ABS Warning Light Always On - Toyota Tacoma 2020
The ABS warning light is constantly illuminated, indicating a fault in the anti-lock braking system. This means ABS functionality is disabled, but normal braking should still work. Diagnosis is needed to prevent potential safety issues.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common on Tacoma)
Damaged or corroded ABS tone ring / reluctor ring
ABS module failure or wiring issue
Related OBD-II Codes
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What You Should Do
Use an OBD-II scanner with ABS capability to read the trouble codes.
Inspect all four wheel speed sensors for damage, dirt, or loose connections.
Check the tone rings for cracks or missing teeth.
If no obvious issue, test the ABS module and wiring with a multimeter.
Clear codes and test drive to see if light returns.
Estimated Repair Cost
$100 - $600 depending on cause (sensor replacement ~$150-$300, module repair ~$400-$600)
Typical range: $100 – $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.