A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Wheel Speed Sensor: Testing and Inspection
Rear
ABS wheel speed sensor rotor, checking
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Raise vehicle.
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Remove wheel.
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Pull ABS wheel speed sensor out of wheel bearing housing.
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Check rotor for dirt and damage.
Note: If ABS wheel speed sensor rotor is damaged or dirty, remove stub axle or drive axle. If damaged, replace outer constant velocity joint
together with ABS wheel speed sensor rotor.
