ABS Warning Light Always On
The ABS warning light is continuously illuminated on a 2020 Toyota RAV4, indicating a fault in the anti-lock braking system. This may affect braking safety, especially in slippery conditions, and should be diagnosed promptly.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common cause on RAV4 models)
Damaged or corroded ABS tone ring
ABS module or pump failure
Related OBD-II Codes
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What You Should Do
Use an OBD-II scanner with ABS capability to retrieve trouble codes.
Inspect all four wheel speed sensors and their wiring for damage or debris.
Check tone rings for cracks or corrosion.
If no obvious issues, have the ABS module tested by a professional.
Estimated Repair Cost
$150–$600 depending on sensor replacement vs. module repair
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.