Page 94 of 271

92Instruments and controlsFlashes
A turn signal or the hazard warning flashers are activated.
Rapid flashing: failure of a turn signal
light or associated fuse.
Bulb replacement 3 199, Fuses
3 207.
Turn signals 3 120.
Seat belt reminder
Seat belt reminder on front seats
X for driver's seat illuminates or
flashes red in the tachometer.k for front passenger seat illuminates
or flashes red in the centre console
when the seat is occupied.
Illuminates
After the ignition has been switched on, until the seat belt has been
fastened.
Flashes
After having started the engine for a
maximum of 100 seconds, until the
seat belt has been fastened.
Fastening the seat belt 3 42.
Seat belt status on rear seatsX in the Driver Information Centre
flashes or illuminates.
Illuminates
After having started the engine for a
minimum of 35 seconds, until the seat
belt has been fastened.
Also illuminates if an unfastened seat belt is fastened whilst driving.
Flashes
After starting-off, when the seat belt is
unfastened.
Fastening the seat belt 3 42.
Airbag and belt tensioners v illuminates red.
When the ignition is switched on, the control indicator illuminates for
approx. four seconds. If it does not
illuminate, does not go out after
four seconds or illuminates whilst driving, there is a fault in the airbag
system. Seek the assistance of a
workshop. The airbags and belt
pretensioners may fail to trigger in the event of an accident.
Page 188 of 271

186Driving and operatingTrailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust retrofitting of towing
equipment to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
The bulb outage detection function for trailer brake light cannot detect a
partial bulb outage, e.g. in case of four
times five watt bulbs, the function only detects lamp outage when only a
single five Watt lamp remains or none
remain.
Fitting of towing equipment could
cover the opening of the towing eye.
If this is the case use the coupling ball bar for towing. Always keep the
coupling ball bar in the vehicle when
not in use.Driving characteristics and
towing tips
Before attaching a trailer, lubricatethe coupling ball. However, do not do
so if a stabiliser, which acts on the
coupling ball, is being used to reduce snaking movements.
For trailers with low driving stability
and caravan trailers with a permitted
gross vehicle weight of more than
1000 kg a speed of 80 km/h must not
be exceeded; the use of a stabiliser is
recommended.
If the trailer starts snaking, drive more
slowly, do not attempt to correct the
steering and brake sharply if
necessary.
When driving downhill, drive in the
same gear as if driving uphill and
drive at a similar speed.
Adjust tyre pressure to the value
specified for full load 3 255.Trailer towing
Trailer loadsThe permissible trailer loads are
vehicle and engine-dependent
maximum values which must not be
exceeded. The actual trailer load is
the difference between the actual
gross weight of the trailer and the
actual coupling socket load with the
trailer coupled.
The permissible trailer loads are
specified in the vehicle documents. In general, they are valid for gradients
up to max. 12%
The permitted trailer loads apply up to
the specified incline and up to an
altitude of 1000 metres above sea
level. Since engine power decreases
as altitude increases due to the air
becoming thinner, therefore reducing
climbing ability, the permissible gross train weight also decreases by 10%
for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving
on roads with slight inclines (less than
8%, e.g. motorways).
Page 193 of 271

