34Keys, doors and windowsIf the hazard warning lights do not
flash upon activation, a door or the
bonnet is not fully closed.
Note
Changes to the vehicle interior, e.g.
the use of seat covers, and open
windows, could impair the function
of passenger compartment
monitoring.
Deactivation
Unlocking the vehicle or switching on
the ignition deactivates the anti-theft
alarm system. Hazard warning lights
flash once to confirm deactivation.
Note
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
Switch off monitoring of the
passenger compartment when
people or animals are being left in thevehicle, or if the auxiliary heater
3 119 is set for a timed or remote
controlled start.
Depending on vehicle configuration:
● press and hold e, or
● switch ignition on and off twice quickly, then close doors and
activate the anti-theft alarm
system
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 vehicle
with remote control button c (or
switch on the ignition).
Immobiliser
The system is part of the ignition
switch and checks whether the
vehicle is allowed to be started with
the key being used.
178Vehicle caredisconnecting the main vehicle
battery or before jump starting the vehicle.
Jump starting 3 206.
Diesel fuel filter
Drain diesel fuel filter of residual
water at every engine oil change.
Place a container underneath the
filter housing. Loosen the knurled
screws on the filter cover and on the
lower part of the filter by approx. one
turn, to drain off the water.
The filter is drained as soon as diesel fuel emerges from the knurled screw
at the bottom. Retighten the two
screws.
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.
Fill the tank with fuel and proceed as
follows:
1. Place a suitable container underneath the fuel filter vent
screw to collect fuel.
2. Loosen the vent screw (arrowed) by one turn.
3. Manually operate the in-line supply pump slowly and steadily
until fuel discharging from the
loosened vent screw is free of air
bubbles.
4. Retighten the vent screw.
In vehicles without an in-line supply
pump, fill the tank with fuel and
proceed as follows:Caution
Do not turn ignition key to position 3 before beginning the bleeding
procedure.
Ignition switch positions 3 130.
1. Turn ignition key to position 2 and
hold for five seconds.
2. Turn key back to position 1 and
wait for three seconds.
