246
Breakdown assistance
WARNING (continued)
•
Never start the engine with the vehicle sitting on the raised jack - danger
of suffering injury!
Caution
If you have to change a wheel on a slope first block the opposite wheel with a stone
or similar object in order to secure the vehicle from unexpectedly rolling away.
Note
Comply with the national legal regulations.
Changing a wheel
Always change a wheel on a level surface as far as possible.
– Take off the full wheel trim* ⇒ page 247 or the caps ⇒ page 247.
– In the case of light alloy wheels remove the wheel trim cap
⇒ page 248.
– First of all slacken the safety wheel bolt * and afterwards the other
wheel bolts ⇒ page 248.
– Jack up the vehicle until the wheel to be changed is clear of the ground
⇒ page 249.
– Unscrew the wheel bolts and place them on a clean surface (cloth,
paper etc.).
– Take off the wheel.
– 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 (crosswise) and last the safety wheel bolt* ⇒ page 248.
– 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, ensure that the tyres rotate in the correct
direction ⇒ page 235.
Subsequent steps
After changing the wheel, you must perform the following steps.
– Stow and attach the replaced wheel in the spare wheel well using a
⇒ page 245, fig.
special screw
– 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. Steel and light alloy wheels must be tight-
ened to a tightening torque of 120 Nm.
– Have the defective tyre repaired as soon as possible.
WARNING
It is necessary to observe the guidelines given on ⇒ page 237 if the vehicle is
subsequently fitted with tyres which are different to those it was fitted with
at the works.
216.