
236Checking and refilling levels
WARNING
Do not drive unless you have good visibility through all windows!
● The ignition must not be switched on while the front wiper arms are
in a raised position. The wipers would return to their park position and
damage the paintwork on the bonnet.
● To prevent smearing on the windscreen, the wiper blades should be
cleaned regularly using a window cleaner solution. If the wiper blades
are very dirty (e.g. insects etc.), they should be cleaned using a sponge
or cloth. Failure to do so could result in an accident.
● For safety reasons, the wiper blades should be changed once or twice
a year.
CAUTION
● Damaged or dirty windscreen wipers could scratch the windscreen.
● Never use fuel, nail varnish remover, paint thinner or similar products to
clean the windows. This could damage the windscreen wiper blades.
● Never move the windscreen wiper or windscreen wiper arm manually.
This could cause damage.
● Do not pull the windscreen wipers forward unless they are in the service
position. Otherwise the bonnet could be damaged. Brake fluid
Checking the brake fluid level
The brake fluid level can be checked visually.
Fig. 175 Engine com-
partment: markings on
brake fluid reservoir
The brake fluid level must be between the “Min” and “Max” ⇒ Fig. 175
markings.
The fluid level may drop slightly after a period of time due to the automatic
compensation for brake pad wear. This is quite normal.
However, if the level goes down noticeably in a short time, or drops below
the “Min” mark, there may be a leak in the brake system. If the fluid level in
the reservoir is too low, this will be indicated by the brake warning lamp
⇒ page 71 and
⇒ page 78. If this should happen,
take the vehicle to a spe-
cialised workshop immediately and have the brake system inspected.

253
If and when
wheels fitted on the vehicle because of the wheel/tyre dimensions, rubber
composition, tread pattern, etc. Therefore, note the following restrictions:
● The spare steel wheel is designed only for your vehicle model. Do not
attempt to mount the wheel on any vehicle but your own.
● Your vehicle will have different driving characteristics when the spare
steel rim wheel is mounted ⇒
.
● The spare wheel is only intended for temporary use after having a flat
tyre. Replace the spare wheel with a normal wheel that has the proper tyre
dimensions as soon as possible.
● If the size of the spare steel rim wheel is different to that of the other
wheels, it is unlikely that snow chains suitable for the other wheels will fit it.
WARNING
● After mounting the spare steel rim wheel, the tyre pressure must be
checked and corrected as soon as possible. The tyre pressure must corre-
spond to the vehicle load (consult the table containing the inflation pres-
sures). Otherwise there is danger of causing an accident. Use the highest
tyre pressure as indicated in the table.
● Do not drive faster than 80 km/h, as higher speeds can cause an acci-
dent.
● Avoid heavy acceleration, hard braking and fast cornering, as this
could cause an accident.
Changing a wheel
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 place (e.g. behind the roadside crash barrier).
– Apply the handbrake firmly.
– Engage first gear .
– When towing a trailer: Unhitch the trailer from your vehicle.
– Take the tools and the spare wheel ⇒ page 251 out of the lug-
gage compartment.
WARNING
If you have a puncture in heavy traffic, switch on the hazard warning
lights and place the warning triangle in a visible location. This is for your
own safety and also warns other road users.
CAUTION
If you have to change the tyre on a gradient, block the wheel opposite the
wheel being changed by placing a stone or similar object under it to prevent
the vehicle from rolling away.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

