Lynk & Co 09 ABS Light On? Wheel Speed Sensor Troubleshooting Guide

Why the ABS Light Stays On

When the ABS light stays on continuously in your Lynk & Co 09, the system has detected a fault and disabled itself. In most cases, the culprit is a faulty wheel speed sensor or a problem with its wiring — not a catastrophic brake failure. Each wheel has a sensor that reads how fast that wheel is turning. If one signal is missing or erratic, the ABS module turns on the warning light and stops the system from engaging. That doesn't mean your normal brakes won't work, but you lose the anti-lock assist.

Which Parts to Check First

Start with the wheel speed sensors — these are small, usually replaceable components mounted at each hub. On most Lynk & Co 09 models, a sensor is a separate part from the bearing or hub assembly, so you can often replace just the sensor. Before buying anything, though, it's worth checking the wiring and connector at that wheel. A damaged wire, corrosion in the plug, or a loose connector can mimic a dead sensor. If you have an OBD-II scanner that reads ABS codes, it will often tell you which corner is affected, for example "left rear wheel speed sensor circuit." That's your best starting point.

Is It Safe to Keep Driving?

You can usually still drive, but be careful — especially on wet or slippery roads. Without ABS, your wheels can lock up under hard braking, so you'll need to pump the brakes manually or leave more stopping distance. If the ABS light is the only warning and your regular brake warning light is off, your service brakes are likely fine. Still, I'd get it diagnosed soon. A bad sensor on one wheel can also confuse stability control and traction control, which rely on the same data. Also note: a metal particle buildup on the sensor tip is a common cause and can be cleaned, but if the sensor is damaged internally, replacing just that sensor is usually sufficient. Confirm the exact part and procedure for your specific Lynk & Co 09 model year before starting work.

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