See also:

Fuses
Never attempt to repair a blown fuse and do not replace a defective fuse with a substitute of another color or amperage rating; otherwise, this could lead to a circuit overload, ultimately result ...

General information
If you are no longer able to move the roller sunblind for the rear window after having activated it a number of times in a row, the system is blocked for a limited time to prevent overheating. ...

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...