Checking and refilling levels229
Safety FirstOperating instructionsTips and MaintenanceTe c h n i c a l D a t a heads must be used. This ensures that wheels are fitted securely and that the
brake system functions correctly.
In certain circumstances, you may not use wheel bolts from a different car -
even if it is the same model Ÿpage 202.
WARNING
If the wheel bolts are not tightened correctly, the wheel could become
loose while driving. Risk of accident.
•The wheel bolts must be clean and turn easily. Never apply grease or oil
to them.
•Use only wheel bolts which belong to the wheel.
•If the prescribed torque of the wheel bolts is too low, they could loosen
whilst the vehicle is in motion. Risk of accident! If the tightening torque is
too high, the wheel bolts and threads could be damaged.
Caution
The prescribed torque for wheel bolts for steel and alloy wheels is 120 Nm.
Winter tyres
Winter tyres will improve the vehicles handling on snow and
ice.
In winter conditions winter tyres will considerably improve the vehicles
handling. The design of summer tyres (width, rubber compound, tread
pattern) gives less grip on ice and snow.
Winter tyres must be inflated to a pressure 0.2 bar higher than the pressures
specified for summer tyres (see sticker on tank flap).
Winter tyres must be fitted on all four wheels.Information on permitted winter tyre sizes can be found in the vehicle's regis-
tration documents. Use only radial winter tyres. All tyre sizes listed in the
vehicle documentation also apply to winter tyres.
Winter tyres lose their effectiveness when the tread is worn down to a depth
of 4 mm.
The speed rating code Ÿpage 227, “New tyres and wheels” determines the
following speed limits Ÿ:
Q max. 99.42 mi/h
S max. 111.85 mi/h
T max. 118.06 mi/h
H max. 210 km/h
In some countries, vehicles that can exceed the speed rating of the fitted tyre
must have an appropriate sticker in the driver's field of view. These stickers
are available from your Authorised Service Centre. The legal requirements of
each country must be followed.
Do not have winter tyres fitted for unnecessarily long periods. Vehicles with
summer tyres handle better when the roads are free of snow and ice.
If you have a flat tyre, please refer to the notes on the spare wheel
Ÿpage 227, “New tyres and wheels”.
WARNING
The maximum speed for the winter tyres must not be exceeded. Otherwise,
this could lead to tyre damage and thus, an accident risk.
For the sake of the environment
Fit your summer tyres in good time. They are quieter, do not wear so quickly
and reduce fuel consumption.
If and when 240
Note
The hexagonal socket in the screwdriver handle should be used for turning
wheel bolts only. Do not use it to loosen or tighten the wheel bolts.
Changing a wheel
Removing the wheel
– Using the hexagonal socket in the screwdriver handle, unscrew
the slackened wheel bolts and place them on a clean surface.
– Take off the wheel.
– Store the defective wheel as described on Ÿpage 233.
Fitting the spare wheel
– Put the spare wheel in place.
– Screw in the wheel bolts and tighten them lightly using the
hexagonal socket.
– Lower the vehicle on the jack.
– Tighten the wheel bolts firmly using the box spanner. Do not
tighten the bolts in clockwise or anti-clockwise sequence.
Tighten them in diagonal sequence.
Tyres with directional tread pattern
Tyres with directional tread pattern must be mounted so that they rotate in the
correct direction.
A directional tread pattern can be identified by arrows on the sidewall that
point in the direction of rotation. Always observe the direction of rotation indicated when mounting the wheel. This is important so that these tyres can
give maximum grip and avoid excessive noise, tread wear and aquaplaning.
If, in an emergency, you have to mount a wheel so it rotates in the wrong
direction, you must drive extremely carefully. The tyre will not give optimum
performance. This is particularly important when driving on wet roads. To
benefit from the advantages of tyres with directional tread pattern, the tyre
should be replaced as soon as possible so that it rotates in the correct direc-
tion.
Caution
•The wheel bolts should be clean and turn easily. Do not grease or oil them.
•The hexagonal socket in the screwdriver handle should be used for
turning wheel bolts only. Do not use it to loosen or tighten the wheel bolts.
After changing a wheel
– Place the wheel with the defective tyre in the spare wheel
bracket Ÿ page 233.
