See also:

Closing the windows and glass sunroof/panoramic glass sunroof
Driving with the glass sunroof/panoramic glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

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

Maximum cooling
Press the button. The system is set to the lowest temperature, maximum air volume and recirculated-air mode. Air flows out of the vents for the upper body region. Open them for this purpose. ...