See also:

Tire inflation pressure values over 100 mph/160 km/h
320i   328i 335i ...

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

Adjusting the volume
Adjusting the volume Turn the knob until the desired volume is selected. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the mic ...