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Breakdown assistance 277
Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical Data
– Slacken the wheel bolts ⇒ page 279.
– Jack up the vehicle until the wheel to be changed is clear of
the ground ⇒ page 280.
– 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 ⇒ page 279.
– 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 263.
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. Steel and light alloy
wheels must be tightened 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 266, “New
tyres and wheels” if the vehicle is subsequently 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 replaced before checking the tight-
ening torque.
• Drive cautiously and only at a moderate speed to a workshop where
the tightening torque can be checked.
s24s
.
book
Page
277
Thursday
,
November
24
,
2005
12:27
PM
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