See also:

Controls on the interior rearview mirror
Controls on the interior rearview mirror ▷ LED, arrow 1. ▷ Buttons, arrow 2. ▷ The hand-held transmitter, arrow 3, is required for programming. ...

Activating HDC
Press the button; the LED above the button lights up. ...

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