See also:

Status field
The following information is displayed in the status field at the top right: Time. Current entertainment source. Sound output, on/off. Wireless network reception strength. Telephone stat ...

Volume
▷ "Speed volume": speed-dependent volume control. ▷ "PDC": volume of the PDC signal compared to the entertainment sound output. ▷ "Gong": volume o ...

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. ...