See also:

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

Opening/closing the glass sunroof
When the sliding visor is open, proceed as described under Sliding visor. ...

Functional readiness of the airbag system
When the ignition is switch on, the warning lamp in the instrument cluster lights up briefly and thereby indicates the operational readiness of the entire airbag system and the belt tensione ...