260If and when
Repairing a tyre
Fig. 187 Repairing a tyre
Preparations
– If you have a flat tyre or puncture, park the vehicle as far away
from the flow of traffic as possible.
– Apply the handbrake firmly to prevent the vehicle from moving
accidentally on slopes.
– Engage first gear .
– Check whether a repair is possible using the Tyre Mobility Sys-
tem ⇒ page 258.
– Ensure that all passengers leave the vehicle and move away
from the danger area ⇒
.
– Take the tyre sealant can and the compressor out of the lug-
gage compartment. –
Stick the “max. 80 km/h” adhesive, which is included with the
tyre sealant can, onto the instrument panel where the driver will
see it.
Filling the tyre
– Shake the tyre sealant can well.
– Screw the enclosed filling hose onto the sealant can as far as it
will go. This will automatically pierce the foil sealing the can.
– Take the valve cap off the tyre valve and use the enclosed valve
insert tool to unscrew the valve insert ⇒ Fig. 187.
– Place the valve insert onto a clean surface.
– Remove the sealing plug from the filling hose and insert the
hose into the tyre valve.
– Hold the tyre sealant can upside down and fill the complete
contents of the can into the tyre.
– Then disconnect the hose and screw the valve insert firmly back
into the tyre valve.
Inflating the tyre
– Screw the compressor filling hose onto the tyre valve and plug
the connector into the cigarette lighter.
– Pump the tyre up to 2.0 to 2.5 bar and monitor the pressure
shown on the pressure gauge.
– If the tyre pressure remains lower than the value specified
above drive the vehicle approx. 10 metres forwards or back-
wards, so that the sealant can spread evenly in the tyre. If the

263
If and when
Fuse assignment
This list shows the fuses which can be replaced relatively
easily by the owner.
No.ConsumerAmps1Air conditioner102Footwell lamps53Heated washer jets54Radiator fan55Parking aid, automatic gearbox106Air conditioner (air purity sensor), pressure sensor5
7Electronic Stability Control (ESC), brake light switch,
clutch pedal switch, steering angle sensor10
8Telephone59Lambda probe heater1010Adaptive headlights right5
11Airbag and disconnection of the front passenger air-
bag5
12Diagnostic socket1013Steering column unit1014Brake lights1015Instrument panel1016Vacant 17Tyre pressure control, rain/light sensor1018Adaptive headlights left519Start-Stop control unit1020Engine management1521Start/Stop battery power management522Vacant 23Vacant
No.ConsumerAmps24Central electrics unit for convenience equipment2025Heater blower3026Rear window heater3027Power socket for trailer (control unit)3028Fuel pump, auxiliary pump for diesel2029Radio, amplifier (with Start-Stop)2030Sliding/tilting sunroof20
31Diagnosis connection, automatic anti-dazzle interior
mirror, reverse light, automatic gearbox15
32Towing socket1533Lighter2034Rear electric windows3035Luggage compartment power socket*2036Wiper system30
37Pump for windscreen washer and headlight washer
system30
38Luggage compartment illumination, alarm1539Radio, amplifier (without Start-Stop)2040Horn2541230 volt socket3042Electronic Stability Control (ESC)2543Front electric windows3044Seat heating35
Some of the electrical items listed in the table are only fitted on certain
models or are optional extras.
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275
If and when
Changing tail light bulbs (on side panel)
Overview of tail lights
Fig. 207 Overview of tail
lights
Tail lights on side panel
● Brake light and side light
● Side lights
● Turn signal Overview of tail lights. LED lamps
Fig. 208 Overview of tail
lights
Tail lights on side panel
● Brake light and side light
● Side lights
● Turn signal
Note
● It is only possible to change the turn signal light.
● If the warning lamp for the side light and/or rear fog light (LED lights)
lights up, the tail light assembly should be replaced.
● The failure of the lamp is only shown when the LED function goes out
completely. Sometimes, a LED will stop working, without displaying the
warning as the function continues to operate.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

278If and when
Position of the bulbs
Pos.
⇒ Fig. 212Bulb function
ABrake light and side lightP21W LLBSide lightsP21W LLCTurn signalPY21W
Changing bulbs. LED lamps
All bulbs can be changed easily in the bulb holder.
Fig. 213 Position of the
bulb on the bulb holder.
Example: Left tail light in
side panel.
The bulb is secured with a bayonet fastener. The table below gives
an overview of the bulb positions.
– Lightly press the defective bulb into the bulb holder, then turn it
to the left and remove it. –
Fit the new bulb, pressing it into the bulb holder and turn it to
the right as far as it will go.
– Use a cloth to remove any fingerprints from the glass part of the
bulb.
– Check whether the new bulb is working.
– Re-install the bulb holder ⇒ page 278.
Position of the bulbs
Pos.
⇒ Fig. 213Bulb function
ATurn signalPY21W
Note
● It is only possible to change the turn signal light.
● If the brake light and/or side lights with LEDs have to be replaced, the
tail light must be replaced.
Fitting the bulb holder
The bulb holder is easy to fit. – Position the bulb holder on the tail light and align it so that it is
securely seated.
– Press the bulb holder into the tail light until it engages.
– Re-install the tail light unit ⇒ page 279.

