238Wheels and tyres
WARNING
● Never adjust tyre pressure when the tyres are hot. This may damage
or even burst the tyres. Risk of accident!
● An insufficiently inflated tyre flexes a lot more at high speeds and
causes significant heating of the tyre. Under these conditions, the tyre
bead may be released or the tyre may burst. Risk of accident!
For the sake of the environment
Under-inflated tyres lead to increased fuel consumption and tyre wear.
Significant tyre pressure loss
The tyre symbol is displayed and indicates that the tyre pressure
of at least one tyre is insufficient.
– Stop the vehicle.
– Switch the engine off.
– Check the tyre(s).
– Change the wheel if necessary ⇒
page 246. Tyre service life
The service life of tyres is dependent on tyre pressure, driv-
ing style and fitting.
Fig. 167 Tyre tread wear
indicators
Fig. 168 Diagram for
changing wheels
245
If and when
If and when
Tools, tyre repair kit and spare wheel Vehicle Tools
The vehicle onboard tools are located under the floor panel
in the luggage compartment.
– Lift the cover of the luggage compartment, by pulling it up with
a finger in the fitting.
– Take the on-board tools out of the vehicle.
The tool kit includes:
● Jack*
● Hook for removing wheel covers* or hub caps*
● Box spanner for wheel bolts*
● Towing eye
● Adapter for the anti-theft wheel bolts*
Some of the items listed are only provided in certain model versions, or are
optional extras.
WARNING
● The factory-supplied jack* is only designed for changing wheels on
this model. On no account attempt to use it for lifting heavier vehicles or
other loads. Risk of injury.
● Use the jack* only on firm, level ground.
WARNING (Continued)
● Never start the engine when the vehicle is on the jack. Risk of acci-
dent.
● If work is to be carried out underneath the vehicle, this must be se-
cured by suitable stands. Otherwise, there is a risk of injury.
Compact temporary spare wheel*
The compact spare wheel (emergency wheel for vehicles
without the anti-puncture kit) should only be used when
strictly necessary.
Fig. 169 Luggage com-
partment. Access to the
spare wheel
The temporary spare wheel is stored under the floor panel in the luggage
compartment and is attached by a thumbnut.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications
246If and when
How to use the temporary spare wheel
Should you ever have a punctured tyre, the temporary spare wheel is only
intended for temporary use until you can reach a workshop. The standard-
size road wheel should be replaced as soon as possible.
Please note the following restrictions when using the temporary spare
wheel. This spare wheel has been specially designed for your vehicle, thus,
it cannot be changed with the spare wheel from another vehicle.
No other type of tyre (normal summer or winter tyre) may be fitted on the
compact temporary spare wheel rim.
Snow chains
For technical reasons, snow chains must not be used on the compact tem-
porary spare wheel.
If you have a puncture on one of the front wheels when using snow chains,
fit the compact temporary spare in place of one of the rear wheels. You can
then attach the snow chains to the wheel taken from the rear and use this
wheel to replace the punctured front wheel.
WARNING
● The tyre pressures must be checked and corrected as soon as possi-
ble. The emergency tyre pressure for dimensions 125/70R16 125/70R18
135/90R16 is 4.2 bar; for all other tyre dimensions please refer to the la-
bel on the fuel cap. Failure to do so could result in an accident.
● Do not drive faster than 80 km/h. Higher speeds can cause an acci-
dent.
● Avoid heavy acceleration, hard braking and fast cornering. Risk of ac-
cident.
● Never use two or more compact spare tyres at the same time, risk of
accident.
● No other type of tyre (normal summer or winter tyre) may be fitted on
the compact temporary spare wheel rim.
Tyre repair kit
The tyre repair kit (for vehicles not including a spare wheel)
is stored under the floor panel in the luggage compartment.
In the event of a punctured tyre, your vehicle is equipped with the Tyre Mo-
bility System.
The tyre repair kit consists of a container with sealing compound to repair
the puncture and a compressor to generate the required tyre pressure. The
kit will reliably seal punctures up to a size of about 4 mm caused by the
penetration of a foreign body into the tyre.
Note
● Seek professional assistance if the repair of a tyre puncture is not possi-
ble with the sealing compound.
Wheel change Preparation work
What you must do before changing a wheel.
– If you have a flat tyre or puncture, park the vehicle as far away
from the flow of traffic as possible. Choose a location that is as
level as possible.
– All passengers should leave the vehicle. They should wait in a
safe area (for instance behind the roadside crash barrier).
– Switch off the engine. Switch on the hazard warning lights.
– Apply the handbrake firmly.
255
If and when
Fuses
Changing a fuse
Blown fuses must be replaced
Fig. 176 Left side of
dash panel: Fuse box cov-
er
Fig. 177 Fuse box cover
in engine compartment Fuse cover underneath the steering wheel
–
Switch off the ignition and the component concerned.
– Identify the fuse corresponding to the damaged electric con-
sumer ⇒ page 257.
– Take the plastic clip from inside the fuse cover, fit it onto the
blown fuse and pull the fuse out.
– Replace the blown fuse (which will have a melted metal strip)
with a new fuse of the same ampere rating.
Fuse cover in engine compartment
– Switch off the ignition and its failed electrical component.
– Prise off the fuse cover in the engine compartment by pressing
the tabs towards the centre of the cover ⇒ fig. 177.
– Identify the fuse for the failed component ⇒ page 257.
– Take the plastic clip from inside the fuse cover (at left-hand end
of the dash panel), fit it onto the blown fuse and pull the fuse
out.
– Replace the blown fuse (which will have a melted metal strip)
with a new fuse of the same ampere rating.
– Carefully fit the fuse cover back on to ensure no water can enter
the fuse box.
