WSS-475 PAT Wheel Speed Sensor LHF

Wheel speed sensors, originally introduced for Anti-Lock Braking Systems (ABS), are now integral to numerous modern vehicle systems. With a focus on safety and customer demand, these sensors have become essential for the operation of intelligent safety systems and other vital vehicle functions. - Advanced data transmission systems like the Controller Area Network (CAN) allow multiple control units to utilise wheel speed sensor data. - Crucial for driving safety, influencing systems such as ABS, TCS (Traction Control System), ESC (Electronic Stability Control), ADAS (Advanced Driver Assist System), and ACC (Adaptive Cruise Control). - Supports engine management, transmission control, and navigation systems. - Significantly impacts vehicle dynamics, driving comfort, safety, emissions, and fuel consumption. Types of Wheel Speed Sensors: - **Passive/Inductive Wheel Speed Sensors**: Inductive analogue types that do not require an external power supply. Effective but can become inaccurate at low speeds and are sensitive to positioning and damage during maintenance. - **Active Wheel Speed Sensors**: Digital hall sensor types with integrated electronics, requiring a power supply from the ABS module. Accurate wheel speed detection from stationary, crucial for traction control and hill descent control. Smaller and lighter design, insensitivity to vibration and temperature fluctuations, and reduced electromagnetic interference. Symptoms of a Faulty Wheel Speed Sensor: - Multiple warning lights displayed on the dashboard. - Wheels locking during braking. - Pulsation of the brake pedal. - Erratic or no speedometer operation. - Other seemingly unrelated system failures. Troubleshooting and Diagnostics: - Use a suitable diagnostic tool to read fault codes. - Inspect the wiring for damage or breaks. - Inspect the mechanical assemblies for issues. - Check the output signal using a scope or suitable diagnostic tool. - Check the supply voltage for active sensors. - Check the sensor resistance for inductive sensors. 12 Months Warranty * For correct fitment ensure the vehicle is listed in the compatibility list AND read any notes associated with the product. If there are no vehicle details listed, please send a message.