ABS Warning Light Always On - Toyota Corolla 2019
The ABS warning light is constantly illuminated, indicating a fault in the anti-lock braking system. This means ABS functionality is disabled, though standard braking should still work. The issue could range from a faulty wheel speed sensor to a damaged ABS module.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common on Corolla)
Damaged or corroded ABS tone ring / reluctor ring
ABS module failure or internal fault
Related OBD-II Codes
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What You Should Do
Have the ABS system scanned with a professional diagnostic tool to retrieve trouble codes.
Inspect wheel speed sensors and wiring for damage or corrosion.
Check ABS fuse and relay.
If codes point to a specific sensor, replace it.
For module issues, professional repair or replacement may be needed.
Estimated Repair Cost
$150 - $600 depending on cause (sensor replacement ~$150-$300, module repair ~$400-$600)
Typical range: $150 – $600
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.