oil pressure SKODA ROOMSTER 2007 1.G Owner's Manual

Contents4
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description of the airbag system . . . . . . . . . . . . . . . Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Side airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Head airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Deactivating an airbag . . . . . . . . . . . . . . . . . . . . . . . .
Transporting children safely . . . . . . . . . . . . . . . . . . What you should know about transporting children! Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Attaching a child seat using the “ISOFIX” system*Attaching child seat using the “Top Tether” system
Driving Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intelligent Technology . . . . . . . . . . . . . . . . . . . . . . . . Electronic stability programme (ESP)* . . . . . . . . . . Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brake booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Antilock brake system (ABS)* . . . . . . . . . . . . . . . . . . Brake Assist* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrohydraulic power steering . . . . . . . . . . . . . . . Tyre inflation pressure-control system* . . . . . . . . . Diesel particle filter* (diesel engine) . . . . . . . . . . . .
Driving and the Environment. . . . . . . . . . . . . . . . . The first 1 500 kilometres and then afterwards . . Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . Driving in an economical and environmentally conscious manner . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environmental compatibility . . . . . . . . . . . . . . . . . . . Motoring abroad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Avoiding damage to your vehicle . . . . . . . . . . . . . .
To w i n g a t r a i l e r. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Maintenance. . . . . . . . . . . . . . .
Taking care of your vehicle and cleaning the vehicle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Care of the exterior of vehicle . . . . . . . . . . . . . . . . . .Care of the interior of vehicle . . . . . . . . . . . . . . . . . .
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting and Replenishing. . . . . . . . . . . . . . . . . . Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Windshield washer system . . . . . . . . . . . . . . . . . . . .
Wheels and Tyres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories, changes and replacement of partsAccessories and replacement parts . . . . . . . . . . . . . Technical changes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Breakdown assistance. . . . . . . . . . . . . .
Breakdown assistance . . . . . . . . . . . . . . . . . . . . . . . . First-aid box* and Warning triangle* . . . . . . . . . . . Fire extinguisher* . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tyre repair kit* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Spare wheel* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Jump-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tow-starting and towing vehicle . . . . . . . . . . . . . . .
Fuses and light bulbs. . . . . . . . . . . . . . . . . . . . . . . . . . Electric fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Praktik. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Praktik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lashing eyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable safety partition behind the front seatsFixing of the loading floor . . . . . . . . . . . . . . . . . . . . . .Adjustment of the safety partition . . . . . . . . . . . . . .Emergency unlocking of the loading area door . .
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . Used abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . .Performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Identification details . . . . . . . . . . . . . . . . . . . . . . . . . .Fuel consumption according to the regulations (99/100/EU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 l/51 kW - EU 4/EU 2DDK . . . . . . . . . . . . . . . . . . .1.4 l/63 kW - EU 4/EU 2DDK . . . . . . . . . . . . . . . . . . .1.6 l/77 kW - EU 4/EU 2DDK . . . . . . . . . . . . . . . . . . .1.4 l/51 kW TDI PD - EU 4 . . . . . . . . . . . . . . . . . . . . . .1.4 l/59 kW TDI PD - EU 4 . . . . . . . . . . . . . . . . . . . . . .1.9 l/77 kW TDI PD - EU 4 . . . . . . . . . . . . . . . . . . . . . .
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
128 128 130132133135
137 137 140143144
145
145 145 148148149149150150152
153 153 154
154 157158159
160 160
163
163 163 163168
170 170 170171
173 173 176178181182186
187 187
193 193 193
195
195 195 195196196196197202203
207 207 211
219
219 219 219220220221
223
223 223 223223223223
224 225226228230232234236
239
NKO A05R 20 MR08.book Page 4 Wednesday, March 28, 2007 9:42 AM

Instruments and Indicator/Warning Lights19
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistancePraktikTechnical Data
There is at least one error message to be read when the term VEH. STATUS is flashing in the main menu. The display will show STATUS 1/2 (for example) if a number of error messages are displayed. This display indicates that the first of a total of two error messages should be displayed.
Actuate the rocker switch , to call up the individual error messages.
If a fault occurs, a warning signal will also sound in addition to the symbol and text in the display:
•Priority 1 - three warning signals,
•Priority 2 - one warning signal.
