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ABS light on
Medium — fix within days
The ABS warning light on the dashboard stays on. Your normal brakes still work, but the anti-lock system may not help you in a hard stop.
Possible causes
- Bad wheel speed sensor — Most likely · Codes: C0035C0040
Check first: Look for damaged wiring near the wheels. A wheel speed sensor tells the ABS how fast each wheel turns. - ABS pump or module fault — Possible · Codes: C0110C0265U0121
Check first: Notice if the traction control light is on too. Both lights together point to the ABS module or pump. - Low brake fluid — Less likely
Check first: Check the brake fluid level in the reservoir under the hood. Low fluid can turn the ABS light on.
Questions, answered
What usually causes this?
The most likely causes are: Bad wheel speed sensor; ABS pump or module fault; Low brake fluid. If you are not sure what is wrong, have it checked by a qualified technician.
Is it safe to drive with this symptom?
Drive with caution and book a check within days. Do not ignore it.
Not repair advice. If you are not sure what is wrong, have it checked by a qualified technician. Cars differ by make, model and year.
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