Page 32 of 228
32
Keys, doors and windowsTo replace the battery, press the
locking mechanism and remove the
cap by applying light pressure. Press
the cap on the other side outward.
Replace the battery (battery type CR
20
32), noting the installation position.
Engage caps.
Radio remote control
synchronisation
The radio remote control
synchronises itself automatically
during every starting procedure. Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
■
Fault in remote control 3 28,
■ electronic key out of reception range.
To rectify the cause of the fault,
change the position of the electronic
key.
Central locking system
Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks the entire vehicle and opens
the door.
Note
In the event of an accident of
a certain severity, the vehicle
unlocks automatically. Unlocking
Radio remote control
Press button q.
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38
Keys, doors and windows
After the first 10 seconds of anti-theft
alarm system activation:
LED flashes
slowly = System active,
LED comes
on for approx.
1 second = Switch off function.
Seek the assistance of a workshop in
the event of faults.
Alarm
When triggered, the alarm gives off
an
acoustic signal (horn) and a visual
signal (hazard warning flashers). The
number and duration of which are
stipulated by legislation.
The alarm can be silenced by
pressing a button of the radio remote
control or by switching on the ignition.
The anti-theft alarm system is
deactivated at the same time. Immobiliser
The system checks whether the
vehicle
is allowed to start with the key
being used. If the transponder in the
key is recognised, the vehicle can be
started.
The electronic immobiliser activates
itself automatically after the key has
been removed from the ignition
switch or when the engine is switched
off by pressing the Start/Stop button.
If the control indicator A flashes
when the ignition is on, there is a fault
in the system; the engine cannot be
started. Switch off the ignition and
then repeat the start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
If control indicator illuminates after
the engine has started, there is a fault
in the engine electronics or
transmission electronics 3 88,
3 135, 3 139, or there is water in the
diesel fuel filter 3 101. Note
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 32,
3 36.
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40
Keys, doors and windows
Heated Operated by pressing the
Ü button.
Heating functions with the engine
running and is switched off
automatically after a short time. Interior mirrors
Manual anti-dazzle
To reduce dazzle, turn the lever on
the underside of the mirror housing. Automatic anti-dazzle
Dazzle from following vehicles at
night is automatically reduced.
Page 43 of 228
Keys, doors and windows
43
Operated by pressing the Ü button.
Heating functions with the engine
running and is switched off
automatically after a short time.
Depending on the engine type, the
heated rear window comes on
automatically
when the diesel particle
filter is being cleaned.
Sun visors
The sun visors can be folded down or
swivelled to the side to prevent
dazzling.
If the sun visors have integral mirrors,
the mirror covers should be closed
when driving. Roof
Moonroof
Do
not affix any stickers to the middle
part of the roof. Do not cover the
vehicle using a tarpaulin.
Sunblind
The sunblind is electrically operated. Press button G to open and H to
close. Press and hold the button to
close fully.
Page 49 of 228
Seats, restraints
49
Armrest Push raised armrest backward
against resistance and fold down.
The armrest can be moved to
different positions in stages by lifting
it. Heating
Adjust heating to the desired setting
by pressing the
ß button for the seat
one
or more times with the ignition on.
The control indicator in the button
indicates the setting.
Prolonged use of the highest level for
people with sensitive skin is not
recommended.
Seat heating is operational when the
engine is running. Rear seats
Second row seats
9
Warning When the row of seats or the
backrests are being adjusted,
keep hands away from the hinge
area - risk of injury.
Moving seat row
Push the release lever forwards and
slide the row of seats. Release the
lever and audibly engage the seats.
Page 81 of 228

Instruments and controls
81
adjusted using the ; button. The Ö
button is used to switch to the next
mode and to exit setting mode.
Automatic time synchronisation
The RDS signal of most VHF
transmitters automatically sets the
time, identified by } in the display.
Some transmitters do not send
a correct time signal. In such cases,
we recommend to switch off
automatic time synchronisation.
Activate setting mode and set it to
year setting. Hold the Ö button
depressed about 3 seconds until }
flashes in the display and “RDS
TIME" appears. The function is
activated (RDS TIME 1) or
deactivated (RDS TIME 0) with
the ; button. Exit setting mode using
the Ö button.
Power outlets
Power outlets are located in the
centre console and in the luggage
compartment. Do not damage the sockets by using
unsuitable plugs. Connecting
electrical accessories while the
engine is off will discharge the
battery. Do not exceed the maximum power consumption of 120 watts. Do
not connect any current-delivering
accessories, e.g. electrical charging
devices or batteries.
Electrical accessories that are
connected must comply with the
electromagnetic compatibility
requirements laid down in DIN VDE
40 839.
Cigarette lighter
The cigarette lighter is located in the
centre console.
Page 83 of 228
Instruments and controls
83
Warning lights, gauges
and indicators
Instrument cluster
In some versions, the needles of the
instruments briefly rotate to the end
position
when the ignition is switched
on.
Speedometer Indicates vehicle speed. Odometer
The bottom line displays the recorded
distance.
Trip odometer
The top line displays the counted
kilometres since the last reset.
To reset, hold the reset knob
depressed
for a few seconds with the
ignition on. Tachometer
Displays the engine revolutions per
minute.
Drive
in a low engine speed range for
each gear as much as possible. Caution
If the needle is in the warning
zone, the maximum permitted
engine
speed is exceeded. Engine
at risk.
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Instruments and controls
85
If the natural gas tanks are not
refuelled, the system must be
manually switched to petrol operation
before the engine is started up again.
This will prevent damage to the
catalytic converter (overheating
caused by irregular fuel supply).
If the selector switch is operated
several times within a short time
a switchover block is activated. The
engine remains in the current
operating mode. The block remains
active until the ignition is switched off.
A slight loss of power and torque can
be expected in petrol operation. You
must therefore adapt your driving
style (e.g. during overtaking
manoeuvres) and vehicle loads (e.g.
towing loads) accordingly.
Every six months run the petrol tank
down until control indicator Y
illuminates and refuel. This is
necessary to maintain fuel quality as
well as system function necessary for
petrol operation.
Fill the tank completely at regular
intervals to prevent corrosion in the
tank. Service display
The message InSP appears when it
is time for servicing. Further
information
3 192.
Control indicators
The control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. When the ignition is
switched on, most control indicators
will
illuminate briefly as a functionality
test. The control indicator colours mean:
Red = Danger, important
reminder,
Yellow = Warning, information, fault,
Green = Confirmation of activation,
Blue = Confirmation of activation.