– Have the flat tyre replaced as quickly as possible.
– Have the tightening torque of the wheel bolts checked as soon as
possible with a torque wrench Ÿpage 240.
– Check tyre pressure at the next opportunity.
– Avoid fast driving manoeuvres.
If and when241
Safety FirstOperating instructionsTips and MaintenanceTe c h n i c a l D a t a
WARNING
•If the prescribed torque of the wheel bolts is too low, they could loosen
whilst the vehicle is in motion. Risk of accident! If the tightening torque is
too high, the wheel bolts and threads could be damaged.
Caution
The stipulated torque for the wheel bolts on steel wheels and alloy wheels is
170 Nm with a tolerance of ±10 Nm. You should visit a specialised workshop
as soon as possible to check the torque with a torque wrench.
Note
•The wheel bolts should be clean and turn easily. Do not grease or oil them.
•The hexagonal socket in the screwdriver handle should be used only for
turning wheel bolts which have been slackened off. Do not use it to loosen or
tighten the wheel bolts.
•If you notice that the wheel bolts are corroded and difficult to turn when
changing a wheel, they must be replaced before you have the tightening
torque checked.
•If the spare tyre is not the same as the tyres that are mounted on the car -
for example with winter tyres - you should only use the spare tyre for a short
period of time and drive with extra care. Refit the normal road wheel as soon
as possible.
•Have the flat tyre replaced as quickly as possible.
Fuses
Changing a fuse
– Use the fuse tables, to find out where, and in which fuse box, the
damaged fuse is located Ÿpage 242.
– Switch off the ignition and the component concerned.
– Remove the fuse box cover Ÿfig. 163
– Use the plastic pliers in the fuse box to remove the fuse.
– If the fuse has blown (the metal strip will have melted), replace it
with a new fuse of the same amp rating (same colour and same
imprint) and size.
The individual electrical circuits are protected by fuses. It is advisable to carry
several spare fuses at all times.
Fig. 163 Left side of dash
panel: fuse box
If and when 256
•Never start the engine when the vehicle is raised. Risk of accident. The
vehicle may fall from the platform due to the engine vibrations.
•When work is being carried out underneath the vehicle, it must be
secured using suitable frames. If not, an accident may occur.
•To lift the vehicle, only two-pillar or two-post lifting platforms with
sufficiently long arms and load-bearing capacity should be used.
•Lifting platforms with fluid filled cushions may not be used for lifting
the vehicle.
Caution
•The vehicle should never be lifted at the engine oil sump, the gearbox, or
the front or rear axle. This could cause serious damage to the vehicle.
•Before driving onto a lifting platform, you must check there is sufficient
clearance between low parts of the vehicle and the lifting platform.
WARNING (continued)
Technical Data 262
Te c h n i c a l D a t a
Checking fluid levels
From time to time, the levels of the different fluids in the
vehicle must be checked. Never fill with incorrect fluids, to do
so may cause serious damage to the engine.
Engine oil dipstick
Oil filler neck
Brake fluid reservoir
Vehicle battery (underneath a cover)
Coolant temperature deposit
Windscreen washer fluid reservoir
The checking and replenishment of the service fluids are carried out on the
components mentioned above. These operations are described in the
Ÿpage 209.Overview
Further explanations, instructions and restrictions on the technical data are
contained as of Ÿpage 257
Fig. 178 Diagram for the
location of the various
elements
A1
A2
A3
A4
A5
A6
Index 288
Belt tension devices . . . . . . . . . . . . . . . . . . . . . . 30
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Brake assist system . . . . . . . . . . . . . . . . . . . . . 180
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Brake pad wear
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 179
Brake pad wear indicator*
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 179, 185
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
brake servo . . . . . . . . . . . . . . . . . . . . . . . . . 179
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 76
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 179
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179, 185
Braking distance . . . . . . . . . . . . . . . . . . . . . . . . 185
Bulb change . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Bulb defect
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . . 76
Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
C
Car care
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Car care products . . . . . . . . . . . . . . . . . . . . . . . 193
Car phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Car washes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 186
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
CD changer
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 87
individual opening of doors . . . . . . . . . . . . . 88
Central locking button . . . . . . . . . . . . . . . . . . . . 90
Central stowage on instrument panel . . . . . . . 133
