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80Instruments and controlsTurn signal
O illuminates or flashes green.
Illuminates The control indicator illuminates
briefly when the parking lights are
switched on 3 102.
Flashes
The control indicator flashes if a turn
signal or the hazard warning flashers
are activated.
Rapid flashing: failure of a turn signal light or associated fuse, failure of turn
signal light on trailer.
Bulb replacement 3 153, Fuses
3 166, Turn signals 3 101.
Seat belt reminder
X illuminates or flashes red.
Illuminates
After the ignition is switched on until
the seat belt is fastened.Flashes
After starting off until the seat belt is
fastened.
Fastening the seat belt 3 39.
Airbag and belt tensioners
v illuminates red.
When the ignition is switched on, the
control indicator illuminates for
approx. 4 seconds. If it does not
illuminate, does not go out after
4 seconds or illuminates whilst
driving, there is a fault in the belt
tensioner or the airbags. In this case
the LEDs in the button W will also
flash. The airbags and belt tensioners
may fail to trigger in the event of an
accident.
Deployment of the belt tensioners or
airbags is indicated by continuous
illumination of v.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Airbag system, belt tensioners 3 41,
3 38.
Airbag deactivation W illuminates together with the LEDs
in the button W: airbag deactivated
3 46.
W flashes: the system can be
activated or deactivated within
15 seconds of switching on the
ignition 3 46.
Charging system
p illuminates or flashes red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
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90Instruments and controlsVehicle messagesMessages are given via the
instrument panel display or as
warning and signal buzzers. Check
control messages appear on the
Info-Display. Some appear in an
abbreviated form. Confirm warning
messages with the multifunction
control 3 86.
Warning chimes When starting the engine or
whilst driving ■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting-off.
■ If a certain speed is exceeded with the parking brake applied.
■ If the speed programmed at the factory is exceeded.
■ If the vehicle has manual transmission automated and the
driver's door is opened when theengine is running, a gear is
engaged and the foot brake is not
depressed.
■ Warning signal sounds three times if the rear carrier system is
extended and reverse gear is
selected.
When the vehicle is parked and
the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ For manual transmission automated, if the parking brake is
not applied and no gear is engaged when the engine is switched off.
During an Autostop ■ If the driver's door is opened.
Battery voltage Low battery voltage in the radio
remote control. On vehicles without
check control, the message InSP3
appears in the instrument panel
display. Replace the battery 3 20.Brake light switch
Brake light does not come on during
braking. Have the cause of the fault
remedied immediately by a
workshop.
Drain diesel fuel filter
If there is water in the diesel fuel filter, the message InSP4 appears in the
instrument panel. In some models
InSP4 illuminates together with A in
the instrument. Consult a workshop.
Lighting
Important exterior lighting lamps,
including cables and fuses, are
monitored. In trailer mode, trailer
lighting is also monitored. Trailers
with LED lighting must have an
adapter that enables lamp monitoring as with conventional bulbs.
Page 147 of 231

Vehicle care145Vehicle careGeneral Information...................145
Vehicle checks ........................... 146
Bulb replacement .......................153
Electrical system ........................166
Vehicle tools .............................. 170
Wheels and tyres .......................172
Jump starting ............................. 187
Towing ....................................... 189
Appearance care .......................191General Information
Accessories and vehicle
modifications
We recommend using genuine parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Do not make any modifications to the electrical system, e.g. changes of
electronic control units (chip tuning).Caution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Vehicle storage
Storage for a long period of time
The following must be carried out if
the vehicle is to be stored for several
months:
■ Wash and wax the vehicle.
■ Have the wax in the engine compartment and underbody
checked.
■ Clean and preserve rubber seals.
■ Fill up fuel tank completely.
■ Change engine oil.
■ Drain washer fluid reservoir.
■ Check coolant antifreeze and corrosion protection.
■ Adjust tyre pressure to the value specified for full load.
■ Park vehicle in dry, well ventilated place. Engage first or reverse gear
or set selector lever to P. Prevent
the vehicle from rolling.
■ Do not apply parking brake.
Page 155 of 231
Vehicle care153
Wiper blades on the windscreen
Lift the wiper arm, tilt wiper blade at a
90° to the wiper arm and remove to
the side.
Wiper blade on the rear window
Lift wiper arm. Disengage wiper blade as shown in illustration and remove.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower wiper arm carefully.
Bulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base. Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
To replace bulbs on the right side of
the engine compartment, detach the
air hose from the air filter.
On VXR vehicles, it is recommended
to have the bulbs replaced by a
workshop.
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154Vehicle care
To replace the bulb on the left-hand
side, remove fuse box cover 3 168,
and also remove windscreen washer system reservoir filler neck from
above. Washer fluid may escape if
the reservoir is full to the top.
Halogen headlights
Headlights have separate systems for low beam 1 (outer bulb), high beam
2 (inner bulb) and daytime running
light/side light 3.
Low beam
1. Disengage wire clip and remove
protective cover 1.
2. Press base to the side and
remove bulb from reflector.
3. Detach plug connector from bulb.
4. Insert new bulb in reflector so that
the locating tab of the bulb holder aligns with the reflector recess.
5. Engage bulb.
6. Attach connector to bulb.
7. Put on protective cover and engage wire clip.
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Vehicle care155
High beam
1. Rotate protective cover 2
anticlockwise and remove.
2. Detach wiring plug from bulb.
3. Disengage spring clip from retainer by moving and swivelling
to the side.
4. Remove bulb from reflector housing.
5. When installing the new bulb, insert lugs in the reflectorrecesses.
6. Install spring clip, plug connector onto bulb.
7. Install protective cover.
Daytime running light/side light
1. Rotate bulb holder 3
anticlockwise to disengage.
Withdraw sidelight bulb holder
from reflector.
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156Vehicle care
2. Remove bulb from socket, insertnew bulb.
3. Insert bulb holder in reflector so that the locating tab of the bulb
holder aligns with the reflector
recess.
4. Rotate clockwise to engage.
Front turn signal light
Front turn signal lights are equipped
with longlife bulbs. In case of failure,
have bulb replaced by a workshop.
Adaptive forward lighting
Headlights have separate systems for low and high beam 1 (outer bulb),
cornering light 2 (inner bulb) and
daytime running light/side light 3.
Low/high beam
1. Disengage wire clip and remove
protective cover 1.
Page 159 of 231
Vehicle care157
2. Rotate bulb holder anticlockwiseto disengage.
Withdraw bulb holder from
reflector.
3. Insert new bulb in reflector so that
the locating tab of the bulb holder
aligns with the reflector recess.
4. Engage bulb holder by turning clockwise.
5. Put on protective cover and engage wire clip.
Daytime running light/Side light
1. Rotate bulb holder 3
anticlockwise to disengage.
Withdraw bulb holder from
reflector.
2. Remove bulb from socket, insert new bulb.
3. Insert bulb holder in reflector so that the locating tab of the bulb
holder aligns with the reflector
recess.
4. Rotate clockwise to engage.