Why Your VW Passat B8 ABS Light Won't Turn Off – And What to Check First

Understanding the ABS Warning Light on Your Passat B8

When the ABS light stays on continuously in your Volkswagen Passat B8, it means the system has detected a fault and has disabled itself for safety. In most cases, the culprit is a failing wheel speed sensor. These sensors send wheel rotation data to the ABS control module; if one sensor gives an erratic or missing signal, the system deactivates and lights up the warning.

Which Sensor to Check First

Start with the front left wheel speed sensor – it's the most common failure point on the B8. Here’s a quick checklist:

• Inspect the sensor wiring for cuts, corrosion, or fraying near the wheel well.
• Look at the sensor tip through the hub opening – if it's covered in metal shavings or debris, clean it gently.
• Use a multimeter to check the sensor’s resistance (typically 1–2 kΩ). A reading of 0 Ω or infinite means the sensor is dead.

Is It Safe to Drive?

Yes, you can still drive, but with important caveats. Your normal brakes will work, but ABS, traction control, and stability control will be off. Avoid slippery roads and hard stops. Drive gently to a repair shop. Replacing a wheel speed sensor on a Passat B8 is a straightforward job that usually costs between $150 and $300 including labor.

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