programming P
Up to three preset departure times
can be programmed, either during
one day or over one week.
● Select P in the menu bar and
press G to confirm.
● Select desired preset memory number P1, P2 or P3 and
confirm.
170Vehicle care● See the Owner's Manual forfurther information.
● Explosive gas may be present in the vicinity of the battery.
Additional battery Depending on the vehicle's auxiliary
equipment, certain models may have
an additional battery located under
the front passenger seat.
Notice
The additional battery is
automatically connected to the main vehicle battery only when the engine
is running. It does not need to be manually disconnected before
disconnecting the main vehicle
battery or before jump starting the
vehicle.
Jump starting 3 194.
Diesel fuel filter
The diesel fuel filter is accessible from the underside of the vehicle.
Drain filter of residual water at every
engine oil change.
Place a container underneath the
filter housing. Loosen the knurled screw on the lower part of the filter by
approx. one turn, to drain off the
water.
The filter is drained as soon as water- free diesel fuel emerges. Retighten
the screw.
Check diesel fuel filter at shorter
intervals if the vehicle is subjected to
extreme operating conditions.
Diesel fuel system bleeding
If the fuel tank has been run dry, it will be necessary to air vent or bleed the
diesel fuel system.
Refuel then proceed as follows:
With ignition key
● Switch on the ignition (key to position 2) for five seconds at a
time.
● Switch off ignition (key to position
1 ) for three seconds.
222IndexAAbsorptive Glass Mat battery .....168
Accessories and vehicle modifications .......................... 162
Adaptive forward lighting ...........108
AdBlue .................. 98, 103, 137, 201
AdBlue tank ................................ 215
Adjustable air vents ...................125
AGM battery ............................... 168
Airbag and belt tensioners ...........95
Airbag deactivation ................62, 95
Airbag label............................. 57, 62
Airbag system .............................. 57
Air conditioning regular operation ................................ 126
Air conditioning system .............. 115
Air intake .................................... 126
Air recirculation ...................115, 195
Air vents...................................... 125
Alert ............................................ 102
Antifreeze ................................... 166
Antilock brake system ................ 144
Antilock brake system (ABS) .......97
Anti-theft alarm system ................36
Anti-theft bolts............................. 191
Anti-theft locking system .............. 35
Anti-theft security lock ..................24
Appearance care ........................197
Armrest ........................................ 48
Ashtrays ....................................... 88Automatic anti-dazzle ..................41
Automatic fuel cut-off ..................132
Automatic light control ...............107
Automatic locking ........................30
Autostop ............................. 131, 133
Auxiliary heater ........................... 119
B Battery ........................................ 168
Battery discharge protection ......113
Battery, jump starting.................. 194
Belts.............................................. 53 Bench seat.................................... 74
BlueInjection ............................... 137
Bonnet ....................................... 163
Bottle holders................................ 74
Brake and clutch fluid .................201
Brake assist ............................... 145
Brake fluid .................................. 167
Brakes ............................... 144, 167
Brake system ............................... 96
Breakdown.................................. 195 Bulb replacement ....................... 172
C
Capacities .................................. 215
Car Pass ...................................... 20
Catalytic converter .....................137
Central locking system ................24
Centre high-mounted brake light 174
Changing tyre and wheel size ...187