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E46 Driver Information

LWR COMPONENTS

CONTROL ELECTRONICS

LSZ - E46

The E46 LWR function is integrated into the control electronics of the LSZ. The LSZ mon-

itors the required input signals to provide the LWR function and directly activates the step-

per motors in the headlight assemblies. All LWR diagnosis is accessed through the LSZ

control module.

LEVEL SENSORS

LWR monitors two hall effect level sensors to

determine vehicle load angle. The sensors

are mounted to a fixed point on the suspen-

sion carriers of the front and rear axles.

A lever is connected to the moving suspen-

sion member which changes the sensors out-

put linear voltage signal as the suspension

moves up and down.

HEADLIGHT ADJUSTMENT STEPPER MOTORS

One stepper motor is located inside each

headlight assembly.

The 4 wire stepper motors are controlled

by the LWR control electronics to change

the vertical headlight position.

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BMW ONBOARD COMPUTER Bedienungsanleitung Seite 35