See also:

Interior rearview mirror, automatic dimming feature
Photocells are used for control: In the mirror glass. On the back of the mirror. For proper operation: Keep the photocells clean. Do not cover the area between the inside rearview ...

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

Configuring the prewarning
After the warning function is switched on, the following can be set via the iDrive: The prewarning can be switched on/off. The time of the prewarning can be set. These settings have no effe ...