Red symbols
A red symbol signals danger.
Proceed as follows if a red symbol is displayed:
– Stop the vehicle.
– Switch the engine off.
– Investigate the function indicated.
– Obtain professional assistance.
Meaning of the red symbols:
Three successive warning signals will sound if a red symbol appears.
If several operational faults of priority 1 exist, the symbols appear one after the other and are each illumi nated for about 5 seconds.
Yellow symbols
A yellow symbol si gnals a warning.
The meaning of the yellow symbols:
AA
Fig. 13 Information display: Oil pressure is low
Coolant level too low/coolant temperature too high⇒ page 24
Engine oil pressure too low ⇒page 25
Fuel level low⇒page 24
Check engine oil level, engine oil sensor faulty⇒page 25
Brake pad worn⇒page 25
Washer fluid level low⇒page 26
Fig. 14 Information display: Fuel level low
NKO A05R 20 MR08.book Page 19 Wednesday, March 28, 2007 9:42 AM

Instruments and Indicator/Warning Lights21
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistancePraktikTechnical Data
WARNING
•If you do not pay attention to the warning lights coming on and the corre- sponding descriptions and warning notes, this may result in severe body injuries or major vehicle damage.
•The engine compartment of your car is a hazardous area. There is a risk of injuries, scalding, accidents and fire when working in the engine
Turn signal lights (to the left)⇒page 22
Turn signal lights (to the right)⇒page 22
Main beam⇒page 22
Low beam⇒page 22
Rear fog light⇒page 22
Dynamo⇒page 22
Fog lights*⇒page 22
Cornering lights*⇒page 22
Electrohydraulic power steering⇒page 23
EPC fault light (petrol engine)⇒page 23
Glow plug system (diesel engine)⇒page 23
Turn signal system for vehicles towing a trailer*⇒ page 23
Coolant temperature/coolant level⇒page 24
Electronic immobiliser⇒page 24
Fuel reserve⇒page 24
Engine oil⇒page 25
Brake pad wear*⇒page 25
Open door*⇒page 25
Fluid level in windshield washer system*⇒page 26
Control system for exhaust⇒page 26
Tra c t i o n c o n t r o l s y s t e m ( TC S ) *⇒page 26
Tyre pressure*⇒page 26
Selector lever lock* (automatic gearbox)⇒page 27
Electronic stability programme (ESP)*⇒page 27
Antilock brake system (ABS)*⇒page 27
Brake system⇒page 28
Airbag system⇒page 28
Diesel particle filter* (diesel engine)⇒page 29
Seat belt warning light*⇒page 29
NKO A05R 20 MR08.book Page 21 Wednesday, March 28, 2007 9:42 AM

Instruments and Indicator/Warning Lights25
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistancePraktikTechnical Data
Engine oil 
The warning light  lights up red (low oil pressure)
The warning light comes on for a few seconds 2) when the ignition is switched on.
Stop the vehicle and switch the engine off if the warning light does not go off after the engine has started or flashes while driving. Check the oil level and top up with oil as necessary ⇒page 177.
3 peeps sound as an additional warning signal.
Do not continue your journey if for some reason it is not possible under the conditions prevailing to top up with oil. Keep the engine switched off and obtain professional assistance from a specialist garage, otherwise it could lead to severe engine damage.
Do not drive any further if the warning light flashes even if the oil is at the correct level. Do not run the engine not at idling speed either. Contact the nearest specialist garage to obtain professional assistance.
The following text will be displayed in the information display*:
STOP OIL PRESS. ENGINE OFF! OWNER'S MANUAL!
The warning light  lights up yellow* (oil quantity too low)
If the warning light lights up yellow, the quan tity of oil in the engine is probably too low. Check as soon as possible the oil level or top up ⇒page 177 with engine oil.
A peep sounds as an addi tional warning signal.
The following text will be displayed in the information display*:
CHECK OIL LEVEL
The warning light will go out if the bonnet is left open for more than 30 seconds. If no engine oil has been replenished, the warning light will come on again after driving about 100 km.
The warning light  flashes yellow* (engine oil level sensor faulty)
A fault on the engine oil level sensor is in dicated additionally by an audible signal and the warning light coming on several ti mes after the ignition has been switched on.
