Page 175 of 231

Vehicle care173disconnecting the main vehicle
battery or before jump starting the vehicle.
The terminals are designed for
additional electrical consumers up to
a maximum of 50 A.
Jump starting 3 197.
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 5 seconds at a
time.
● Switch off ignition (key to position
1 ) for 3 seconds.
● Repeat this process multiple times.
● Start the engine (key to position 3) then switch off (key to position
0 ).
Ignition switch positions 3 131.
Page 176 of 231
174Vehicle careWith power button
● Insert the electronic key in thecard reader.
● Press START/STOP without
pressing any of the pedals.
● Wait a few minutes before starting engine.
Power button 3 131.
If the engine fails to start, seek the
assistance of a workshop.
Starting the engine 3 133.
Wiper blade replacement
Wiper blades on the windscreen
Before replacing the wiper blades,
move the wiper lever to the
maintenance position (if equipped).
Windscreen wiper and washer 3 84.
Lift the wiper arm, press button to
disengage the wiper blade and
remove.
Attach new wiper blade slightly
angled to the wiper arm and push until
it engages.
Lower wiper arm carefully.
Wiper blade on the rear window
Lift wiper arm, press retaining lugs
together to disengage the wiper blade
and raise to remove.
Lower wiper arm carefully.
When attaching new wiper blade,
ensure it is engaged securely.
Page 177 of 231
Vehicle care175Bulb replacement
Switch off the ignition and turn 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.
Bulb check
After a bulb replacement, switch on
the ignition, operate and check the
lights.
Headlights Low beam and high beam
Replace headlight bulbs from within
the engine compartment.
1. Remove protective cover by rotating it anticlockwise.
2. Detach wiring connector.
3. Release retaining clip (see illustration) and remove bulb.
4. Renew bulb and install retaining clip ensuring that bulb is in correct
orientation.
5. Reattach wiring connector and protective cover.
Sidelights / Daytime running lights
1. Remove protective cover byrotating it anticlockwise.
2. Release retaining clips and remove bulb holder from reflector
housing.
3. Renew bulb.
4. Install bulb holder in reflector housing and engage retaining
clips.
5. Install protective cover.
Page 183 of 231
Vehicle care181Instrument panel
illumination
Have bulbs replaced by a workshop.Electrical system
Fuses Data on the replacement fuse must
match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
● on the left-hand side of the instrument panel, behind the trim
panel
● in the engine compartment located next to the battery
Notice
The engine compartment fuse box
should only be accessed by a
workshop.
Before replacing a fuse, turn off the
respective switch and the ignition.
There are different types of fuses in the vehicle.
Depending on the type of fuse, a
blown fuse can be recognised by its
melted wire. Do not replace the fuse
until the cause of the fault has been
remedied.
Page 191 of 231

Vehicle care189PunctureA puncture or severely under-inflated
tyre is indicated by illumination of
control indicator w together with C
3 97 and a corresponding message
appears in the Driver Information
Centre. Stop vehicle and switch off
engine.
Tyre pressure 3 213.
Tyre repair kit 3 191.
Spare wheel 3 195.
Wheel changing 3 194.
Relearn functionAfter a puncture has been repaired
and the driver has inflated the tyres to
the correct tyre pressure, the tyre
pressure monitoring system needs to recalculate.
Tyre pressure 3 213.
Tyre repair kit 3 191.
During driving, select the tyre
pressure menu in the Driver
Information Centre by pressing button
on end of wiper lever. Press and hold button for approx. 5 seconds to
initialise recalculation. A
corresponding message appears in
the Driver Information Centre.
Several minutes of driving at a speed above 25 mph may be required to
complete the relearn process. The system can only provide limited
information during this time.
If problems occur during the relearn
process, control indicator w remains
illuminated and a warning message is displayed in the Driver Information
Centre.
Driver Information Centre 3 101.
Vehicle messages 3 102.General information
The use of tyre chains or
commercially available liquid tyre
repair kits can impair the function of
the system. Factory-approved tyre
repair kits can be used.
Tyre repair kit 3 191.
Tyre chains 3 190.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.
Each time the tyres are replaced, the
tyre pressure monitoring system
sensors must be dismounted and
serviced by a workshop.
Tread depth Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2–3 mm
(4 mm for winter tyres).
For safety reasons it is recommended
that the tread depth of the tyres on
one axle should not vary by more than 2 mm.
Page 194 of 231

