WARNING■If you are in flowing traffic, switch on the hazard warning light system
and set up the warning triangle at the prescribed distance! The national le-
gal requirements must be observed.■
Park the vehicle as far away as possible from the flow of traffic. Park on
as flat and firm a surface as possible.
■
The following instructions must be followed if the vehicle is subsequently
fitted with tyres or rims that differ from the factory fitted ones » page 201,
Explanation of the tyre labelling .
WARNINGInformation on the wheel bolts■The wheel bolts must be clean and must turn easily. Never treat them
with grease or oil.■
The prescribed tightening torque of the wheel bolts for steel and light al-
loy wheels is 120 Nm.
■
If the wheel bolts are tightened to a too low tightening torque, the rim
can come loose when the car is moving. A tightening torque which is too
high can damage the bolts and threads and this can result in permanent
deformation of the contact surfaces on the rim.
■
In case of incorrect treatment of the wheel bolts, the wheel can loosen
when the car is moving.
Note
The national legal requirements must be observed when changing a wheel.
Preliminary work
Read and observe
on page 206 first.
Before changing the wheel, the following work must be carried out.
›
Have all the occupants get out. The passengers should not stand on the
road (instead they should remain behind a crash barrier, for instance) while
the wheel is being changed.
›
Switch off the engine.
›
Select the 1st gear or place the selector lever of the automatic transmission
in the P-position .
›
Apply the handbrake firmly.
›
Uncouple a trailer.
›Remove the
vehicle tool kit » page 205 and the spare wheel » page 200 from
the boot.
Changing a wheel
Read and observe
on page 206 first.
When changing a wheel, the following instructions must be followed.
›
Remove the full wheel trim or the caps of the wheel bolts.
›
First of all slacken the anti-theft wheel bolt and then the other wheel bolts.
›
Jack up the vehicle until the wheel that needs changing is clear of the
ground.
›
Unscrew the wheel bolts and place them on a clean surface (cloth, paper, etc.).
›
Remove the wheel carefully.
›
Attach the spare wheel and slightly screw on the wheel bolts.
›
Lower the vehicle.
›
Tighten the opposite wheel bolts alternately (cross-wise) with the wheelwrench. Tighten the anti-theft wheel bolt last.
›
Replace the wheel trim or the caps.
When fitting unidirectional tyres, ensure that the indication is cor-
rect » page 197 .
WARNINGIf it is established when changing a wheel that the wheel bolts are corro-
ded and difficult to move, then these must be replaced.
Follow-up work
Read and observe
on page 206 first.
After changing the wheel, the following work must be carried out.
›
Stow and attach the replaced wheel in the spare wheel well using a special
bolt » page 200 .
›
Stow the tool kit in the space provided and secure using the strap.
›
Check the tyre pressure on the installed spare wheel as soon as possible.
›
Have the tightening torque of the wheel bolts checked with a torque
wrench as soon as possible.
206Do-it-yourself
After changing the wheel, the tyre pressure should be adjusted. In vehicles
with tyre pressure monitoring, tyre pressure values are to be stor-
ed » page 166 .
Replace the damaged wheel or consult a specialist garage about repair op-
tions.WARNINGDrive cautiously and only at a moderate speed until the tightening torque
has been checked.
Loosening/tightening wheel bolts
Fig. 179
Changing a wheel: Loosening the
wheel bolts
Read and observe on page 206 first.
Before removing the wheel bolts, the caps for the wheel bolts must be pulled off.
Releasing
›
Push the wheel wrench onto the wheel bolt as far as the stop 1)
.
›
Grip the wrench at its end and turn the bolt about one turn in the direction of
the arrow » Fig. 179.
Tightening
›
Push the wheel wrench onto the wheel bolt as far as the stop 1)
.
›
Grip the wrench at its end and turn the bolt against the direction of the ar-
row » Fig. 179 until it is tight.
After tightening the wheel bolts, the covering caps must be replaced.
WARNING■ Undo the wheel bolts only a little (about one turn) provided that the vehi-
cle has not yet been jacked up. Otherwise the wheel could become loose
and fall off.■
If it proves difficult to undo the bolts, carefully apply pressure to the end
of the wrench with your foot. Keep hold of the vehicle when doing so, and
make sure you keep your footing.
Raising the vehicle
Fig. 180
Jacking points for positioning
lifting jack
Fig. 181
Attach lifting jack
Read and observe
on page 206 first.
In order to raise the vehicle, the jack from the tool kit is to be used.
Position the car jack at the jacking point closest to the flat tyre .
1)
Use the appropriate adapter for undoing and tightening the anti-theft wheel bolts
» page 208.
207Emergency equipment and self-help
