ABS Warning Light On - BMW 3 Series 2019
The ABS warning light is constantly illuminated on your 2019 BMW 3 Series, indicating a fault in the anti-lock braking system. This may affect braking performance and safety, especially in slippery conditions.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common on BMW 3 Series)
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 vehicle's ABS system scanned with a professional diagnostic tool to retrieve fault codes.
Inspect all four wheel speed sensors and tone rings for damage, debris, or corrosion.
Check wiring and connectors for breaks or moisture.
If a sensor is faulty, replace it.
If the ABS module is defective, it may need repair or replacement.
Do not ignore the warning light as it may disable stability control and ABS functions.
Related Repairs
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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.