In this case have the engine inspecte d without delay by a specialist garage.
The following text will be displayed in the information display*:
OIL SENSOR WORKSHOP!
WARNING
•If you must stop for technical reasons, then park the vehicle at a safe distance from the traffic and switch off the engine and switch on the hazard warning light system ⇒page 47.
•The red oil pressure light  is not an oil level indicator! One should therefore check the oil level at regular intervals, preferably after every refu- eling stop.
•Pay attention to the following instructions ⇒page 174, “Working in the engine compartment” before checking the coolant fluid level and opening the bonnet.
Thickness of the brake pads* 
If the warning light  comes on, contact a specialist garage immediately and have the brake pads on all of the wheels inspected.
A peep sounds as an ad ditional warning signal.
The following text will be displayed in the information display*:
CHECK BRAKE PAD
Open door* 
The warning light  comes on if one or several doors, the bonnet or boot lid is opened.2)The warning light  on vehicles fitted with information display does not come on after switching the ignition on, but only if a fault exists or the engine oil level is too low.
NKO A05R 20 MR08.book Page 25 Wednesday, March 28, 2007 9:42 AM

Starting-off and Driving91
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistancePraktikTechnical Data
•Let go of the key as soon as the engine starts otherwise there may be damage to the starter.
The engine running noises may louder at first be louder for a short time after starting the cold engine until oil pressure can be built up in the hydraulic valve clearance compensation. This is quite normal and is not an operating problem.
If the engine does not start ...
You can use the battery of anothe r vehicle as a jump-start aid ⇒page 202.
It is only possible to tow-start vehicl es fitted with a manual gearbox. The tow- starting distance must not be more than 50 metres ⇒page 205.
WARNING
•Never run the engine in non ventilated or enclosed areas. The exhaust gases of the engine contain besides the odorless and colourless carbon monoxide a poisonous gas - hazard! Carbon monoxide can cause uncon- sciousness and death.
•Never leave your vehicle unattended with the engine running.
Caution
•The starter may only be operated (ignition key position ), if the engine is not running. If the starter is immediately oper ated after switching off the engine, the starter or the engine can be damaged.
•Avoid high engine revolutions, full throttle and high engine loads as long as the engine has not yet reached its normal oper ating temperature - risk of damaging the engine!
•Vehicles which are fitted wi th an exhaust gas catalytic converter should not be tow-started over a distance of more than 50 metres.
For the sake of the environment
Never warm up the engine when the vehicle is standing. Drive off right away. When driving the engine reaches its operating temperature more rapidly and the pollutant emissions are lower.
Petrol engines
These engines are fitted with a starter system which selects the correct fuel/air mixture for every external air temperature.
•Do not operate accelerator before and when starting engine.
•Interrupt the attempt at starting after 10 seconds if the engine does not start right awayand wait for about 30 seconds before repeating the attempt.
•It is possible that the fuse on the electric al fuel pump is defect if the engine still does not start. Check the fuse and replace it if necessary ⇒page 207.
•If the engine does not start, contact the nearest specialist garage to obtain professional assistance.
It may be necessary, if the engine is very hot, to slightly depress the accelerator after the engine has started.
Diesel engines
Glow plug system
Diesel engines are equipped with a glow plug system, the preglow period being controlled automatically in line with the coolant temperature and outside temper- ature.
The preglow indicator light  comes on after the ignition has been switched on.
You should not switch on any major electrical components during the heating period otherwise the vehicle battery will be drained unnecessarily.
•You should start the engine immediately after the glow plug warning light  has gone out.
•The glow plug warning light will come on for about one second if the engine is at a normal operating temperature or if the outside temperature is above +5°C. This means that you can start the engine right away.
•Interrupt the attempt at starting after 10 seconds if the engine does not start right awayand wait for about 30 seconds before repeating the attempt.
•It is possible that the fuse on the diesel preglow system is defect if the engine still does not start. Check the fuse and replace it if necessary ⇒page 207.
A3
NKO A05R 20 MR08.book Page 91 Wednesday, March 28, 2007 9:42 AM

Intelligent Technology148
Brakes
What has a negative effect on braking efficiency?
