See also:

Activation/deactivation
Press the button. ...

Ignition on
Automatic transmission: press the Start/Stop button, and do not press on the brake pedal at the same time. Manual-shift transmission: press the Start/Stop button, and do not press on the clutch ...

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