The individual electrical circuits are protected by fuses. The fuses are loca-
ted behind a cover at the left-hand end of the dash panel and on the left-
hand side of the engine compartment.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications
257
If and when
Fuses on left side of dash panel
Fuses
NumberConsumerAmps1Vacant 2Vacant 3Vacant 4Vacant 5Vacant 6Vacant 7Vacant 8Vacant 9Airbag510RSE input (roof screen)1011Vacant 12Left xenon headlight10
13Instrument panel (oil level)/Cable control unit
(BCM)/Heater/ABS, ESC (ESP)/Park Pilot/Gate-
way/Flow meter5
14Gearbox/Power steering/Brake light sensor/Trail-
er/ABS, ESC (ESP)/Haldex/Light switch10
15Heated windscreen / Instrument lighting / Diag-
nosis switchboard/Engine management/Addi-
tional heating/AFS headlights/Park Pilot10
16Right xenon headlight1017Engine management1018Vacant 19Vacant
20Park Pilot (parking aid)/Gear lever/ESC (ESP) con-
trol unit10
21Vacant
NumberConsumerAmps22Volumetric alarm sensor/ Alarm horn523Diagnosis / Rain sensor / Light switch1024Trailer hook pre-installation assistant1525Vacant 26Vacuum pump2027RSE input (roof screen)1028Rear window wiper motor2029Vacant 30Cigarette lighter / socket2031Vacant 32Vacant 33Heater4034Vacant 35Vacant 36Vacant 37Vacant 38Vacant 39Trailer control unit (coupling)15
40Trailer control unit (turn signals, brakes and left
side)20
41Trailer control unit (fog light, reverse light and
right side)20
42BCM wiring switchboard2043Trailer pre-installation4044Heated rear window2545Electric windows (front)3046Rear electric windows3047Engine (Fuel control unit, petrol relay)1548Convenience controls20
Safety FirstOperating InstructionsPractical TipsTechnical Specifications
258If and when
NumberConsumerAmps49Heating controls4050Heated seats3051Sunroof2052Headlight washer system2053Trailer hook pre-installation assistant2054Taxi (taximeter power supply)555Trailer hook pre-installation assistant2056Taxi (transmitter power supply)1557 58Central locking control unit30
Some of the electrical items listed in the table are only fitted on certain
models or are optional extras.
Please note that the above list, while correct at the time of printing, is sub-
ject to alterations. If discrepancies should occur, please refer to the sticker
on the inside of the fuse cover for the correct information for your model.
Fuses layout, engine compartment, left part
Fuses
NumberConsumerAmps1Windscreen wipers202DQ200 gearbox303Cable control unit54ABS205AQ gearbox156Instrument panel/Steering column57Ignition key40
NumberConsumerAmps8Radio159Telephone/TomTom Navigator5
10Engine management5Engine management1011Vacant 12Electronic control unit5
13Petrol injection module supply15Diesel injection module supply3014Coil20
15Engine management5Pump relay1016Right lighting3017Horn1518Vacant 19Clean30
20Water pump10Pressure sensor pump for 1.8 engine2021 a)Lambda probe1522Brake pedal, speed sensor5
23a)Engine management5Engine management10Engine management1524AKF, gearbox valve1025a)ABS pump4026Left lighting30
27a)Engine management40Engine management5028Vacant
268If and when
Sun visor light
Fig. 195 Removing sun
visor light
Fig. 196 Removing sun
visor light
– Carefully remove the lamp, using the flat side of the screwdriv-
er, as shown in the figure ⇒ fig. 196. –
Remove the bulb, moving it in the direction of the arrow and
outwards ⇒ fig. 196.
Jump-starting
Jump leads
The jump lead must have a sufficient wire cross section. If the engine fails to start because of a discharged battery, the battery can
be connected to the battery of another vehicle to start the engine.
Jump leads
Jump leads must comply with standard DIN 72553 (see manufacturer's doc-
umentation). The wire cross section must be at least 25 mm 2
for petrol en-
gines and at least 35 mm 2
for diesel engines.
Note
● The vehicles must not touch each other, otherwise electricity could flow
as soon as the positive terminals are connected.
● The discharged battery must be properly connected to the vehicle elec-
trical system.
269
If and when
How to jump start: description
Fig. 197 Diagram for
connecting jump leads if
the vehicle providing as-
sistance the current is
not fitted with the Start-
Stop system: flat battery A
and battery providing
current B.
Fig. 198 Diagram for
connecting jump leads if
the vehicle providing as-
sistance is fitted with the
Start-Stop system: flat
battery A
and battery
providing current B.
Jump lead terminal connections
1. Switch off the ignition of both vehicles ⇒
.2. Connect one end of the
red jump lead to the positive terminal
⇒ fig. 197 +
or ⇒
fig. 198 + of the vehicle with the flat bat-
tery A.
3. Connect the other end of the red jump lead to the positive ter-
minal +
in the vehicle providing assistance B.
4. On vehicles with no Start-Stop system , connect one end of the
black jump lead to the negative terminal -
in the vehicle pro-
viding assistance B ⇒ fig. 197.
5. On vehicles with the Start-Stop system , connect one end of the
black jump lead X
to a suitable ground terminal, to a solid
metal part bolted to the engine block or to the engine block it-
self ⇒ fig. 198.
6. Connect the other end of the black jump lead X
to a solid met-
al component bolted to the engine block or to the engine block
itself of the vehicle with the flat battery. Do not connect it to a
point near the battery A
.
7. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
8. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
9. Start the engine of the vehicle with the flat battery and wait one or two minutes until the engine is running.
Removing the jump leads
10. Before you remove the jump leads, switch off the headlights (if they are switched on).
Safety FirstOperating InstructionsPractical TipsTechnical Specifications