Vehicle care191Vehicle careGeneral Information...................192
Accessories and vehicle modifications .......................... 192
Vehicle storage ........................192
End-of-life vehicle recovery .....193
Vehicle checks ........................... 193
Performing work ......................193
Bonnet ..................................... 193
Engine oil ................................. 194
Engine coolant ......................... 195
Washer fluid ............................ 196
Brakes ..................................... 197
Brake fluid ............................... 197
Vehicle battery ......................... 197
Diesel fuel system bleeding .....198
Wiper blade replacement ........199
Bulb replacement .......................199
Halogen headlights ..................199
Xenon headlights .....................202
Fog lights ................................. 203
Front turn signal lights .............203
Tail lights ................................. 204
Side turn signal lights ..............206
Centre high-mounted brake light ......................................... 206Number plate light...................206
Interior lights ............................ 207
Instrument panel illumination ...207
Electrical system ........................207
Fuses ....................................... 207
Engine compartment fuse box . 208
Instrument panel fuse box .......210
Vehicle tools .............................. 212
Tools ........................................ 212
Wheels and tyres .......................213
Winter tyres ............................. 213
Tyre designations ....................214
Tyre pressure .......................... 214
Tyre pressure monitoring system .................................... 215
Tread depth ............................. 219
Changing tyre and wheel size . 220
Wheel covers ........................... 220
Tyre chains .............................. 221
Tyre repair kit .......................... 221
Wheel changing .......................226
Spare wheel ............................ 228
Jump starting ............................. 230
Towing ....................................... 232
Towing the vehicle ...................232
Towing another vehicle ...........233Appearance care .......................234
Exterior care ............................ 234
Interior care ............................. 236
Page 201 of 271
Vehicle care199Wiper blade replacement
Lift the wiper arm until it stays in the
raised position. Press the catches on
both sides, tilt wiper blade at a 90°
angle to the wiper arm and remove
upwards.
Insert in reverse order.
Lower wiper arm carefully.
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.
Replace headlight bulbs from within
the engine compartment.
Bulb check
After a bulb replacement switch on
the ignition, operate and check the
lights.
Halogen headlights Halogen headlights with separate
bulbs for sidelight, low beam and high
beam.
Page 202 of 271
200Vehicle care
Sidelight/daytime running light (1)
Low beam (2)
High beam (3)
Front turn signal lights 3 203.
Low beam
1. Rotate the cap (2) anticlockwise
and remove it.
2. Press the clip to disengage bulbholder. Withdraw the bulb holder
from the reflector.
3. Detach the bulb from the bulb holder and replace the bulb.
4. Insert the bulb holder with the clip
downwards and engage into the
reflector until it clicks.
5. Install cap.
Page 203 of 271
Vehicle care201High beam
1. Rotate the cap (3) anticlockwiseand remove it.
2. Press the clip to disengage bulbholder. Withdraw the bulb holder
from the reflector.
3. Detach the bulb from the bulb holder and replace the bulb.
4. Insert the bulb holder with the clip
downwards and engage into the
reflector until it clicks.
5. Install cap.
Sidelight/daytime running light
with bulbs
1. Rotate bulb socket (1) anticlockwise to disengage.
Page 204 of 271
202Vehicle care2. Press both clips together andwithdraw the bulb socket from theheadlamp housing.
3. Remove the bulb from the socket by pulling.
4. Replace and insert new bulb into socket.
5. Insert the bulb socket into the headlamp housing and turn
clockwise.
Sidelight/daytime running light
with LEDs
Sidelights and daytime running lights
are designed as LEDs and cannot be
changed. Consult a workshop in case
of a defective LED.
Xenon headlights9 Danger
Xenon headlights work under
extremely high electrical voltage.
Do not touch. Have bulbs replaced by a workshop.
Sidelight/daytime running lights are
designed as LEDs and cannot be
changed.
Bulbs for corner lighting can be
changed.
Front turn signal lights 3 203.
Corner lighting
1. Rotate the cap (3) anticlockwise
and remove it.
Page 205 of 271
Vehicle care2032. Rotate the bulb holderanticlockwise to disengage.
Withdraw the bulb holder from the reflector.
3. Remove the bulb from the plug connector by disengaging and
pulling.
4. Replace the bulb. Connect and engage bulb holder with the plug
connector.
5. Insert the bulb holder into the reflector and rotate clockwise to
secure.
6. Fit the cap and rotate clockwise.
Fog lights
The bulbs are accessible from the
underside of the vehicle.
1. Turn the bulb holder anti- clockwise and remove it from the
reflector.
2. Disengage the bulb socket from the plug connector by pressing
the retaining lug.
3. Remove and replace the bulb socket with bulb and attach the
plug connector.
4. Insert the bulb socket into the reflector by turning clockwise and
engage.
Front turn signal lights
Front turn signal lights consist of long- life bulbs which cannot be changed.
Consult a workshop in case of a
defective long-life bulb.