
Checking and refilling levels
228charge. Never short the battery terminals. High-energy sparks can cause
injury.•
A highly explosive mixture of gases is released when the battery is
under charge. The batteries should be charged in a well-ventilated room
only.
•
Keep children away from acid and batteries.
•
Before working on the electrical system, you must switch off the
engine, the ignition and all consumers. The negative cable on the battery
must be disconnected. When a light bulb is changed, you need only switch
off the light.
•
Deactivate the anti-theft alarm by unlocking the vehicle before you
disconnect the battery! The alarm will otherwise be triggered.
•
When disconnecting the battery from the vehicle electrical system,
disconnect first the negative cable and then the positive cable.
•
Switch off all electrical consumers before reconnecting the battery.
Reconnect first the positive cable and then the negative cable. Never
reverse the polarity of the connections. This could cause an electrical fire.
•
Never charge a frozen battery, or one which has thawed. This could
result in explosions and chemical burns. Always replace a battery which
has frozen. A flat battery can freeze at temperatures around 0°
•
Ensure that the vent hose is always connected to the battery.
•
Never use a defective battery. This may be fatally explosive. Replace a
damaged battery immediately.Caution
•
Never disconnect the battery if the ignition is switched on or if the engine
is running. This could damage the electrical system or electronic compo-
nents.
•
Do not expose the battery to direct sunlight over a long period of time, as
the intense ultraviolet radiation can damage the battery housing.
•
If the vehicle is left standing in cold conditions for a long period, protect
the battery from frost. If it “freezes” it will be damaged.
Checking the electrolyte level
The electrolyte level should be checked regularly in high-
mileage vehicles, in hot countries and in older batteries.– Open the bonnet and open the battery cover at the front ⇒ in
“Safety instructions on working in the engine compartment” on
page 213 ⇒ in “Warnings on handling the battery” on
page 227.
– Check the colour display in the "magic eye" on the top of the battery.
– If there are air bubbles in the window, tap the window gently until they disperse.The position of the battery is show n in the corresponding engine compart-
ment diagram ⇒page 273.
The round window (“magic eye”) on the top of the battery changes colour,
depending on the charge level and electrolyte level of the battery.
If the colour in the window is colourless or bright yellow, the electrolyte level
of the battery is too low. Have the battery checked by a qualified workshop.
The colours green and black are used by the workshops for diagnostic
purposes.
WARNING (continued)
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If and when
238If and whenTools, tyre repair kit and spare wheelVehicle To ols
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 onboard tools out of the vehicle.The tool kit includes:•
Jack*
•
Hook for removing wheel covers* or hub caps*
•
Box spanner for wheel bolts*
•
Reversible screwdriver with handle (including hexagonal interior) for the
wheel bolts. The screwdriver is a combination tool.
•
To wi ng e ye
•
Adapter for the anti-theft wheel bolts*
Some of the items listed are only prov ided in certain models / model years,
or are optional extras.
WARNING
•
Do not use the hexagonal socket in the screwdriver handle to tighten
the wheel bolts as with this it is not possible to tighten the bolts to the
required torque. Risk of accident.
•
The jack* supplied by the factory 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.
•
Never start the engine when the vehicle is on the jack. Risk of accident.
•
I f wo r k is t o b e ca r r i e d o u t un d e r n ea th the vehicle, this must be secured
by suitable stands. Otherwise, there is a risk of injury.WARNING (continued)
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If and when
240reliably 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
possible with the sealing compound.
Wheel changePreparation 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 ve hicle. 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.
– Engage the first gear, or put the selector lever to position P for
those vehicles with an automatic gearbox.
– If you are towing a trailer, unhitch it from your vehicle.
– Take the vehicle tools and the spare wheel out of the luggage
compartment.
WARNING
Put the hazard warning lights on and place the warning triangle in position.
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.
Note
Please observe legal requirements when doing so.Changing a wheelChange the wheel as described below
–Pull off the hub cap. Also see ⇒page 241.
– Slacken the wheel bolts.
– Raise the car with the jack in the corresponding zone.
– Remove the wheel and then mount the spare wheel
– Lower the vehicle.
– Tighten the wheel bolts firmly with the box spanner.
–Replace the hub cap.
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If and when249
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
FusesChanging a fuse
Blown fuses must be replaced
Fuse cover underneath the steering wheel
– Switch off the ignition and the component concerned.
– Identify the fuse for the failed component ⇒page 251.
– 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. 179.
– Identify the fuse for the failed component ⇒page 251.
