Wheels and Tyres
232
Winter tyresThe handling of your vehicl e will be significantly improved when driving on wintry
roads if you fit winter tyres. Summer tyres do not offer the same grip on ice, snow and
at temperatures below 7 °C because of thei r construction (width, rubber blend, tread
pattern). This particularly applies to vehicles which are equipped with low-profile
tyres or high-speed tyres (code index H or V on wall of tyre).
Winter tyres must be mounted on all four wheels to obtain the best handling charac-
teristics.
You must only fit those types of winter tyre which are approved for your vehicle. The
permissible sizes of winter tyres are stated in your vehicl e documents. Approvals may
differ because of na tional legislation.
Please remember that the tyres should be inflated to 20 kPa (0.2 bar) more than is the
case for summer tyres page 228, fig. 189.
Winter tyres no longer offer the same winter performance once the tyre tread has
worn down to a depth of about 4 mm.
Ageing also causes winter tyres to lose most of their winter performance properties -
even in cases where the remaining tread depth is still clearly more than 4 mm.
Speed restrictions apply to winter tyres as well as to summer tyres page 230,
.
You can fit winter tyres of a lower speed catego ry to your vehicle provided that you also
do not drive faster than the permissible maximum speed for such tyres, even if the
possible maximum speed of your vehicle is higher. The corresponding tyre category
can damage the tyres when exceeding the permissible maximum speed.
Please pay attention to the notes if you decide to fit winter tyres page 228.
You can also fit so-called “all-year tyres” instead of winter tyres.
Please contact your specialist garage if there are any points which are not clear who will
be able to provide you with information regarding the maximum speed for your tyres.
WARNING
You must on no account drive your car at more than the permissible maximum
speed for your winter tyres - risk of an accident resulting from tyre damage and
loss of control over your car.
For the sake of the environment
Fit your summer tyres on again in good time since summer tyres offer you better grip
and handling on roads which are free of snow and ice as well as ar temperatures below
7 °C - the braking distance is shorter, there is less tyre noise, tyre wear is reduced and
fuel consumption is reduced.
Note
Please observe the various differing legal requirements regarding tyres.Unidirectional tyres*The direction of rotation of the tyres is marked by arrows on the wall of the tyre. This
indicates the direction of rotation of the tyre, and it is essential that the tyres are fitted
on to run in this direction. Only then are the tyres able to provide the optimal proper-
ties in terms of grip, low nois e, wear-and-tear and aquaplaning.
Should it be necessary to fit on a spare wheel in exceptional cases with a tyre not dedi-
cated to the running direction or in oppo site running direction, please adopt a
cautious style of driving as the tyre is no longer able to provide optimal grip and
handling in such a situation. This particular ly important on wet roads. Please refer to
the additional instructions page 236, “Spare wheel*”.
You should have the defective tyre replaced as soon as possible and restore the correct
direction of rotation on all tyres.Snow chainsSnow chains must only be mounted on the front wheels.
When driving on wintry roads, snow chains improve not only traction, but also the
braking performance.
For technical reasons, it is only permissi ble to fit snow chains with the following
wheel/tyre combinations.
s3fg.2.book Page 232 Friday, April 30, 2010 12:17 PM
Breakdown assistance243
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
– Release the clutch particularly gently wh
en starting off or depress the accelerator
particularly gently if your vehicle is fitted with an automatic gearbox.
Driver of the towed vehicle– Switch the ignition on so that the steeri ng wheel is not blocked and you can also
operate the turn signal lights, the headlight flasher, the windscreen wipers and
windscreen washer system.
– Take the vehicle out of gear or move the selector lever into position N if your
vehicle is fitted with an automatic gearbox.
– Note that the brake servo unit and power steering only operate if the engine is running. You will require significantly grea ter physical force to depress the brake
pedal and to steer th e vehicle if the engine is not running.
– Ensure that the tow rope is always kept taught.
