Rear Left Wheel Speed Sensor for Toyota

This rear-left wheel speed sensor is a key input device for the ABS and traction systems ?. It is needed to measure how fast the rear left wheel is turning, so the control unit can prevent wheel lock, reduce skids, and keep braking stable on wet or loose roads.

How It Works

The sensor reads the rotation of a tone ring (or magnetic encoder) and converts it into an electrical signal. That signal is sent to the ABS/vehicle stability module, which compares wheel speeds and adjusts brake pressure when it detects slip.

When the Sensor Is Failing

If it is broken, contaminated, or the wiring is damaged, the system may lose accurate wheel speed data. Common results include ABS warning light, traction control light, longer stopping distance on slippery surfaces, and ABS not activating when you need it most ⚠️. In some cases you may notice uneven ABS operation or speed-related fault codes.

Why Replacing It Matters

A healthy sensor helps restore proper ABS response, safer braking control, and reliable stability support—especially with load or off-road use.

Compatibility

• Hilux
• Hilux (Double Cab)
• Hilux (Scb/Xtr)
• Hilux Champ