Cybertruck ABS Light Stuck On? Most Likely a Wheel Speed Sensor Fault

Why the ABS Light Stays On

If the ABS warning light on your Cybertruck is on continuously, the system has detected a fault in one of its wheel speed monitoring circuits. On most Cybertrucks, each wheel has its own speed sensor that sends rotation data to the vehicle's stability and ABS controller. When one sensor stops sending a signal, or sends an erratic one, the ABS light comes on and stays on until the fault is corrected.

What to Check First

In my experience, the most common cause is a damaged or contaminated wheel speed sensor, but the wiring and connector at each wheel are just as likely culprits. Start with a full diagnostic scan to see which corner of the truck is reporting the fault. Then inspect that wheel's sensor connector and wiring harness for corrosion, cuts, or chafing. The sensor itself is usually a separate part that can be replaced without swapping the entire hub or bearing assembly on most Cybertruck models, though you should confirm the exact part and procedure for your specific year and trim. In some cases, the issue is not the sensor but the metal tone ring or reluctor ring that the sensor reads; a cracked or magnetized ring can cause the same warning.

Is It Safe to Keep Driving?

The ABS warning light means the anti-lock braking system may not work when you need it, but your normal hydraulic brakes should still function in typical dry conditions. That said, the stability control and traction control systems also rely on wheel speed data, so on wet or slippery roads the truck may feel less sure-footed. It is generally safe to drive gently to a service center, but I would avoid aggressive braking and any off-road or low-traction situations until the fault is diagnosed. If the warning light flickers or is accompanied by a brake pedal that feels odd, have the truck towed instead of driven.

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