Tow rope or tow bar
A tow bar is safest way of towing a vehicle an d also minimizes any shocks. You can use
a tow rope only if a suitable tow bar is not available.
The tow rope must be elastic to protect the vehicle. Thus one should only use plastic
fibre rope or a rope made out of a similarly elastic material.
Only attach the tow rope to the towing eyes provided for this purpose page 243
and page 244.
Driving style
Towing another vehicle requires a certain am ount of practice. Both drivers should be
familiar with the particular points about to wing a vehicle. Unskilled drivers should not
attempt to tow in another vehicle or to be towed in.
One should be constantly vigi lant not to allow impermissibly high towing forces or
jerky loadings. There is always a risk of excessive stresses and damage resulting at the
points to which you attach the tow rope or tow bar when you attempt to tow a vehicle
which is not standing on a paved road.
Caution
If the gearbox of your vehicle no longer contains any oil because of a defect, your
vehicle must only be towed in with the driven wheels raised clear of the ground, or on
a special vehicle transporter or trailer.
Note
Please comply with any national legal provisions particularly regarding the
switched on signal systems, when towi ng in or tow-starting another vehicle.
The tow rope must not be twisted as it may in certain circumstances result in the
front towing eye being unscrewed out of your vehicle.
Front towing eye
The towing eye is stored in th e box for the vehicle tool kit.Fig. 203 Front bumper: Removing the cover / installing the towing eye– Take the cover out of the front bumper fig. 203 - left.
– Screw in the towing eye by hand to the left up to the stop fig. 203 - right and
tighten it as much as po ssible. For tightening, we recommend that you use for
example the wheel wrench*, the lashing eye of another vehicle or a similar object
which you can push through the eye.
– Put the cover in place after screwing out the towing eye again and press into place.
The cover must engage firmly.
s3fg.2.book Page 243 Friday, April 30, 2010 12:17 PM
Breakdown assistance
244Caution
The towing eye must always be screwed in fully and firmly tightened, otherwise the
towing eye can tear when to wing in or tow-starting!Rear towing eyeFig. 204 Rear bumper: Removing the cover / installing the towing eye– Press onto the bottom part of the cover in the rear bumper fig. 204 - left and
take it out.
– Screw in the towing eye by hand to the left up to the stop fig. 204 - right and
tighten it as much as possible. For ti ghtening, we recommend that you use for
example the wheel wrench*, the lashing eye of another vehicle or a similar object
which you can push through the eye.
– Put the cover in place after screwing out the towing eye again and press into place.
The cover must engage firmly.
Caution
The towing eye must always be screwed in fully and firmly tightened, otherwise the
towing eye can tear when to wing in or tow-starting!
Tow-starting a vehicleIf the engine does not start, we generally do not recommend to tow-start your vehicle.
One should attempt to start the engine using jump start cables page 241 or call on
the services of the SERVICE mobile.If your vehicle has to be towed– Engage 2nd or 3rd gear with the vehicle stationary.
– Depress the clutch pedal fu lly and keep it depressed.
– Switch on the ignition.
– Wait until both vehicles are moving then release the clutch pedal slowly.
– Depress the clutch pedal fully when the engine fires and take the vehicle out of
gear.
For technical reasons it is not possibl e to tow-start a car fitted with an automatic
gearbox .
WARNING
There is high risk of having an accident when tow-starting a vehicle, when for
example the towed vehicle r uns into the towing vehicle.
Caution
Vehicles which are fitted with a catalytic converter should not be tow-started over a
distance of more than 50 metres. Unburnt fu el may get into the catalytic converter and
damage it.Towing in a vehicle fitted with a manual gearboxPlease refer to the additional instructions page 242.
The vehicle can be towed in with a tow bar or a tow rope or with the front or rear
wheels raised. The maximum towing speed is 50 km/h.
s3fg.2.book Page 244 Friday, April 30, 2010 12:17 PM
Breakdown assistance245
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Towing of a vehicle with an automatic gearboxPlease refer to the additional instructions page 242.
