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Ask all vehicle occupants to leave the vehicle and stand at a safe distance away from moving
traffic.
Chock the wheel diagonally opposite the wheel being worked on with a stone, collapsible
chocks or another suitable object.
When towing a trailer: unhitch the trailer from the vehicle and park it properly .
Remove any items of luggage from the luggage compartment.
Remove the spare wheel or temporary spare wheel and the vehicle tool kit from the
luggage compartment.
Remove the hubcaps Hubcaps.
WARNING
Ignoring any of the items on this important safety checklist can lead to accidents and
severe injuries.
• Always follow the instructions in the checklist and observe the general safety
procedures.
Wheel bolts
Fig. 244 Changing a wheel: loosening the wheel bolts.
Fig. 245 Changing a wheel: tyre valve ① and locations of the anti-theft wheel bolt ② or ③.
First read and observe the introductoryinformation and safety warnings
Introduction
Use a suitable box spanner to loosen the wheel bolts.
Only loosen the wheel bolts by approximately one turn before raising the vehicle with the vehicle
jack.
If the wheel bolt is very tight, you may be able to loosen it by pushing down the end of the spanner
carefully with your foot. Hold on to the car for support and take care not to slip.
Loosening the wheel bolts
• Fit the box spanner over the wheel bolt as far as it will go
• Hold the end of the box spanner and turn the wheel bolt one turn anticlockwise
Loosening the anti-theft wheel bolt
• Take the adapter for the anti-theft wheel bolt out of the vehicle tool kit.
• Insert the adapter into the anti-theft wheel bolt as far as it will go.
• Push the box spanner onto the adapter as far as it will go.
• Hold the end of the box spanner and turn the wheel bolt one turn anticlockwise
Tightening torque for the wheel bolts
Specified tightening torque for wheel bolts for steel or alloy wheels:
• 140 Nm
If the wheel bolts are corroded and difficult to turn, they must be replaced and the wheel hub
threads cleaned before the tightening torque is checked.
Never grease or lubricate the wheel bolts or the threads of the wheel hub.
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Fig. 244
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