See also:

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Distance to back of head: manual head restraints
Distance to back of head: manual head restraints ▷ Forward: by pulling ▷ Back: press the button and push the head restraint toward the rear. ...

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. ...