Position detection
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
A motor is integrated in each of the spindle drives. Two hall effect sensors are fitted in the motor, deviation in against one another. This enables the direction of rotation of the motor to be detected. Furthermore, the distance and thus the opening angle of the tailgate can be detected on the basis of the hall effect sensor impulses. The hall effect sensor impulses are used, for example, to adjust the opening angle via the Central Information Display.