The car can be towed in with a tow bar or a tow rope. Refer at the same time to the
following guidelines.
Move selector lever into N .
The maximum towing speed is 50 km/h.
The maximum permissible towing distance is 50 km. The gear oil pump does not
operate when the engine is not running; th e gearbox would not be adequately lubri-
cated at higher speeds and ov er longer towing distance.Caution
If the vehicle is towed in by a recovery vehicle, it should only be towed in with the front
wheels raised. If the vehicle is raised at rear, the automatic gearbox is damaged! (Does
not apply to the automatic gearbox DSG).
Note
The vehicle must be transported on a special vehi cle or trailer if it is not possible to tow
in the vehicle in the way described or if the towing distance is greater than 50 km.
s3fg.2.book Page 245 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs247
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Fuse cover in engine compartment
The fuse box in the engine compartment exists in two different versions.
You can determine which version your vehicle is fitted with after
removing the fuse cover at the location of the fuses.On some vehicles, the battery cover must be removed before removing the fuse cover
page 222.Removing fuse cover– Move the circlips fig. 206 as far as the stop, the symbol
appears behind the
circlip and remove the cover.
Installing fuse cover– Position the fuse cover on the fuse box and push the circlips as far as the stop -
the symbol
is visible behind the circlip.
Caution
When unlocking and locking the fuse cover, it must be pressed on the sides to the
box, otherwise damage can occur to the locking mechanism.
Carefully position the fuse cover in the engine compartment. If the cover was not
correctly positioned, water can get into the fuses and this results in a damage to the
vehicle!
Fuse assignment in engine compartment - version 1Certain electrical components are only stan dard on certain vehicle model versions or
only suppliable as optional equipment for certain models.
Fig. 206 Fuse cover in engine compart-
ment
AA
AA
No.
Power consumer
Amperes
F1
Front right main headlight, right rear light unit
30
F2
Valves for ABS
20
F3
Not assigned
F4
Not assigned
F5
Horn
15
F6
Not assigned
F7
Not assigned
F8
Not assigned
F9
Valves
10
F10
Not assigned
F11
Lambda probe
10
F12
Lambda probe
10
F13
Control unit for automatic gearbox
15
F14
Not assigned
F15
Coolant pump
10
Fig. 207 Schematic representation of
fuse box in engine compartment -
version 1
s3fg.2.book Page 247 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs
248
Fuse assignment in engine compartment - version 2
F16
Not assigned
F17
Instrument cluster, windshield wiper lever and turn signal
light lever
5
F18
Audio amplifier (sound system)
30
F19
Radio
15
F20
Phone
5
F21
Not assigned
F22
Not assigned
F23
Engine control unit
10
F24
Control unit for CAN databus
5
F25
Not assigned
F26
Not assigned
F27
Va lve for f uel d osi ng
15
F28
Engine control unit
15/25
F29
Main relay
5
F30
Control unit for auxiliary heating
20
F31
Front window wiper
30
F32
Not assigned
F33
Not assigned
F34
Not assigned
F35
Not assigned
F36
Not assigned
F37
Not assigned
F38
Radiator fan, valves
10
F39
Not assigned
F40
Not assigned
No.
Power consumer
Amperes
F41
Not assigned
F42
Not assigned
F43
Ignition
30
F44
Not assigned
F45
Not assigned
F46
Not assigned
F47
Front left main headlight, left rear light unit
30
F48
Pump for ABS
40
F49
Power supply for terminal 15 (ignition on)
50
F50
Not assigned
F51
Not assigned
F52
Power supply relay - terminal X
a)
40
F53
Accessory equipment
50
F54
Not assigned
a)In order not to drain the battery unnecessarily when starting the engine, the electrical compo-
nents of this terminal are automatically switched off.No.
Power consumer
Amperes
Fig. 208 Schematic representation of
fuse box in engine compartment -
version 2
s3fg.2.book Page 248 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs249
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Certain electrical components are only standard on certain vehicle model versions or
only suppliable as optional
equipment for certain models.
