221
Checking and refilling levels
For the sake of the environment
Just one full tank of leaded fuel would seriously impair the efficiency of the
catalytic converter.
Petrol additives
Petrol additives improve the quality of the petrol.
The quality of the petrol influences the performance, power and life of the
engine. For this reason, you should use good quality petrol containing addi-
tives. These additives will help to prevent corrosion, keep the fuel system
clean and prevent deposits from building up in the engine.
If good quality petrol with additives is not available or engine problems oc-
cur, the required additives must be added during refuelling.
Diesel Diesel*
Diesel fuel must conform to DIN EN 590 (EN = “European Standard”). It
must have a cetane number (CN) of at least 51. The cetane number indi-
cates the ignition quality of the diesel fuel.
Notes on refuelling ⇒ page 219. Biodiesel*
CAUTION
● Your vehicle is not designed to use biodiesel fuel. Never, under any cir-
cumstances refuel with biodiesel. The use of biodiesel fuel could damage
the engine and the fuel system. The addition of biodiesel to diesel fuel by
the diesel manufacturer in accordance with standard EN 590 or DIN 51628
is authorised and will not cause damage to the engine or the fuel system.
● The diesel engine has been designed to be used exclusively with diesel
fuel conforming to standard EN 590. Never refuel or use petrol, kerosene,
fuel oil or any other type of fuel. If you accidentally fill up the vehicle with
the wrong type of fuel, do not start the engine. Seek assistance from speci-
alised personnel. The composition of these fuels may severely damage the
fuel system and the engine.
Winter driving
Diesel can thicken in winter.
Winter-grade diesel
When using “summer-grade diesel fuel”, difficulties may be experienced at
temperatures below 0 °C because the fuel thickens due to wax separation.
Therefore, “winter-grade diesel fuel” is available in some countries during
the cold months. It can be used at temperatures as low as -22 °C.
In countries with different climatic conditions the diesel fuel generally sold
has different temperature characteristics. Check with the Technical Services
or filling stations in the country concerned regarding the type of diesel fuels
available.
Filter pre-heater
Your vehicle is fitted with a fuel filter glow plug system, making it well
equipped for operation in winter. This ensures that the fuel system remains
Safety FirstOperating InstructionsPractical TipsTechnical Specifications
227
Checking and refilling levels
– Briefly run the engine at idle speed until the operating tempera-
ture is reached and then stop.
– Wait two minutes.
– Pull out the dipstick. Wipe the dipstick with a clean cloth and
insert it again, pushing it in as far as it will go.
– Then pull it out once more and check the oil level ⇒ Fig. 158.
Top up with engine oil if necessary.
Oil level in area A
Do not add oil
⇒ .
Oil level in area B
You can add oil, but keep the level in this zone.
Oil level in area C
Oil
must be added. Afterwards, the oil level should be in the lined area
B.
Depending on how you drive and the conditions in which the vehicle is
used, oil consumption can be up to 0.5 l/1000 km. Oil consumption is likely
to be higher for the first 5000 km (3000 miles). For this reason the engine
oil level must be checked at regular intervals, preferably when filling the
tank and before a journey.
WARNING
Any work carried out in the engine compartment or on the engine must
be carried out cautiously.
● When working in the engine compartment, always observe the safety
warnings ⇒ page 222.
–
–
–
CAUTION
If the oil level is above the area A do not start the engine. This could result
in damage to the engine and catalytic converter. Contact a Technical Serv-
ice.
Topping up engine oil
Top up gradually with small quantities of engine oil.
Fig. 159 In the engine
compartment: Engine oil
filler cap
Before opening the bonnet, read and observe the warnings ⇒
in
Safety instructions on working in the engine compartment on
page 222.
– Unscrew cap from engine oil filler opening ⇒
Fig. 159.
– Top-up oil in small amounts, using the correct oil.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications
228Checking and refilling levels
–To avoid over-filling with engine oil, you should top-up using
small quantities, wait a while and check the oil level before
adding any more oil.
– As soon as the oil level is in area B
, carefully close the cap.
The position of the oil filler opening is shown in the corresponding engine
compartment illustration ⇒ page 281.
Engine oil specification ⇒ page 225.
WARNING
Oil is highly inflammable! Ensure that no oil comes into contact with hot
engine components when topping up.
CAUTION
If the oil level is above the area A do not start the engine. This could result
in damage to the engine and catalytic converter. Contact a specialised work-
shop.
For the sake of the environment
The oil level must never be above area A. Otherwise oil can be drawn in
through the crankcase breather and escape into the atmosphere via the ex-
haust system.
Changing engine oil
The engine oil must be changed at the intervals given in the
service schedule. We recommend that you have the engine oil changed by a Technical Serv-
ice. The oil change intervals are shown in the Maintenance Programme.
WARNING
Only change the engine oil yourself if you have the specialist knowledge
required!
● Before opening the bonnet, read and observe the warnings
⇒ page 222, Safety instructions on working in the engine compartment.
● Wait for the engine to cool down. Hot oil may cause burn injuries.
● Wear eye protection to avoid injuries, such as acid burns, caused by
splashes of oil.
● When removing the oil drain plug with your fingers, keep your arm
horizontal to help prevent oil from running down your arm.
● Wash your skin thoroughly if it comes into contact with engine oil.
● Engine oil is poisonous! Used oil must be stored in a safe place out of
the reach of children.