Wear-and-tear
Wear-and-tear to the brake pads is greatly dependent on the operating conditions of the vehicle and your style of driving. Particularly if you drive a great deal in towns and over short distances or if you adopt a sporty style of driving, it may be neces- sary to have the thickness of the brake pads inspected at a specialist garage between the service inspections.
Wet roads or road salt
There may be a certain delay before the brakes take full effect under certain condi- tions such as when driving through water, during heavy rain showers or after the vehicle has been washed in an automatic vehicle wash, since the brake discs and brake pads may be moist or even have a coating of ice on them in winter. You should dry the brakes as soon as possib le (by applying and releasing the brakes several times, if the road conditions and the traffic situation allows it).
There also may be a certain delay before the full braking efficiency is available when driving on roads which have been treated wi th road salt if you have not used the brakes for some considerable time beforeha nd. The layer of salt on the brake discs and brake pads must first be rubb ed off when you apply the brakes.
Corrosion
Corrosion on the brake discs and dirt on th e bake pads occur if the vehicle has been parked for a long period and if you do not make much use of the braking system.
We recommend cleaning the brake discs by firmly applying the brakes at a fairly high speed if you do not make much use of the braking system or if surface corro- sion is present ⇒.
Faults in the brake surface
If you notice that the braking distance has suddenly become longer and that the brake pedal can be depressed further, it is possible that a brake circuit of the dual- circuit brake system has failed. Drive, in such cases, to the nearest specialist garage without delay in order to have the problem rectified. Drive at a reduced speed while on your way to the dealer and adapt your style of driving to the higher brake pedal pressure required.
Low brake fluid level
An insufficient level of brake fluid may result in problems in the brake system. The level of the brake fluid is monitored electronically ⇒page 28, “Brake system ”.
WARNING
•Only apply the brakes for the purpose of drying and cleaning the brake discs if the traffic conditions permit this. Do not place any other road users in jeopardy.
•When retrospectively mounting a front spoiler, solid wheel hubs etc. one must ensure that the air supply to the front wheel brakes is not reduced otherwise the braking sy stem could run too hot.
•Allow for the fact that new brake pads do not achieve their full braking efficiency until approximately 200 kilo metres. New brake pads must be first “run in” before they develop their optimal friction force. You can, however, compensate for this slightly reduced braking force by increasing the pres- sure on the brake pedal. This guidelin e also applies to any new brake pads installed at a future date.
Caution
•Never allow the brakes to ru b by applying slight pressure if you do not wish to brake the vehicle. This causes the brakes to overheat and can also result in a longer braking distance and excessive wear.
•Before negotiating a steep downhill section, please reduce your speed and shift down into the next lower gear (manual ge arbox) or select a lower driving stage (automatic gearbox). This enables you to make full use of the braking power of the vehicle and reduces the strain on the brakes . Any additional braking should be done intermittently, not continuously.
Brake booster
The brake booster boosts the pressure which you generate with the brake pedal. The necessary pressure is only gene rated when the engine is running.
NKO A05R 20 MR08.book Page 148 Wednesday, March 28, 2007 9:42 AM

Taking care of your vehicle and cleaning the vehicle164
Automatic vehicle wash systems
The paintwork of the vehicle is sufficiently resistant that the vehicle can be washed normally in automatic vehicle wash plants without any problem. The actual stress to which the paintwork is subjected, howeve r, depends primarily on the design of the vehicle wash system, the filtering of th e water and the type of washing and care products used. If the paintwork of your vehicle appears mat after being washed or even has scratches, point this out to the operator of the vehicle wash plant. Use a different vehicle wash plant, if necessary.
There are no particular points to note be fore washing your vehicle in such a plant other than the usual precautionary meas ures (closing windows, moving any factory-fitted aerials down flat against the bodywork, etc.).
If you have any particular atta ch e d p a r t s f i t te d t o y o u r c a r - s u ch a s s p o i l e r, ro o f ra ck system, two-way radio aerial - it is best to first of all consult the operator of the car wash plant.
It is important to degrease the lips of the windscreen wiper rubbers after passing through the automatic vehicle wash system.
Caution
Do not screw the swivelling down roof aeri al tight before washing the vehicle in an automatic vehicle wash sy stem - risk of damage!
Washing vehicle by hand
It is important to first soften the dirt with plenty of water and rinse it off as thor- oughly as possible before wa shing your vehicle by hand.
