ABS Warning Light

Common causes are a dirty or faulty wheel speed sensor, a damaged tone ring or wiring. The stability and traction control lights often come on with it. Low battery voltage can also trigger it briefly. A scan tool can read the stored ABS code, which usually points to the wheel concerned.

The ABS module checks its sensors and valves; if it finds a fault, it disables ABS and lights the symbol.

Brake more gently, especially on slippery roads, until it is repaired. If the ABS light comes on together with the red brake warning light, have the car checked before driving.