ABS Light Stays On: Changan Uni-T Wheel Speed Sensor Guide

What a steady ABS light means

On a Changan Uni-T, an ABS warning light that stays on after the self-check usually means the ABS control module has logged a fault and disabled ABS. The most common culprit is a wheel speed sensor or its wiring, but the module needs a clean signal from all four wheels. A dirty sensor tip, corroded connector, damaged harness, cracked reluctor ring, or worn wheel bearing can all interrupt that signal. Less often, the ABS pump/module or low battery voltage is involved.

Check these first

• Scan ABS codes: use a scanner that reads chassis/ABS faults, not just engine codes. Note which wheel is affected.
• Live wheel speed data: compare all four speeds while driving slowly; a dropout or erratic reading points to that corner.
• Sensor and connector: inspect the sensor tip, mounting bolt, and plug at each wheel for dirt, corrosion, or damage.
• Wiring and reluctor ring: look for chafed harnesses and cracked or rusty tone rings; check bearing play.

Is it safe to drive?

If only the amber ABS light is on and the brakes feel normal, you can usually drive cautiously to a workshop, but remember ABS may not assist in a panic stop. Do not ignore a red brake warning light, a soft or long pedal, pulling, grinding, or intermittent ABS activation; stop safely and get it checked. Fixing the fault restores ABS and may also restore stability control, so scan and repair it promptly rather than simply clearing the light.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.