– Take the plastic clip from inside the fuse cover (at left-hand end of the dash panel), fit it onto th e 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 pr otected by fuses. The fuses are located
behind a cover at the left-hand end of the dash panel and on the left-hand
side of the engine compartment.
The electric windows are protected by circuit breakers. These reset automat-
ically after a few seconds when the overload (caused for example by frozen
windows) has been corrected.
Fig. 178 Left side of dash
panel: Fuse box coverFig. 179 Fuse box cover
in engine compartment
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If and when
252Some 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 subject
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 partFuses
40
Trailer control unit (indicators, brakes and left
side)
20
41
Trailer control unit (fog light, reversing light and
right side)
20
42
BCM wiring switchboard
20
43
Trailer pre-installation
40
44
Rear window heater
25
45
Electric windows (front)
30
46
Rear electric windows
30
47
Engine (Fuel control unit, petrol relay)
15
48
Convenience controls
20
49
Heating controls
40
50
Heated seats
30
51
Sunroof
20
52
Headlight washer system
20
53
Vacant
20
54
Taxi (taximeter power supply)
5
55
Vacant
20
56
Taxi (taximeter power supply)
15
57
Vacant
58
Central locking control unit
30
Number
Consumer
Amps
Number
Consumer
Amps
1
Windscreen wipers
20
2
DQ200 gearbox
30
3
Cable control unit
5
4
ABS
20
5
AQ gearbox
15
6
Instrument panel/Steering column
5
7
Ignition key
40
8
Radio
15
9
Telephone/TomTom Navigator
5
10
Engine management
5
Engine management
10
11
Va ca n t
12
Electronic control unit
5
13
Petrol injection module supply
15
Diesel injection module supply
30
14
Coil
20
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If and when263
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
How to jump start: description⇒fig. 199 shows the flat battery and the charged battery.
Jump lead terminal connections
– Switch off the ignition on both vehicles ⇒.
1. Connect one end of the red jump lead to the positive ⇒fig. 199
terminal of the vehicle with the flat battery ⇒.
2. Connect the other end of the red jump lead to the positive terminal in the vehicle providing assistance.
3. Connect one end of the black jump lead to the negative terminal on the battery of the vehicle providing assistance. 4. Connect the other end of the black jump lead to a solid metal
component which is bolted on to the engine block, or onto the
engine block itself of the vehicle with the flat battery. Do not
connect it to a point near the battery ⇒.
5. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
6. Start the engine of the vehicle with the boosting battery and let
it run at idling speed.
7. Start the engine of the car with the flat battery and wait one or two minutes until the engine is “running”.
Removing the jump leads
8. Before you remove the jump leads, switch off the headlights (if they are switched on).
9. Turn on the heater blower and rear window heater in the vehicle with the flat battery. This helps minimise voltage peaks which are
generated when the leads are disconnected.
10. When the engine is running, disconnect the leads in reverse order to the details given above.
Connect the battery clamps so they ha ve 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.
Fig. 199 How to connect
the jump leads
AA
AB
A+
A+
A-
AX
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If and when
264
WARNING
•
Please note the safety warnings referring to working in the engine
compartment ⇒page 213, “Working in the engine compartment”.
•
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, danger
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 atta ched 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.Note
The vehicles must not touch each other, otherwise electricity could flow as
soon as the positive terminals are connected.
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General notes on the technical data
270Vehicle identification data
The most important data are given on the type plate and the
vehicle data sticker.Vehicles for certain export countries do not have a type plate.
Type plate
The type plate is located on the left rib inside the engine compartment.
Vehicle identification number
The vehicle identification number (chass is number) can be read from outside
the vehicle through a viewer in the windscreen. This is located on the left-
hand side of the vehicle in the lower area of the windscreen. It is also located
on the right hand side of the engine compartment. Vehicle data
The data sticker is placed on the inside of the spare wheel recess in the
luggage compartment.
The following information is provided on the vehicle data sticker:
⇒fig. 202 .
These data are also provided in the Maintenance Program. Production control number
Vehicle identification number (chassis number)
Model code number
Model designation / engine power output
Engine and gearbox code letters
Paintwork number / interior trim code
Optional equipment codes
Consumption values
CO
2 emissions values.
Data from 2 to 9 are also provided in the Maintenance Program.
Consumption figures and CO
2
Consumption (litres/100 km) / CO
2 emissions (g/km) urban.
Consumption (litres/100 km) / CO2 emissions (g/km) road.
Consumption (litres/100 km) / CO2 emissions (g/km) combination.
Fig. 202 Vehicle data
sticker – boot
A1A2A3A4A5A6A7A8A9AAABAC
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