Cetane number . . . . . . . . . . . . . . . . . . . . . . . . . 207
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . 245
Changing a wheel . . . . . . . . . . . . . . . . . . . 236, 240
Changing brake pads . . . . . . . . . . . . . . . . . . . . 185
Changing bulbs
lights on tailgate/rear door . . . . . . . . . . . . 247
Lights on vehicle body . . . . . . . . . . . . . . . . 246
Reading light . . . . . . . . . . . . . . . . . . . . . . . . 249
Registration plate light . . . . . . . . . . . . . . . . 247
Changing gear
SeeManual gearbox . . . . . . . . . . . . . . . . . . 165
Changing the bulbs
interior light . . . . . . . . . . . . . . . . . . . . . . . . . 248
rear lights . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Changing the lamps
Side indicator lights . . . . . . . . . . . . . . . . . . 245
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 258
Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Checking battery electrolyte level . . . . . . . . . . 224
Checking engine oil level . . . . . . . . . . . . . . . . . 214
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Categorisation in groups . . . . . . . . . . . . . . . 47
Group 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Group 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Group 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Groups 0 and 0+ . . . . . . . . . . . . . . . . . . . . . . 47
in front passenger seat . . . . . . . . . . . . . . . . . 33
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 45
securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Childproof locks . . . . . . . . . . . . . . . . . . . . . . . . . 92
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . 140
Cleaning alloy wheels . . . . . . . . . . . . . . . . . . . . 198
Cleaning and caring for your vehicle . . . . . . . . 193
Cleaning chrome . . . . . . . . . . . . . . . . . . . . . . . . 197
Cleaning cloth seat covers . . . . . . . . . . . . . . . . 200
Cleaning dash panel . . . . . . . . . . . . . . . . . . . . . 199
Cleaning engine compartment . . . . . . . . . . . . . 199
Cleaning fabric trim . . . . . . . . . . . . . . . . . . . . . 200
Cleaning leather . . . . . . . . . . . . . . . . . . . . . . . . 200
Cleaning plastic parts . . . . . . . . . . . . . . . . . . . . 199
Cleaning seat belts . . . . . . . . . . . . . . . . . . . . . . 201
Cleaning steel wheels . . . . . . . . . . . . . . . . . . . . 197
Cleaning windows . . . . . . . . . . . . . . . . . . . . . . . 196
Cleaning wooden trim . . . . . . . . . . . . . . . . . . . . 200
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Air outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
General notes . . . . . . . . . . . . . . . . . . . . . . . 157
Second cooling system . . . . . . . . . . . . . . . 155
Index 290
Electronic differential lock . . . . . . . . . . . . . . . . 182
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 75
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 181
Electronic immobiliser . . . . . . . . . . . . . . . . 75, 162
Electronic stabilisation program . . . . . . . . . . . 182
Electronic stabilisation programme . . . . . . . . . . 74
Description . . . . . . . . . . . . . . . . . . . . . . . . . 160
warning lamp . . . . . . . . . . . . . . . . . . . . 161, 183
Electronic stabilisation programme (ESP)
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . . 74
Emergency opening
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Engine
Running in . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Engine compartment
Working in the engine compartment . . . . . 209
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . 216
Engine fault
monitor indicator . . . . . . . . . . . . . . . . . . . . . . 73
Engine hood
SeeBonnet . . . . . . . . . . . . . . . . . . . . . . . . . 211
Engine management
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 73
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Checking level . . . . . . . . . . . . . . . . . . . . . . . 214
Oil properties . . . . . . . . . . . . . . . . . . . . . . . . 213
Specifications . . . . . . . . . . . . . . . . . . . . . . . 212
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Engine oil dipstick . . . . . . . . . . . . . . . . . . . . . . . 214Engine oil pressure
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 77
Engine oil temperature display . . . . . . . . . . . . . 65
Engine oil temperature gauge . . . . . . . . . . . . . . 62
ESP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74, 182
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 183
Exhaust gas indicator . . . . . . . . . . . . . . . . . . . . . 74
Exhaust gas purification system
diesel particle filter . . . . . . . . . . . . . . . . . . . 187
Exhaust system fault* . . . . . . . . . . . . . . . . . . . . . 74
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . 119, 196
External aerial . . . . . . . . . . . . . . . . . . . . . . . . . . 203
F
Fastening rings . . . . . . . . . . . . . . . . . . . . . . 15, 143
Fastening seat belt . . . . . . . . . . . . . . . . . . . . . . . 22
Fault messages . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Faults in operation of air conditioning . . . . . . 157