Fuse assignment in the dash panelCertain electrical components are only stan dard on certain vehicle model versions or
only suppliable as optional equipment for certain models.
No.
Power consumer
Amperes
F1
Not assigned
F2
Control unit for automatic gearbox DQ200
30
F3
Measuring circuit
5
F4
Va lve s for AB S
30/20
F5
Control unit for automatic gearbox DQ250
15
F6
Instrument cluster, windshield wiper lever and turn signal
light lever
5
F7
Power supply for terminal 15 (ignition on)
40
F8
Radio
15
F9
Phone
5
F10
Engine control unit, Main relay
5/10
F11
Control unit for auxiliary heating
20
F12
Control unit for CAN databus
5
F13
Engine control unit
15/20/30
F14
Ignition
20
F15
Lambda probe (petrol engine)
Glow plug system relay and fuel pump (diesel engine)
10
5
F16
Front right main headlight, right rear light unit
30
F17
Horn
15
F18
Audio amplifier (sound system)
30
F19
Front window wiper
30
F20
Va lve for f uel d osi ng
water pump
20
10
F21
Lambda probe
10/15/20
F22
Clutch pedal switch
5
F23
Relay
Valves
High pressure pump
5
10
15
F24
The radiator fan
10
F25
Pump for ABS
30/40
F26
Left main headlight
30
F27
Control unit for glow plug system
40/50
F28
Windscreen heater
50
F29
Accessory equipment
50
F30
Power supply relay - terminal X
a)
50
a)In order not to drain the battery unnecessarily wh en starting the engine, the electrical compo-
nents of this terminal are automatically switched off.No.
Power consumer
Amperes
Fig. 209 Schematic representation of
the fuse carrier in the dash panel
s3fg.2.book Page 249 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs
250No.
Power consumer
Amperes
1
Diagnostic socket, engine control unit, fuel pump relay,
fuel pump control unit
7,5
2
Control unit for ABS, ESP, switch for tyre air pressure con-
trol, brake sensor
5
3
Switch and control unit for airbag
5
4
WIV, parking light, dimming mirrors, pressure sensor, tele-
phone preinstallation
5
5
Control unit for headlamp beam adjustment and head-
light swivel, control unit for parking aid, control unit for
park assist
5
6
Instrument cluster, control unit for electromechanical
power steering, Haldex, selector lever lock, power supply
for data bus
5
7
Valve heating, air mass meter
10
8
Control unit for trailer detection
5
9
Relay for auxiliary heating
5
10
Adaptive left main headlight
10
11
Adaptive right main headlight
10
12
Not assigned
13
Diagnostic socket, light switch, rain sensor, clock
7,5
14
Central locking system and bonnet lid
15
15
Central control unit - interior lights
7,5
16
Air conditioning system
7,5
17
Not assigned
18
Not assigned
19
Not assigned
20
KESSY
5
21
KESSY ELV
7,5
22
Air blower for Climatronic
40
23
Front power window, central locking of the front doors
30
24
Selector lever lock
5
25
Rear window heater, relay for auxiliary heating and venti-
lation
30
26
Power socket in the luggage compartment
25
27
Fuel pump relay,
Fuel pump relay, control unit for fuel pump, injection
valves
15
20
28
Electric boot lid
30
29
Preparation for the aftermarket radio
5
30
Not assigned
31
Not assigned
32
Front power window, central locking system of the rear
doors
30
33
Electric sliding/tilting roof
25
34
Alarm, spare horn
5
35
front and rear lighter
25
36
Headlight cleaning system
20
37
Front seat heating
20
38
Heated rear seats
20
39
Not assigned
40
Fan air-conditioning system, re lay for auxiliary heating and
ventilation
40
41
Rear window wiper
10
42
Light switch
5
No.
Power consumer
Amperes
s3fg.2.book Page 250 Friday, April 30, 2010 12:17 PM