How a car works

All partsBMW M4 CSLWheel assembliesFront left wheel › ABS sensor

ABS sensor

Part of Front left wheel · about $85 to replace

What it is

Active wheel-speed sensor on the hub.

What it does

Feeds wheel speed to ABS, DSC and the speedometer.

How it fails

Debris on the encoder gives intermittent ABS faults.

MaterialHall IC, magnetic encoder in the bearing seal
Spec48 pulses/rev
ABS sensor highlighted on the car

Appears at

Front left wheelFront right wheelRear left wheelRear right wheel

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