See also:

Tone
The sound settings are stored for the remote control currently in use. ...

Microfilter/activated-charcoal filter
The microfilter traps dust and pollen in the incoming air. The activated-charcoal filter removes gaseous pollutants from the outside air that enters the vehicle. The service center replaces th ...

Opening the main menu
Press the button. The main menu is displayed. All iDrive functions can be called up via the main menu. ...