You can physically drive, but it's not recommended. A faulty wheel speed sensor can disable or degrade the ABS and traction-control systems, increase braking distances, and reduce stability in slippery conditions; have the car inspected promptly.
What a wheel speed sensor does
The wheel speed sensor measures how fast each wheel is turning. Data from these sensors is used by the anti-lock braking system (ABS), electronic stability control (ESC), and, in some cars, the speedometer and related safety systems. A healthy sensor helps the car determine if a wheel is locking or slipping and applies controlled braking or engine adjustments to maintain control. A failed sensor can trigger warning lights and degrade these safety systems.
What happens when a wheel speed sensor fails
Common symptoms and effects include the following:
- ABS warning light or traction control light stays on or flashes
- Speedometer reads incorrectly or stops in many vehicles
- Unpredictable braking behavior or loss of ABS in certain conditions
- Stability control may be degraded or disabled
- Cruise control may behave erratically in some vehicles
These signs indicate the sensor or its wiring is suspect, and continuing to drive can increase the risk of a crash, especially in wet or icy conditions.
Safety considerations before you drive
If the warning lights are on or you notice any symptoms, plan to minimize risk by avoiding high-speed driving, heavy braking, or sharp maneuvers. When possible, arrange a tow to a repair shop rather than driving long distances. If you must drive a short distance, go slowly and leave extra room for braking, particularly on wet or slippery surfaces.
What to do if you must drive to a shop
Before driving to a service center, consider these precautions:
- Keep a larger following distance and brake gently to avoid surprises if ABS engages
- Avoid sudden steering or heavy acceleration
- Check tire condition and pressure; ensure wheels are balanced and free of damage
- Know your vehicle’s manual for any model-specific guidance on ABS warning lights
These steps help reduce risk, but they do not restore ABS or traction-control function.
Repair options and costs
Repair approaches depend on the root cause. Typical fixes include:
- Wheel speed sensor replacement (per wheel)
- Wiring harness repair or connector replacement
- Reluctor ring replacement or axle bearing inspection (on some designs)
- Brake module or ECU updates in rare cases
Cost varies by make and model, region, and whether the sensor is replaced individually or as part of a larger hub assembly. Ballpark ranges are roughly: sensor $50-$250, wiring/hub parts $20-$300, plus 1-3 hours of labor ($80-$150 per hour in the U.S.). In total, expect a few hundred dollars to upwards of $700 or more for a full sensor replacement and related repairs. Always obtain a written estimate before work begins.
Summary
A faulty wheel speed sensor can disable or limit critical safety systems, affecting braking and stability. You can drive to a shop, but it is not recommended, and you should minimize risk by driving gradually and avoiding harsh conditions. Seek professional diagnosis and repair promptly to restore ABS, ESC, and speed sensing as soon as possible.