Wheels and Tyres223
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
setting off on a long trip. Please do not
forget the spare wheel when checking the
tyres.
The tyre inflation pressures for summer tyres are indicated on the inside of the fuel
filler flap ⇒ page 222, fig. 195 . The inflation pressures for winter tyres are 20 kPa
(0.2 bar) higher than those for summer tyres ⇒page 226.
The tyre pressure should be at the highest pressure specified for your vehicle at all
times.
The tyre inflation pressure of the emergency spare wheel R 18 is 420 kPa (4.2 bar).
Always check the inflation pressure of ty res when cold. Do not reduce the higher
pressure of warm tyres. Adapt the inflation pressure of the tyres accordingly if your
vehicle is carrying a significantly higher payload.
Driving style
Fast cornering, sharp acceleration and braking (squealing tyres) increase wear-and-
tear on your tyres.
Balancing wheels
The wheels of a new vehicle are balanced. There are a wide range of influences
when driving which may result in an im balance and which makes themselves felt
through vibration in the steering.
You should have the wheels rebalanced since any imbalance increases wear-and-
tear on the steering, the suspension and tyres. A wheel must also be rebalanced
when a new tyre is fitted and each time a tyre is repaired.
Wheel alignment errors
Incorrect wheel alignment at the front and rear will not only increase wear-and-tear
on the tyres but will also has an adverse effect on vehicle safety. Contact your
specialist garage if you notice any unusual tyre wear.
WARNING
•If the inflation pressure is too low, the tyre must perform a greater flexing
work. At higher speeds the tyre will warm up as a result of this. This can
result in tread separation and even a tyre blowout.
•Immediately replace the damaged rims or tyres.
For the sake of the environment
Tyres which are insufficiently inflated increase your fuel consumption.
Wear indicators
The base of the tread of the original tyres has wear indicators 1.6 mm high, installed
at right angles to the direction of travel. These wear indicators are located at 6 - 8
points depending on the make and are evenly spaced around the circumference of
the tyre ⇒fig. 196 . Markings on the walls of the tyres through the letters “TWI”,
triangular symbols or other symbols identify the position of the wear indicators.
A remaining tread of just 1.6 mm, measured in the grooves of the tread next to the
wear indicators, means that your tyres have reached their legally permissible
minimum tread depth.
WARNING
•You must have your tyres replaced with new ones at the latest when the
wear indicators have been worn do wn. The legally permissible minimum
tread depth should be observed.
•Worn tyres do not provide the necessary adhesion to the road surface at
high speeds on wet roads. One could experience “aquaplaning” (uncon-
trolled movements of the vehicle - “swimming” on a wet road surface).
Fig. 196 Tyre tread with wear
indicators
NKO B6 20.book Page 223 Wednesday, March 26, 2008 3:15 PM
Breakdown assistance231
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Spare wheel
The spare wheel lies in a well under the floor covering of the luggage compartment
and is fixed in place using special screws ⇒fig. 201 .
Before removing the spare wheel, you must take out the box with the vehicle tool
kit box ⇒page 230, fig. 200 .
One should check the inflation pressure in the spare wheel (at best when generally
checking the tyre air pressures - see sign on the fuel filler flap ⇒page 222) to
ensure that the spare wheel is always ready to use.
Temporary spare wheel
A warning label displayed on the rim of the temporary spare wheel indicates that
your vehicle is equipped with a temporary spare wheel.
Please observe the following notes when driving with a temporary spare wheel:
•After fitting on the wheel, the warning stic ker must not be concealed (e.g. by the
wheel trim).
•Do not drive with this spare wheel at more than 80 km/h - risk of accident. Avoid
accelerating at full throttle, sharp braking and fast cornering.
•The inflation pressure for this spare wheel is identical to the inflation pressure
of the standard tyres. The temporary spare wheel R 18 must have an inflation pres-
sure of 420 kPa (4.2 bar)!
•Use this spare wheel only to reach the nearest specialist garage as it is not
intended for continuous use.
•No other summer or winter tyres must be mounted on the rim of the spare
wheel R 18.
Changing a wheel
Preliminary work
The following steps should be carried out before actually changing the
wheel.
– If it is necessary to change a wheel, park the vehicle as far away as possible from the traffic flow. The place you choose should be level.
