Ride height sensor

Depending on the optional equipment, a maximum of 2 ride height sensors are connected to the ICM control unit (1 at front axle, 1 at rear axle).

The ride-height sensors are mainly needed for the exterior lights. The ICM control unit also places the signal on the FlexRay for the Vertical Dynamics System (VDM).

The ride height sensor is a non-contact sensor. The ride height sensor proportionally converts distances into an analogue voltage signal using an angle of rotation. The sensor can be rotated by 360°. The measuring range is 70° (depending on the installation location, sawtooth-shaped characteristic curve). The signals are output as analogue electrical voltages.

Fig 1: Identifying Ride Height Sensor And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.