Geely Tugella ABS Light On? How to Diagnose a Faulty Wheel Speed Sensor

Why Is the ABS Light Staying On?

When the ABS warning light on your Geely Tugella stays on continuously, the system has detected a fault and disabled itself. In most cases, the culprit is a wheel speed sensor—a small magnetic pickup mounted at each wheel that monitors how fast that wheel is turning. If the ABS module sees an inconsistent, missing, or erratic signal from any sensor, it logs a trouble code and turns on the warning light. Before you panic, know this: your normal brakes will still work, but you'll lose anti-lock assistance in a hard stop.

What to Check First

Start with the simplest things before replacing parts. Use an OBD-II scanner to read the ABS codes—this will often tell you exactly which wheel is the problem (e.g., C0031 or C0035 refers to a front or rear sensor circuit). Then inspect that specific wheel:

• Sensor connector and wiring: Look for corrosion, broken wires, or a loose plug near the wheel well.
• Sensor tip and tone ring: The sensor sits close to a toothed ring on the axle or hub. Clean off any metal shavings, mud, or grease that could block the signal.
• Air gap: If the sensor is pushed too far away from the tone ring, it won't produce a reliable signal.
• Tire condition and size: A badly worn or incorrectly sized tire on one axle can make wheel speeds differ, setting off the light.

Common Causes on the Geely Tugella

On the Tugella, I often see three things: a chafed wiring harness near the rear suspension (where debris hits it), a rusted or damaged tone ring on the front hubs, and a sensor that's simply packed with brake dust after years of service. Occasionally the ABS module itself fails, but that's much rarer—always verify the sensor and wiring first.

Is It Safe to Keep Driving?

You can drive to a workshop, but drive with extra caution. In an emergency, your wheels may lock up and you could skid, especially on wet or loose surfaces. Your Tugella's stability control (ESC) will also be disabled, since it relies on the same wheel speed data. Keep a safe following distance, avoid hard braking, and get it diagnosed as soon as possible. A faulty sensor won't ruin the car, but it will cost you more if you ignore it until it damages the tone ring or wiring further.

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