ABS Light On? Renault Sandero III Wheel Speed Sensor Checks

What a continuous ABS light means

On your Renault Sandero III, an ABS lamp that stays on after the self-test tells you the ABS control module has disabled the system because it has stored a fault. Normal braking should still work, but you won’t have anti-lock braking or, depending on the model, stability control. The most common culprit is a wheel speed sensor or its wiring, but the only reliable starting point is a diagnostic scan of the ABS module.

Check these first

• Fault codes and live data: Read ABS codes and compare all four wheel speeds while driving; a sensor dropping out or reading erratically points to that corner.
• Wheel speed sensor and connector: Inspect the sensor at each wheel for dirt, damage, a loose connector or chafed wiring; clean the mounting face and check the harness near the suspension.
• Reluctor ring/tone wheel: Look for rust, cracks, missing teeth or debris on the ring; this is common on older cars and can mimic a sensor fault.
• Wheel bearing and brake work: Excess bearing play or recent brake/suspension work can disturb the sensor gap; also check battery voltage and fuses if codes are vague.

Can you keep driving?

If the ABS light is the only warning, the brakes feel normal and the red brake warning light is off, you can usually drive carefully to a garage for diagnosis. Treat it as a warning: leave extra distance, avoid wet or slippery roads, and don’t rely on ABS in an emergency. Stop driving and get help if the red brake light is also on, the pedal feels soft or pulsating, or you have multiple dashboard warnings.

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