Wheels and tyres231
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Wear indicators
The original tyres on your vehicle have 1.6 mm high “tread wear indicators”
⇒
page 230, fig. 173 , running across the tread. Depending on the make,
there will be six to eight of them evenly spaced around the tyre. Markings on
the tyre sidewall (for instance the letters “TWI” or other symbols) indicate the
positions of the tread wear indicators. The minimum tread depth required by
law is 1.6 mm (measured in the tread grooves next to the tread wear indica-
tors). Worn tyres must be replaced. Different figures may apply in export
countries ⇒.
Tyre pressure
Under-inflation or over-inflation will reduce the life of the tyres considerably
and also impair the car's handling. The inflation pressures are listed on a
sticker on the inside of the fuel tank flap.
Correct inflation pressures are very important, especially at high speeds. The
pressure should therefore be checked at least once a month and before
starting any long journey.
Tyre pressure monitoring (RKA+)*
Monitoring of the tyre pressures is based on the tyre pressures you have
stored. The tyre pressure monitoring syst em cannot function as intended if
you store tyre pressure settings for a normal load, but then drive with the
vehicle fully laden. The tyre pressure must be adapted to the actual load and
stored accordingly in the tyre pressure monitoring system ⇒page 229.
Driving style
Fast cornering, heavy acceleration and hard braking all increase tyre wear.
Changing wheels around
If the front tyres are worn considerably more than the rear ones it is advisable
to change them around as shown ⇒page 230, fig. 174 . All the tyres will then
last for about the same time. Wheel balance
The wheels on new vehicles are balanced. However, various factors encoun-
tered in normal driving can cause them to become unbalanced, which results
in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause excessive
wear on steering, suspension and tyres. A wheel must also be rebalanced
when a new tyre is fitted.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety of
the vehicle. If tyres show excessive wear, you should have the wheel align-
ment checked by an Authorised Service Centre.
WARNING
There is a serious danger of accidents if a tyre bursts during driving!•
The tyres must be replaced at the latest when the tread is worn down to
the tread wear indicators. Failure to do so could result in an accident. Worn
tyres do not grip well at high speeds on wet roads. There is also a greater
risk of “aquaplaning”
•
At continuously high speeds, a tyre with insufficient pressure flexes
more. This causes it to overheat. This can cause tread separation and tyre
blow-out. Risk of accident. Always observe the recommended tyre pres-
sures.
•
If tyres show excessive wear, you should have the running gear checked
by an Authorised Service Centre.
•
Keep chemicals such as oil, fuel and brake fluid away from tyres.
•
Damaged wheels and tyres must be replaced immediately!For the sake of the environment
Under-inflated tyres will increase fuel consumption.
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Index297
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Using child seats . . . . . . . . . . . . . . . . . . . . . . 46
Using seat belts . . . . . . . . . . . . . . . . . . . . . . . 21
Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Seat adjustment Lumbar support . . . . . . . . . . . . . . . . . . . . . . 133
Seat belt position Pregnant women . . . . . . . . . . . . . . . . . . . . . . 24
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Seat belt release . . . . . . . . . . . . . . . . . . . . . . . . . 25
Seat belt warning lamp . . . . . . . . . . . . . . . . . . . . 18
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Height adjustment . . . . . . . . . . . . . . . . . . . . . 25
Incorrectly fastened . . . . . . . . . . . . . . . . . . . . 26
Not worn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Warning lamp . . . . . . . . . . . . . . . . . . . . . . 18, 68
Seat belts cleaning . . . . . . . . . . . . . . . . . . . . . . 205
Seat belts protection . . . . . . . . . . . . . . . . . . . . . . 21
Seat heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Electric adjustment . . . . . . . . . . . . . . . . . . . 132
Electric backrest adjustment . . . . . . . . . . . 133
Manual adjustment . . . . . . . . . . . . . . . . . . . 130
Manual backrest angle adjustment . . . . . . 131
Moving the seat forwards and backwards . 130
Seat height adjustment . . . . . . . . . . . . . . . . 130
Self-directing headlights . . . . . . . . . . . . . . . . . . 118 faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Service indicator . . . . . . . . . . . . . . . . . . . . . . . . . 74 Servotronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Shoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Side lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Sitting position Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Front passenger . . . . . . . . . . . . . . . . . . . . . . . 11
Incorrect sitting position . . . . . . . . . . . . . . . . 14
Passengers . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Sitting position, occupants . . . . . . . . . . . . . . . . . 10
Ski bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Snow chains . . . . . . . . . . . . . . . . . . . . . . . 235, 281
Solar-powered blower/solar roof . . . . . . . . . . . 161
Spare keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Spare wheel Steel rim . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Speed warning . . . . . . . . . . . . . . . . . . . . . . . . 80, 81
Speed warning function . . . . . . . . . . . . . . . . . . . 81
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Steam jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Steering Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Manual steering wheel adjustment . . . . . . 162