One should then clean the vehicle using a soft washing sponge, washing glove or a washing brush and only slight pressure. Work from the top to the bottom - beginning with the roof. Only place slight pressure on the vehicle paintwork during cleaning Only use a car shampoo for stubborn dirt.
Wash out the sponge or washing glove thoroughly at short intervals.
Clean wheels, door sills and similar parts last. Use a second sponge for such areas.
Rinse off the vehicle well after giving it a wash and dry it off using a chamois leather.
WARNING
•The ignition should always be switched off when you wash your vehicle - risk of accident!
•Protect your hands and arms from sharp-edged metal parts when you are cleaning the underfloor, the inside of the wheel housings or the wheel trims - risk of cuts.
Caution
•Do not wash your vehicle in bright sunlight - risk of paint damage.
•Ensure that the jet of water is not aimed directly at the locks or at the door and panel joints if you spray your vehicle in winter down with a hose - risk of freezing.
•Do not use any insect sponges, rough kitchen sponges or similar cleaning prod- ucts - risk of damage to the surface of paintwork.
For the sake of the environment
Only wash your vehicle at washing bays specifically reserved for this purpose. This ensures that no water which may be cont aminated by oil flows into the sewage system. It is not even permitted to wash your vehicle in certain areas except at such specific washing bays.
Washing with a high-pressure cleaner
When you wash your vehicle with a high-pre ssure cleaner, it is essential to comply with the instructions for use of the cleaning equipment. This applies in particular to the pressure used and to the spraying distance. Maintain a sufficiently large distance to soft materials such as rubber hoses or insulation material.
On no account use circular spray nozzles or so-called dirt cutters!
NKO A05R 20 MR08.book Page 164 Wednesday, March 28, 2007 9:42 AM

Inspecting and Replenishing180
Losses can only occur through the pressure relief in the cap of the coolant expan- sion bottle which is completely free of leak s if the coolant boils as a result of over- heating and is forced out of the cooling system.
WARNING
Read and observe the warning notes ⇒page 174, “Working in the engine compartment” before working in the engine compartment.
Caution
One should contact a specialist garage as soon as possible if the source of over- heating itself cannot be determined and removed, since there may be grave damage to the engine.
Replenishing the coolant
– Switch the engine off.
– Allow the engine to cool down.
– Place a cloth over the cap of the coolant expansion reservoir
⇒ page 179, fig. 159 and unscrew the cap carefully by turning it to the
left ⇒.
– Top up the coolant.
– Screw the cap tight until it is heard to lock.
The coolant which you use for replenishing the system, must comply with one specific specification ⇒page 178, “Coolant”. Do not use an alternative additive if the coolant additive G12 PLUS is not availa ble in exceptional cases. Just top up the system with water and as soon as possible arrange adjustment to correct the mixing ratio of water and coolant additive again by a specialist garage.
Only use fresh coolant for topping up the system.
Do not fill up over the “MAX” marking! Excess coolant which is heated up is forced out of the cooling system through the pressure relief valve in the cap of the coolant compensation bottle.
Wait until the engine has cooled down for a system which has suffered a major loss of coolant before pouring in coolant. This is necessary to avoid engine damage.
WARNING
•The cooling system is pressurized! Do not open the cap of the coolant expansion bottle if the engine is still hot - risk of scalding!
•The coolant additive and thus all of the coolant is harmful to your health. Avoid contact with the coolant. Coolant vapours are also harmful to the health. It is important, therefore, to always safely store any coolant additive in its original container out of the reach of children - risk of poisoning!
•If any splashes of coolant get into yo ur eyes, rinse out your eyes immedi- ately with clear water and contact a doctor as soon as possible.
•You should also consult a doctor without delay if you have inadvertently swallowed coolant.
Caution
Do not continue your journey if for some reason it is not possible under the conditions prevailing to top up with coolant. Switch the engine off and obtain professional assistance from a specialist garage, otherwise it could lead to severe engine damage.
For the sake of the environment
Do not re-use coolant if it is necessary to drain the coolant in the system. It should be collected and disposed of in comp liance with environmental protection regulations.
