Speed Sensors

When relying on your vehicle, you need to ensure all parts are working perfectly and in unison. This is where a vehicle speed sensor is one of those small but critical pieces in the vehicle management system. Measuring transmission/transaxle output or wheel speed, your VSS talks to the ECM which uses this information to modify engine functions such as ignition timing, air/fuel ratio, transmission shift points, and to initiate diagnostic routines.

What Are Wheel Speed Sensors?

Wheel speed sensors are crucial components in modern vehicles, used to monitor the speed at which each wheel rotates. They provide real-time data to systems such as anti-lock braking (ABS), traction control, and electronic stability control. By accurately measuring wheel speed, these sensors help improve vehicle safety and handling.

Types of Wheel Speed Sensors

There are two primary types of wheel speed sensors: passive and active. Passive sensors generate an alternating current signal as a toothed ring passes by a magnetic sensor, while active sensors use electronic components to produce a digital signal. Both types deliver data to the vehicle’s control unit, though active sensors generally offer greater precision and reliability.

Common Issues and Maintenance

Wheel speed sensors can experience problems such as dirt buildup, corrosion, or wire damage, which may result in erratic readings or warning lights on the dashboard. Regular inspection and cleaning around the sensor area can prevent many issues. Additionally, addressing damaged wiring or connectors promptly ensures the system functions correctly.

Replacement Considerations

When replacing a wheel speed sensor, matching the exact specifications for the make, model, and axle position is important. Proper installation helps maintain system accuracy and protects other vehicle safety features that rely on sensor data. Consulting the vehicle’s manual or a professional technician is advisable for this task.

Stocking not just the widest range of speed sensors for your vehicle, Repco also have a full array of electrical parts and vehicle management solutions specifically suited to whatever you drive.