Clean the Wheel Speed Sensor and Tone Ring

1. Raise the vehicle safely using a jack and secure it on jack stands. 2. Remove the wheel to gain access to the wheel speed sensor located at the wheel hub. 3. Use a soft-bristled brush and an electronics-safe aerosol cleaner to remove metallic dust, road debris, and grime from the sensor tip and the surrounding magnetic tone ring. 4. Inspect the area for any physical obstructions or heavy corrosion. 5. Reinstall the wheel, lower the vehicle, and drive at speeds above 15 mph to allow the ABS computer to re-initialize and clear the dashboard lights if the signal is restored.

Sources