NKO A05R 20 MR08.book Page 180 Wednesday, March 28, 2007 9:42 AM

Wheels and Tyres187
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistancePraktikTechnical Data
Wheels and Tyres
Wheels
General comments
•New tyres do not offer optimal grip at first and should therefore be run in for about 500 km at a moderate speed and an appropriately cautious style of driving. You will also profit from longer tyre life.
•The tread depth of new tyres may differ because of design features and the configuration of the tread (depending on the type of tyre and the manufacturer).
•Drive over curbs on the side of the road and other such obstacles slowly and, where possible, at a right angles in order to avoid damage to tyres and wheel trims.
•Inspect your tyres from time to time for damage (punctures, cuts, splits and bulges). Remove foreign bodies from the tyre profile.
•Damage to tyres and wheels is frequent ly not visible. Unusual vibrations or pulling of the vehicle to one side could be a sign of tyre damage. Please reduce your speed immediately and stop if you suspect that a wheel is damaged. Inspect the tyres for signs of damage (bulge s, splits, etc.) If no visible damage is present, please drive at an appropriatel y slow speed and carefully to the nearest specialist garage in order to have your vehicle inspected.
•Also protect your tyres from contact with oil, grease and fuel.
•Immediately replace any dust caps of the valves which have got lost.
•Mark wheels before removing them so th at their previous direction of running can be maintained when mounted them again.
•Always store wheels or tyres which been removed in a cool, dry and, where possible, dark place. Tyres which are not fixed to a wheel trim should be stored upright.
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 properties in terms of grip, low noise, wear-and-tear and aquaplaning.
Further information concerning the use of unidirectional tyres ⇒page 191.
WARNING
•New tyres during the first 500 km do not offer optimal grip and should therefore be run appropriately - risk of accident!
•Never drive with damaged tyres - risk of accident!
Note
Please observe the various differing legal requirements regarding tyres.
Tyre life
The life of your tyres very much depends on the following points:
Tyre pressure
The working life of tyres will be shortened considerably if the tyres are insufficiently or over-inflated and this will have an adverse effect on the handling of your vehicle.
Correctly inflated tyres are of partic ular importance when travelling at high speeds. It is therefore good to check the pressure at least once a month and also before
Fig. 164 An opened fuel filler flap with the tyre inflation pressure table
NKO A05R 20 MR08.book Page 187 Wednesday, March 28, 2007 9:42 AM

Breakdown assistance198
– Fit on the spare wheel and tighten the wheel bolts slightly.
–Lower the car.
– Tighten the wheel bolts firmly, alternately and diagonally using the
wheel wrench ⇒page 200.
– Mount the full wheel trim/wheel trim cap or the caps.
Note
•All bolts must be clean and must turn easily.
•You must never grease or oil the wheel bolts!
•When fitting on unidirectional tyres, ensu re that the tyres rotate in the correct direction ⇒page 187.
Subsequent steps
After changing the wheel, you must perform the following steps.
– Stow and attach the replaced wheel in the spare wheel well.
– Stow the vehicle tool kit in the space provided.
– Check the tyre pressure on the spare wheel just mounted as soon as
possible.
– Have the tightening torque of the wheel bolts checked with a torque
wrench as soon as possible. The ti ghtening torque for steel and light
alloy wheels must be 120 Nm.
– Have the defective tyre repaired as soon as possible.
WARNING
It is necessary to observe the guidelines given on ⇒page 189, “New tyres and wheels” if the vehicle is subseq uently fitted with tyres which are different to those it was fitted with at the works.
Note
•If you find, when changing the wheel, that the wheel bolts are corroded and difficult to turn, the bolts must be replac ed before checking the tightening torque.
•Drive cautiously and only at a moderate speed to a workshop where the tight- ening torque can be checked.
Full wheel trim*
Pulling off
– Hook the clamp found in the vehicle tool kit into the reinforced edge
of the full wheel trim.
– Push the wheel key through the clamp, support the wheel key on the
tyre and pull off the wheel trim ⇒fig. 169.
Installing
– First press the full wheel trim onto the wheel at the valve opening
provided. Then press the full wheel trim into the wheel in such a way
that its entire circumference locks correctly in place.
Fig. 169 Removing the full wheel trim
NKO A05R 20 MR08.book Page 198 Wednesday, March 28, 2007 9:42 AM