First-aid kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Foot brake
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 73
Four-wheel drive . . . . . . . . . . . . . . . . . . . . . . . . 184
Replacing tyres . . . . . . . . . . . . . . . . . . . . . . 184
Snow chains . . . . . . . . . . . . . . . . . . . . . . . . 184
Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . 184Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Description . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Front passenger airbags . . . . . . . . . . . . . . . . . . . 43
Front seats
adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
safety instructions . . . . . . . . . . . . . . . . . . . 131
Fuel
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Fuel level
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Fuel reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
See alsoFuel reserve . . . . . . . . . . . . . . . . . . 76
Fuel tank cap . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Fuse box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
G
G 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Gear selector lever
SeeAutomatic gearbox . . . . . . . . . . . . . . . . 169
SeeAutomatic gearbox with Tiptronic . . . . 171
General overview of the engine compartment 262
Glove compartment . . . . . . . . . . . . . . . . . . . . . 133
Glove compartment light . . . . . . . . . . . . . . . . . 113
Glow plug system . . . . . . . . . . . . . . . . . . . . . . . 164
Index 292
Mobile phone . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Modifications . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Multifunction steering wheel . . . . . . . . . . . . . . . 84
N
Navigation system* . . . . . . . . . . . . . . . . . . . . . . . 83
Net bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Number of seats . . . . . . . . . . . . . . . . . . . . . . . . . 17
O
Observations . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Octane number . . . . . . . . . . . . . . . . . . . . . . . . . 207
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Oil properties . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
On board computer with multifunction display*
Check working . . . . . . . . . . . . . . . . . . . . . . . . 79
Message on display . . . . . . . . . . . . . . . . . . . 79
One-touch closing and opening
electric windows . . . . . . . . . . . . . . . . . . . . . 101
Overview
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . 70
Instrument panel . . . . . . . . . . . . . . . . . . . . . . 61
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Multifunction steering wheel . . . . . . . . . . . . 84
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . 70
P
Paintwork
Polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Waxing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Parking distance warning system . . . . . . . . . . 173
Parking lights . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Parts replacement . . . . . . . . . . . . . . . . . . . . . . . 202
Passenger compartment
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 155
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Trips to foreign countries . . . . . . . . . . . . . . 188
Petrol additives . . . . . . . . . . . . . . . . . . . . . . . . . 207
Physical principles of a frontal collision . . . . . . 19
Plastic key tab . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Plastic parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Pollen filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Power steering . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Preheating system
indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Puncture repair kit
storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
R
Raising the vehicle with the vehicle tool kit jack . .
239Reading lights . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Rear door
driving with the tailgate open . . . . . . . . . . . 98
Rear fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 73
warning light . . . . . . . . . . . . . . . . . . . . . . . . 108
Rear seats
characteristics of seat equipment . . . . . . . 126
moving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
safety instructions . . . . . . . . . . . . . . . . . . . 131
Rear window heating . . . . . . . . . . . . . . . . . . . . 115
Heating element wires . . . . . . . . . . . . . . . . 197
Rear window wiper . . . . . . . . . . . . . . . . . . . . . . 117
Rear-view mirror . . . . . . . . . . . . . . . . . . . . . . . . 118
Refilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Remote control key
Replacing the battery . . . . . . . . . . . . . . . . . . 95
Synchronising . . . . . . . . . . . . . . . . . . . . . . . . 94
Repairs
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Replacement keys . . . . . . . . . . . . . . . . . . . . . . . . 86
Replacing the battery
Remote control key . . . . . . . . . . . . . . . . . . . . 95
Replacing tyres
Four-wheel drive . . . . . . . . . . . . . . . . . . . . . 184
Retractor
SeeAutomatic belt retractor . . . . . . . . . . . . . 22
Retrofitting a towing bracket . . . . . . . . . . . . . . 204
Rev counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63