
ABS Brake System Troubleshooting Guide
When your ABS warning light comes on or your brakes start behaving unpredictably, it’s easy to assume the worst. But the anti-lock braking system (ABS)


When your ABS warning light comes on or your brakes start behaving unpredictably, it’s easy to assume the worst. But the anti-lock braking system (ABS)

Summary: An illuminated ABS warning light is an automatic MOT failure for any UK vehicle first registered after July 2003. The DVSA classes it as

Summary: When the ABS and traction control lights come on together, it almost always means the car has lost one or more wheel-speed signals or

Summary: The ABS warning light should never be ignored or simply “cleared” without fixing the root cause — doing so only masks a potentially serious

Summary: A single ABS wheel-speed sensor replacement typically costs £130–£350 in the UK once you add diagnostics and labour — but in a huge percentage

Modern vehicles rely more than ever on electronics. From your engine control unit (ECU) and transmission module to ABS, steering, and airbag systems — these