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.
See also:
Contacts
...
Opening the main menu
Press the button.
The main menu is displayed.
All iDrive functions can be called up via the main
menu. ...
Tachometer
Always avoid engine speeds in the red warning
field. In this range, the fuel supply is interrupted
to protect the engine. ...