287
If and when
– Connect one end of the red jump lead to the positive +
termi-
nal of the vehicle with the flat battery A ⇒ Fig. 230.
– Connect the other end of the red jump lead to the positive ter-
minal +
in the vehicle providing assistance B.
– Connect one end of the black jump lead X
to a suitable ground
terminal, a solid piece of metal in the engine block, or to the en-
gine block ⇒ Fig. 230.
– 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. However, connect it to
a point as far as possible from the battery A
.
4. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
5. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
6. 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
7. Before you remove the jump leads, switch off the headlights (if they are switched on).
8. Turn on the heater blower and heated rear window in the vehi- cle with the flat battery. This helps minimise voltage peaks
which are generated when the leads are disconnected.
9. When the engine is running, disconnect the leads in reverse or- der to the details given above. Connect the battery clamps so they have good metal-to-metal contact with
the battery terminals.
If the engine fails to start, switch off the starter after about 10 seconds and
try again after about half a minute.
WARNING
● Please note the safety warnings referring to working in the engine
compartment ⇒ page 227.
● The battery providing assistance must have the same voltage as the
flat battery (12V) and approximately the same capacity (see imprint on
battery). Failure to comply could result in an explosion.
● Never use jump leads when one of the batteries is frozen. Danger of
explosion! Even after the battery has thawed, battery acid could leak and
cause chemical burns. If a battery freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes away from batteries, dan-
ger of explosion. Failure to comply could result in an explosion.
● Observe the instructions provided by the manufacturer of the jump
leads.
● Do not connect the negative cable from the other vehicle directly to
the negative terminal of the flat battery. The gas emitted from the battery
could be ignited by sparks. Danger of explosion.
● Do not attach the negative cable from the other vehicle to parts of the
fuel system or to the brake line.
● The non-insulated parts of the battery clamps must not be allowed to
touch. The jump lead attached to the positive battery terminal must not
touch metal parts of the vehicle, this can cause a short circuit.
● Position the leads in such a way that they cannot come into contact
with any moving parts in the engine compartment.
● Do not bend over the batteries. This could result in chemical burns.
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289
If and when
Towing and tow-starting
Tow-starting
The use of jump leads is preferable to tow-starting.
We recommend that you do not tow-start your vehicle. Jump-start-
ing is preferable ⇒ page 285.
However, if your vehicle has to be tow-started:
– Engage the 2nd or the 3rd gear.
– Keep the clutch pressed down.
– Switch the ignition on.
– Once both vehicles are moving, release the clutch.
– As soon as the engine starts, press the clutch and move the
gear lever into neutral. This helps to prevent driving into the
towing vehicle.
WARNING
The risk of accidents is high when tow-starting. The vehicle being towed
can easily collide with the towing vehicle.
CAUTION
When tow-starting, fuel could enter the catalytic converter and damage it. General notes
Please observe the following points if you use a tow rope:
Notes for the driver of the towing vehicle
–
Drive slowly at first until the tow rope is taut. Then accelerate
gradually.
– Begin and change gears cautiously. If you are driving an auto-
matic vehicle, accelerate gently.
– Remember that the brake servo and power steering are not
working in the vehicle you are towing. Brake sooner than nor-
mal and pressing the pedal gently.
Notes for the driver of the towed vehicle
– Ensure that the tow rope remains taut at all times when towing.
Tow rope or tow bar
It is easier and safer to tow a vehicle with a tow bar. You should only use a
tow rope if you do not have a tow bar.
A tow rope should be slightly elastic to reduce the loading on both vehicles.
It is advisable to use a tow rope made of synthetic fibre or similarly elastic
material.
Attach the tow rope or the tow bar only to the towing eyes provided or a tow-
ing bracket.
Driving style
Towing requires some experience, especially when using a tow rope. Both
drivers should be familiar with the technique required for towing. Inexper-
ienced drivers should not attempt to tow.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications