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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.
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Vehicle care167Engine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover, lift it upwards
and remove.
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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.
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Vehicle care173
RF=Type: RunFlat15=Wheel diameter, inches88=Load index e.g. 88 is
equivalent to 567 kgT=Speed code letter
Speed code letter:
Q=up to 100 mphS=up to 112 mphT=up to 118 mphH=up to 130 mphV=up to 150 mphW=up to 168 mph
Tyre pressure
Check the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel. This also applies to vehicles
with tyre deflation detection system.
Remove the valve cap key from the
fuel filler flap and use it to unscrew the valve cap.
Tyre pressure 3 217 and on the label
on the inside of the fuel filler flap or on
the front right door frame.
The tyre pressure data refers to cold
tyres. It applies to summer and winter tyres.
Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and
fuel economy and will increase tyre
wear.
Tyre pressures differ depending on
various options. For the correct tyre
pressure value, follow the procedure
below:
1. Identify the engine identifier code.
Engine data 3 202.
2. Identify the respective tyre.
The tyre pressure tables show all
possible tyre combinations 3 217.
For the tyres approved for your
vehicle, refer to the EEC Certificate of
Conformity provided with your vehicle
or other national registration
documents.
The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
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Vehicle care179
2. Detach air hose from bracket andscrew onto sealant bottle
connection.
3. Position the sealant bottle on the bracket. Make sure that the bottle
does not fall.
4. Unscrew valve cap from defective
tyre.
5. Screw tyre inflation hose to valve.
6. Screw air hose onto compressor connection.
7. Switch on ignition. To avoid discharging the battery,
we recommend running the
engine.8. Press on/off switch on the compressor. The tyre is filled withsealant.
9. The compressor pressure gauge briefly indicates up to 6 bar whilstthe sealant bottle is emptying
(approx. 30 seconds). Then the
pressure starts to drop.
10. All of the sealant is pumped into the tyre. Then the tyre is inflated.
11. The prescribed tyre pressure should be obtained within
10 minutes. Tyre pressure
3 217 . When the correct pressure
is obtained, switch off the
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Vehicle care181
3. Remove the electrical connectioncable and air hose from the
stowage compartments on the
underside of the compressor.
4. Screw the compressor air hose to
the connection on the sealant
bottle.
5. Fit the sealant bottle into the retainer on the compressor.
Set the compressor near the tyre
in such a way that the sealant
bottle is upright.
6. Unscrew valve cap from defective
tyre.
7. Screw the filler hose to the tyre valve.
8. The switch on the compressor must be set to J.
9. Connect the compressor plug to
the power outlet or cigarette
lighter socket.
To avoid discharging the battery,
we recommend running the
engine.
10. Set the rocker switch on the compressor to I. The tyre is filled
with sealant.
11. The compressor pressure gauge briefly indicates up to 6 bar whilstthe sealant bottle is emptying
(approx. 30 seconds). Then the
pressure starts to drop.
Page 189 of 231

Vehicle care187Jump starting
Do not start with quick charger.
A vehicle with a discharged battery
can be started using jump leads and the 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.
Notice
Any deviation from the instructions
given in this paragraph may lead to
a temporary deactivation of the stop-
start system.
■ Never expose the battery to naked flames or sparks.
■ A discharged battery can already freeze at temperatures of 0 °C.
Defrost the frozen battery before
connecting jump leads.
■ Avoid contact with eyes, skin, fabrics and painted surfaces. The
fluid contains sulphuric acid which
can cause injuries and damage in
the event of direct contact.
■ Wear eye protection and protective
clothing when handling a battery.
■ Use a booster battery with the same voltage (12 Volts). 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 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 thejump starting process.
■ Apply the parking brake, transmission in neutral, automatic
transmission in P.
■ Open the positive terminal protection caps of both batteries.
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188Vehicle care
Lead connection order:1. Connect the red lead to the positive terminal of the booster
battery.
2. Connect the other end of the red lead to the positive terminal of the
discharged battery. The positive
terminal has a cover cap on it.
Undo the cap to access the
positive terminal.
3. Connect the black lead to the negative terminal of the booster
battery.
4. Connect the other end of the black
lead to a vehicle grounding point,
such as the engine block or an
engine mounting bolt. Connect as far away from the discharged
battery as possible, however at
least 60 cm.
Position the leads so that they cannot
catch on rotating parts in the engine
compartment.
To start the engine:
1. Start the engine of the vehicle providing the jump.
2. After 5 minutes, start the other engine. Start attempts should be
made for no longer than
15 seconds at an interval of
1 minute.
3. Allow both engines to idle for approx. 3 minutes with the leads
connected.
4. Switch on electrical consumers (e.g. headlights, heated rear
window) of the vehicle receiving
the jump start.
5. Reverse above sequence exactly when removing leads.
6. Close the cover over the positive pole.