See also:

Switching the system on/off
Switching off At the lowest fan speed, press the left side of the button on the driver's side. Switching on Press any button. ...

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

Rear
BMW X5 BMW X5 Unlock the center armrest with the button in the lower section of the opening and fold down. Unlock the center armrest Press the button; the cover folds forward. With 3rd row ...