Steering wheel controls . . . . . . . . . . . . . . . . . . . 90
Stopping the engine . . . . . . . . . . . . . . . . . . . . . 165 Sun roof
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Sun roof / deflector . . . . . . . . . . . . . . . . . . . . . . 108
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 Automatic close function . . . . . . . . . . . . . . 110
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Manual operation . . . . . . . . . . . . . . . . . . . . 111
Override function . . . . . . . . . . . . . . . . . . . . . 110
Supplementary heating . . . . . . . . . . . . . . . . . . 161
Switches in the driver's door Electric windows . . . . . . . . . . . . . . . . . . . . . 106
Symbols Red symbols in central display . . . . . . . . . . . 76
Yellow symbols in central display . . . . . . . . 78
TTailgateCentral locking system . . . . . . . . . . . . . . . . 100
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
TCS Funcionamiento . . . . . . . . . . . . . . . . . . . . . . 178
Technical modification s . . . . . . . . . . . . . . . . . . 206
The danger of not using the seat belt . . . . . . . . 20
The environment Heated rear window . . . . . . . . . . . . . . . . . . 123
Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Roof carriers . . . . . . . . . . . . . . . . . . . . . . . . . 145
Warming up the engine . . . . . . . . . . . . . . . . 164
Tightening torque of wheel bo lts . . . . . . . . . . . 281
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Index
298Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Tow starting
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186, 274 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 188
Notes on towing . . . . . . . . . . . . . . . . . 186, 187
Removable towing bracket . . . . . . . . . . . . . 189
Technical requirements . . . . . . . . . . . . . . . 186
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . 280
Towing bracket, fitting . . . . . . . . . . . . . . . . . . . 195
Towing eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Towing eyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Tow-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Traction control system How the system works . . . . . . . . . . . . . . . . 178
Trailer weights . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Trip recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Type plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Tyre Mobility System . . . . . . . . . . . . . . . . . . . . . 243
Tyre mobility system . . . . . . . . . . . . . . . . . . . . . 237
Tyre pressure . . . . . . . . . . . . . . . . . . . . 66, 89, 227 Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Tyre pressure monitoring . . . . . . . . . . . . . . . . . 228
Tyre pressure monitoring system . . . . . . . . . . . . 88
Tyre pressures . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Tyre repair kit Tyre Mobility System . . . . . . . . . . . . . . . . . . 243
Tyres and wheels Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 233
Tyres service life . . . . . . . . . . . . . . . . . . . . . . . . 230 Tyres tread depth . . . . . . . . . . . . . . . . . . . . . . . 231
Tyres with directional tread pattern . . . . . . . . . 227
UUnderbody maintenance . . . . . . . . . . . . . . . . . 202VVehicle data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Vehicle identification data . . . . . . . . . . . . . . . . 278
Vehicle identification number . . . . . . . . . . . . . 278
Vehicle Maintenance
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Vehicle modifications . . . . . . . . . . . . . . . . . . . . 206
Vehicle paintwork Products for vehicle maintenance . . . . . . . 197
Waxing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Vehicle washing . . . . . . . . . . . . . . . . . . . . . . . . 198
Ventilation slits . . . . . . . . . . . . . . . . . . . . . . . . . . 17WWarning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Warning lamps Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Anti-lock brake system . . . . . . . . . . . . . . . . . 67
Electronic differential lock . . . . . . . . . . . . . . 67
Electronic stabilisation programme . . . . . . . 68
Engine management (EPC) . . . . . . . . . . . . . . 69
Exhaust emission control system . . . . . . . . 66 Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Red symbols in central display . . . . . . . . . . 76
Seat belt warning lamp . . . . . . . . . . . . . . . . . 68
Yellow symbols in central display . . . . . . . . 78
Warning lamps - overview . . . . . . . . . . . . . . . . . 65
Washer fluid level . . . . . . . . . . . . . . . . . . . . . . . . 80
Washing by hand . . . . . . . . . . . . . . . . . . . . . . . 198
Washing with high pressure cleaners . . . . . . . 199
Wear indicators . . . . . . . . . . . . . . . . . . . . . . . . . 231
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227, 280 Changing a wheel . . . . . . . . . . . . . . . . . . . . 238
Why assume the correct sitting position? . . . . . 28
Why should head restraints be correctly adjusted? 13
Why wear seat belts? . . . . . . . . . . . . . . . . . . 19, 28
Why wear seatbelts? . . . . . . . . . . . . . . . . . . . . . . 18
Windows Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Windscreen washer system . . . . . . . . . . . . . . . 220
Windscreen wiper blades Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Windscreen wipers . . . . . . . . . . . . . . . . . . . . . . 125 Changing blades . . . . . . . . . . . . . . . . . . . . . 221
Rain sensor . . . . . . . . . . . . . . . . . . . . . . . . . 125
Washer jets . . . . . . . . . . . . . . . . . . . . . . . . . 125
Winter Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Winter conditions Defrost function . . . . . . . . . . . . . . . . . . . . . 156
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