See also:

Problems with the seat ventilation
The seat ventilation has switched off prematurely or cannot be switched on. The vehicle's electrical system voltage is too low because too many electrical consumers are switched on. - Switch ...

Problems with the occupant classification system
Problem The indicator lamp illuminates and remains illuminated. The person on the front-passenger seat: has the weight of a typical adult has been determined by the system not to be a child. ...

Activating/deactivating
WARNING Any accumulation of snow and ice should be removed from the rear window before driving. Visibility could otherwise be impaired, endangering you and others. The rear window defroster ...