CAUTION
No additives should be used with engine oil. This could result in engine
damage. Any damage caused by the use of such additives would not be
covered by the factory warranty.
For the sake of the environment
● Because of the disposal problems, the necessary special tools and spe-
cialist knowledge required, we recommend that you have the engine oil and
filter changed by a Technical Service.
● Never pour oil down drains or into the ground.
● Use a suitable container when draining the used oil. It must be large
enough to hold all the engine oil.
274If and when
Towing and tow-starting
Tow-starting
The use of jump leads is preferable to tow-starting.
We recommend that you do not tow-start your vehicle. Jump-start-
ing is preferable ⇒ page 271.
However, if your vehicle has to be tow-started:
– Engage the 2nd or the 3rd gear.
– Keep the clutch pressed down.
– Switch the ignition on.
– Once both vehicles are moving, release the clutch.
– As soon as the engine starts, press the clutch and move the
gear lever into neutral. This helps to prevent driving into the
towing vehicle.
WARNING
The risk of accidents is high when tow-starting. The vehicle being towed
can easily collide with the towing vehicle.
CAUTION
When tow-starting, fuel could enter the catalytic converter and damage it. General notes
Please observe the following points if you use a tow rope:
Notes for the driver of the towing vehicle
–
Drive slowly at first until the tow rope is taut. Then accelerate
gradually.
– Begin and change gears cautiously. If you are driving an auto-
matic vehicle, accelerate gently.
– Remember that the brake servo and power steering are not
working in the vehicle you are towing. Brake sooner than nor-
mal and pressing the pedal gently.
Notes for the driver of the towed vehicle
– Ensure that the tow rope remains taut at all times when towing.
Tow rope or tow bar
It is easier and safer to tow a vehicle with a tow bar. You should only use a
tow rope if you do not have a tow bar.
A tow rope should be slightly elastic to reduce the loading on both vehicles.
It is advisable to use a tow rope made of synthetic fibre or similarly elastic
material.
Attach the tow rope or the tow bar only to the towline anchorages provided
or a towing bracket.
Driving style
Towing requires some experience, especially when using a tow rope. Both
drivers should be familiar with the technique required for towing. Inexper-
ienced drivers should not attempt to tow.
C
Car care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 196
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
CD changer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Central lock button Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Automatic locking system for involuntaryunlocking . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Automatic speed dependent locking and unlocking system* . . . . . . . . . . . . . . . . . . 97
Emergency unlocking system . . . . . . . . . . . 97
Selective unlocking system* . . . . . . . . . . . . 96
Unlocking system* . . . . . . . . . . . . . . . . . . . . 97
Centre armrest . . . . . . . . . . . . . . . . . . . . . . . . . 138
Cetane number . . . . . . . . . . . . . . . . . . . . . . . . . 221
Changing gear see Manual gearbox . . . . . . . . . . . . . . . . . . 174
Changing gear in tiptronic mode . . . . . . . . . . 178
Changing the bulbs Main headlight bulbs . . . . . . . . . . . . . . . . . 263
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Changing the main headlight bulbs Main beam lights . . . . . . . . . . . . . . . . . . . . 265
Side lights . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Turn signal bulbs . . . . . . . . . . . . . . . . . . . . 264
Changing the main headlight lamps dipped lights . . . . . . . . . . . . . . . . . . . . . . . 264 Changing the tail light bulbs
Position light, fog light and tail light on therear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Changing the tail lights Luggage compartment lights . . . . . . . . . . 269
Turn signal, side and brake lights on thebody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Changing windscreen wiper blades . . . . . . . . 232
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 278
Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Checking battery electrolyte level . . . . . . . . . . 237
Checking engine oil level . . . . . . . . . . . . . . . . . 226
Checklist Seat upholstery . . . . . . . . . . . . . . . . . . . . . 212
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Child seat Categorisation in groups . . . . . . . . . . . . . . . 48
Group 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Group 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Group 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Groups 0 and 0+ . . . . . . . . . . . . . . . . . . . . . . 48
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 46
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . 52
on the front passenger seat . . . . . . . . . . . . . 31
Top Tether system . . . . . . . . . . . . . . . . . . . . 52
Cigarette lighter* . . . . . . . . . . . . . . . . . . . . . . . 147
Cleaning alloy wheel rims . . . . . . . . . . . . . . . . 210
Cleaning chrome . . . . . . . . . . . . . . . . . . . . . . . 209
Cleaning engine compartment . . . . . . . . . . . . 211
Cleaning steel wheel rims . . . . . . . . . . . . . . . . 210 Cleaning windows . . . . . . . . . . . . . . . . . . . . . . 208
Climatic* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Climatronic
General notes . . . . . . . . . . . . . . . . . . . . . . . 164
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Clothes hook . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Compartment for on-board documentation . . 138
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Control lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Controls electric windows . . . . . . . . . . . . . . . . . . . . . 108
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . 129
Sliding/tilting sunroof . . . . . . . . . . . . . . . . 110
Convenience closing Sliding/tilting sunroof . . . . . . . . . . . . . . . . 111
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Convenience opening Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . 229, 230 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 65
Coolant level . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 80
Coolant loss . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Coolant temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Safety instructions . . . . . . . . . . . . . . . . . . . . 80
Correct adjustment of front seat head re- straints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Correct adjustment of rear seat head restraints In-use and non-use positions . . . . . . . . . . . 14
290 Index