Page 154 of 231

152Vehicle care
Meaning of symbols:■ No sparks, naked flames or smoking.
■ Always shield eyes. Explosive gases can cause blindness or
injury.
■ Keep the vehicle battery out of reach of children.
■ The vehicle battery contains sulphuric acid which could cause
blindness or serious burn injuries.
■ See the Owner's Manual for further
information.
■ Explosive gas may be present in the vicinity of the vehicle battery.Diesel fuel system
bleeding
If the tank has been run dry, the diesel fuel system must be bled. Switch on
the ignition three times for
15 seconds at a time. Then crank the
engine for a maximum of
40 seconds (for technical reasons
only 30 seconds are possible with
engine A 17 DTS). Repeat this
process after no less than 5 seconds .
If the engine fails to start, seek the
assistance of a workshop.Wiper blade replacement
Service setting for front windscreen wipers
Switch off the ignition but do not
remove ignition key or open driver's
door.
Within 4 seconds, push the wiper
lever down and release as soon as
the wipers are vertical.
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.
Page 163 of 231
Vehicle care161
5. Gently press the three lockinglugs on the outside of the bulb
holder outwards and remove bulb
holder.
6. Push bulb into socket slightly, rotate anti-clockwise, remove and
renew bulb.
Rear fog light, may be only on one side ( 1)
Reverse light ( 2)
Turn signal light ( 3)
Tail light/side light ( 4)
Tail light/brake light ( 5)
7. Engage bulb holder in bulb
housing, ensuring that it properly
engages.
8. Ensure that the bulb holder seal is
positioned as illustrated.
9. Insert bulb housing in vehicle body, tighten securing nuts by
hand. Engage plug connector.
Close cover.
After bulb replacement, check the tail lights for proper functionality: switch
on the ignition, operate the brake,
switch on the sidelights.
Page 165 of 231

Vehicle care163
5. Gently press the three lockinglugs on the outside of the bulb
holder outwards and remove bulb
holder.
6. Push bulb into socket slightly, rotate anti-clockwise, remove and
renew bulb.
Reverse light (right side), rear fog
light (left side) ( 1)
Tail light ( 2)
Turn signal light ( 3)
Tail light/brake light ( 4)
Tail light ( 5)
7. Engage bulb holder in bulb
housing, ensuring that it properly
engages.
8. Ensure that the bulb holder seal is
positioned as illustrated. Fit the
round seal on the fastening bolt.
9. Insert bulb housing in vehicle body, and tighten securing nuts byhand. Engage plug connector.
Close and lock cover.
After bulb replacement, check the tail
lights for proper functionality: switch
on the ignition, operate the brake,
switch on the sidelights.
Side turn signal lights
To replace bulb, remove lamp
housing:
1. On left vehicle side, slide lamp to the front and remove it out of the
front wing with the rear end.
On right vehicle side, slide lamp to
the rear and remove it out of the front wing with the front end.
Page 168 of 231
166Vehicle care
Glovebox light, foot well light
1. Prise the lamp out with ascrewdriver.
2.Press bulb slightly towards spring
clip and remove.
3. Insert new bulb.
4. Install lamp.Electrical system
Fuses
Data on the replacement fuse must
match the data on the defective fuse.
There are three fuse boxes in the
vehicle:
■ in the front left of the engine compartment,
■ in left-hand drive vehicles: in the interior behind the light switch, or,
in right-hand drive vehicles: behind
the glovebox,
■ behind a cover on the left side of the
load compartment.
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised by its melted wire. Do not replace the fuse
until the cause of the fault has been
remedied.
Some functions are protected by
several fuses.
Fuses may also be inserted without existence of a function.
Page 170 of 231
168Vehicle care
No.Circuit1Starter2Air conditioning system3Diesel fuel filter heater4Horn5Manual transmission auto‐
mated, automatic transmission6Engine control unit7Fog lights8Engine cooling9Engine cooling10Manual transmission auto‐
mated11Glow plugs, ignition system12Headlight range adjustment,
Adaptive forward lighting13Air conditioning system14Manual transmission auto‐
mated15High beam (right)No.Circuit16High beam (left)17Main relay18Engine control unit19Airbags20Main relay21Main relay22Central control unit23Tyre repair kit24Fuel pump25ABS26Heated rear window27ABS28Interior fan29Cigarette lighter30Air conditioning system31Power window (left)32Power window (right)No.Circuit33Heated exterior mirrors34–35–
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the light switch. Pull the top edge of the panel and fold down.
Page 171 of 231
Vehicle care169
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover. To close, first put
on the cover, then lock it into position.
No.Circuit1–2Instruments, info-display3Radio4Ignition switch5Windscreen washer system6Central locking system, tailgate7Central locking system8–9Courtesy lightNo.Circuit10Electrical power steering11Light switch, brake light12ABS, brake light13Heated steering wheel14Park assist, rain sensor, interior mirror
Load compartment fuse
box
Page 177 of 231

Vehicle care175
on your vehicle to ensure that the
replacement or alternate tyres and wheels allow the tyre pressure
monitoring system to continue to
function properly.
The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory
approved repair kits can be used.
System initialisation After a wheel change or tyre pressure
adjustment the system must be
initialised: inflate the cold tyres to the
prescribed pressure according to the
tyre information label or this
document 3 217. Then switch on
ignition and press and hold the DDS
button for approx. 4 seconds. The
control indicator A flashes three
times.
If the tyre pressure difference
between the left and the right wheel
on one axle is more than 30 kPa, tyre
pressure monitoring system
malfunction will be indicated, as the
vehicle starts moving for the first time after initialisation. Adjust tyre
pressure and repeat initialisation.Notice
The system needs to be initialised
after tyre pressure change,
otherwise it will not be able to warn
properly.
Each time the tyres are replaced, the
tyre pressure monitoring system
sensors have to be dismounted and
serviced. For the screwed sensor
replace the valve core and sealing
ring, for the clipped sensor replace
complete rubber valve stem.
Auto learn function
After changing wheels the vehicle
must be stationary for approx.
20 minutes, before the system
recalculates. The following relearn
process takes up to 10 minutes of
driving with a minimum speed of
16 mph.
Tyre deflation detection
system The tyre deflation detection system
continually checks the rotation speed
of all four tyres.
If a tyre loses pressure the control
indicator w illuminates red. Stop
immediately and check tyre pressure.
Control indicator w 3 83.