ABS light
ABS/traction lights can be sensors, rings, wiring, or low voltage. Diagnose before replacing parts.
MED RISK
Common symptoms
- ABS light on
- Traction control disabled
- Speedometer issues sometimes
- Brake feel may change on hard stops
Cost expectations
DIY: £0–£80. Garage: £80–£250+.
Note: prices vary by car and region. Use this as a planning range.
Most likely causes (ranked)
- Wheel speed sensor — Most common; dirt or failure.
- Reluctor ring — Cracked or rusty ring gives bad signal.
- Wiring/connector — Corrosion at sensor plug.
- Low battery voltage — Triggers multiple warning lights.
- ABS module fault — Less common; expensive.
Quick checks (fast, low-cost)
- Scan ABS codes if your tool supports it.
- Inspect sensor area for debris and damaged wiring.
- Check battery voltage and charging system.
- Look for cracked reluctor ring and rust buildup.
- After fixing, clear codes and road test.
Recommended tools
These tools make diagnosis faster and stop you buying random parts.
Related fixes
If your symptoms don’t match perfectly, check these next.
What to do next
- Brakes still work but ABS/traction may not.
- Start with voltage and sensor inspection.
- Module faults are last to consider.
AutoSolveHub helps you narrow possibilities. Always confirm critical repairs with proper testing and safe procedures.