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Home >> BMW >> 2003 >> X5 46i >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting Systems - Overview - E38, E39 & E53 >> Lighting Systems >> Headlight Beam Throw Control (LWR) >> LWR Components >> Level Sensors

Level Sensors

LWR monitors two hall effect level sensors to determine vehicle load angle. The sensors are mounted to a fixed point on the suspension carriers of the front and rear axles.

A lever is connected to the moving suspension member which changes the sensors output linear voltage signal as the suspension moves up and down.

Fig 1: Identifying Level Sensors
G03398664Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: E39 sport wagon vehicles with EHC have a dual output sensor at the right rear location. This sensor shares the same housing as the EHC systems right rear level sensor.