See also:

Resetting to factory settings
For safety reasons, the Daytime Running Lamps function in the Lighting submenu is only reset when the engine is switched off. ► Press on the steering wheel to select the Settings menu. ...

Problems with the rear window defroster
The rear window defroster has deactivated itself prematurely or cannot be activated. - Switch off any consumers that are not required, e.g. reading lamps or interior lighting. When the battery ...

Safety guidelines for seat belts, Emergency Tensioning Devices (ETDs) and air bags
WARNING - Damaged seat belts or seat belts that have been subjected to stress in an accident must be replaced. Their anchoring points must also be checked. Only use seat belts installed o ...