192Vehicle care
6. Screw the filler hose to the tyrevalve.
7. The switch on the compressor must be set to O.
8. Connect the electrical connection cable to the power outlet or
cigarette lighter socket.
To avoid discharging the vehicle
battery, we recommend running
the engine.9. Set the rocker switch on the compressor to I. The tyre is filled
with sealant.
10. The compressor pressure gauge briefly indicates up to six bar
(600 kPa/87 psi). Then the
pressure starts to drop.
11. All of the sealant is pumped into the tyre. Then the tyre is inflated.12. The prescribed tyre pressure should be obtained within
15 minutes.
Tyre pressure 3 213.
When the correct pressure is
obtained, switch off the
compressor.
If the prescribed tyre pressure is
not obtained within 15 minutes,
remove the tyre repair kit. Move
the vehicle one tyre rotation
(approx. 2 m). Reattach the tyre
repair kit and continue the filling
procedure for 15 minutes. If the
prescribed tyre pressure is still not
obtained, the tyre is too badly
Page 196 of 231

194Vehicle careWheel changingSome vehicles are equipped with a
tyre repair kit instead of a spare wheel
3 191.
Make the following preparations and
observe the following information:
● Park the vehicle on a level, firm and non-slippery surface. The
front wheels must be in the
straight-ahead position.
● Apply the parking brake and engage first gear or reverse gear.
● Remove the spare wheel 3 195.
● Never change more than one wheel at a time.
● Use the jack only to change wheels in case of puncture, not
for a seasonal winter or summer
tyre change.
● The jack is maintenance-free.
● If the ground on which the vehicle
is standing is soft, a solid board
(max. 1 cm thick) should be
placed under the jack.
● Remove heavy objects out of the
vehicle before jacking up.● No people or animals may be in the vehicle when it is jacked-up.
● Never crawl under a jacked-up vehicle.
● Do not start the engine when the vehicle is raised on the jack.
● Clean wheel bolts / nuts and thread with a clean cloth before
mounting the wheel.9 Warning
Do not grease wheel bolt, wheel
nut and wheel nut cone.
1. Remove the wheel cover (using the hook supplied).
Vehicle tools 3 185.
2. Loosen each of the wheel bolts by
half a turn using the wheel
wrench. Ensure the wrench is
securely located. The wrench
should turn anticlockwise to
loosen the bolts. Invert the wrench if necessary.
Page 199 of 231

Vehicle care197Jump starting
Do not start with a quick charger.
A vehicle with a discharged battery
can be started using jump leads and
the vehicle battery of another vehicle.9 Warning
Be extremely careful when starting
with jump leads. Any deviation
from the following instructions can
lead to injuries or damage caused
by battery explosion or damage to the electrical systems of both
vehicles.
9 Warning
Avoid contact of the battery with
eyes, skin, fabrics and painted
surfaces. The fluid contains
sulphuric acid which can cause
injuries and damage in the event
of direct contact.
● Never expose the battery to naked flames or sparks.
● A discharged vehicle battery canalready freeze at a temperature
of 0 °C. Defrost the frozen battery
before connecting jump leads.
● Wear eye protection and protective clothing when
handling a battery.
● Use a booster battery with the same voltage (12 V). Its capacity
(Ah) must not be much less than
that of the discharged battery.
● Use jump leads with insulated terminals and a cross section of
at least 16 mm 2
(25 mm 2
for
diesel engines).
● Do not disconnect the discharged
vehicle battery from the vehicle.
● Switch off all unnecessary electrical consumers.
● Do not lean over the battery during jump starting.
● Do not allow the terminals of one
lead to touch those of the other
lead.
● The vehicles must not come into contact with each other during
the jump starting process.● Apply the parking brake, transmission in neutral.
● Open the positive terminal protection caps of both batteries.
The battery is located in the engine compartment.
Remove cover to access the battery.
Notice
If present, 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 jump
starting the vehicle.
Vehicle battery 3 171.