–Have all the occupants get out. While changing a wheel, the occu-
pants of the vehicle should not stan d on the road (e.g. behind a crash
barrier).
– Apply the handbrake firmly.
–Engage 1st gear or if your vehicle is fitted with an automatic gearbox,
position the selector lever into position P.
– If a trailer is coupled, uncouple it.
– Take the vehicle tool kit ⇒ page 230 and the spare wheel
⇒ page 231 out of the luggage compartment.
WARNING
•If you find yourself in flowing traffic switch on the hazard warning lights
system and place the warning triangle on the side of the road at the
prescribed distance from your vehicle while observing all national legal
provisions. In this way you are protecting not only yourself but also other
road users.
Fig. 201 Luggage compart-
ment: Spare wheel
NKO B6 20.book Page 231 Wednesday, March 26, 2008 3:15 PM
Fuses and light bulbs245
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Fuse assignment in the dash panel
Certain electrical components are only standard on certain vehicle model versions
or only suppliable as optional equipment for certain models.
No.Power consumerAmperes
1Diagnostic socket, engine cont rol unit, relay EKP, control
unit for EKP7,5
2Control unit for ABS, ESP, swit ch for tyre inflation pres-
sure-control system, brake sensor5
3Switch and control unit for airbag5
4WIV, parking light, dimming rear mirror, pressure sensor,
telephone preinstallation5
5Control unit for headlamp beam adjustment and head-
light swivel, control unit for parking aid5
6Instrument cluster, control unit for electromechanical
power steering, Haldex5
7Valve heating, air mass meter10
Fig. 216 Schematic repre-
sentation of the fuse carrier
in the dash panel
8Control unit for trailer detection5
9Relay for auxiliary heating5
10Adaptive left main headlight10
11Adaptive right main headlight10
12Central locking system of the front doors10
13Diagnostic socket, light switch, rain sensor, clock7,5
14Central locking system and bonnet lid15
15Central control unit - interior lights7,5
16The air conditioning system7,5
17Central locking system of the rear doors10
18Not assigned
19Not assigned
20ABS, ESP, Uphill-Start off-Assist5
21Not assigned
22Air blower for Climatronic40
23Front power window30
24Selector lever lock5
25Rear window heater
relay for auxiliary heating and ventilation25
30
26Power socket in the luggage compartment25
27Fuel pump relay,
Fuel pump relay, control unit for fuel pump, injection
valves15
20
28Not assigned
29Not assigned
30Not assigned
No.Power consumerAmperes
NKO B6 20.book Page 245 Wednesday, March 26, 2008 3:15 PM
Index
270
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Towing device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Towing protection monitoring . . . . . . . . . . . . . . . . . 46
towing vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Tow-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Tow-starting and towing vehicle
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . 128
Traction Control System . . . . . . . . . . . . . . . . . . . . . . 181
Traction control system (TCS) Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 General Maintenance . . . . . . . . . . . . . . . . . . . . 194
Transporting children safely . . . . . . . . . . . . . . . . . . 171
Tread depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Twindoor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Two-way radio systems . . . . . . . . . . . . . . . . . . . . . . 145
Tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Tyre inflation pressure Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Tyres Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
U
Underbody protection . . . . . . . . . . . . . . . . . . . . . . . 201
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Uphill-Start off-Assist . . . . . . . . . . . . . . . . . . . . . . . . 184
V
Vanity mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Ventilation Auxiliary ventilation . . . . . . . . . . . . . . . . . . . . . . 106
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
W
Warning lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Warning symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Warning triangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Washing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 with a high-pressure cleaner . . . . . . . . . . . . . . 198
Washing the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 197
Washing vehicle by hand . . . . . . . . . . . . . . . . . . . . 198
Wax treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Wheel Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Spare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Wheel trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222, 233
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Windows de-icing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Windscreen washer nozzles . . . . . . . . . . . . . . . . . . . . 65
Windshield washer fluid reservoir . . . . . . . . . . . . 220 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Windshield washer system . . . . . . . . . . . . . . . . . . . 220
Windshield wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Wiper blades
Replacing the wiper blades . . . . . . . . . . . . . . . . . 67
X
Xenon headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
NKO B6 20.book Page 270 Wednesday, March 26, 2008 3:15 PM