The C0475 code on a 2022 Lexus ES indicates a problem in the longitudinal acceleration sensor circuit. This sensor measures forward and backward G-forces during acceleration and braking, contributing data to the Vehicle Stability Control (VSC) system for enhanced brake and traction management.
Longitudinal Sensor Purpose
The longitudinal acceleration sensor detects how hard the vehicle is accelerating or decelerating. This data helps the VSC system understand weight transfer during braking and acceleration, optimizing ABS intervention and traction control response. The Lexus Safety System+ features use this sensor data for functions like Pre-Collision System braking intensity.
Symptoms Present
With C0475 active, the VSC warning light and VSC OFF indicator will illuminate on the dashboard. The ABS light may also activate. Advanced safety features that rely on accurate deceleration data may be affected or disabled. Normal braking remains functional, but electronic optimization of braking behavior is compromised.
Diagnostic Focus
The longitudinal sensor is typically integrated with lateral and yaw sensors in a combined sensor module. This module mounts near the vehicle's center of mass, usually under the center console. Inspect the electrical connection and wiring for damage. Use Toyota/Lexus diagnostic equipment to monitor live sensor data and verify readings respond appropriately to vehicle movement.
Repair Path
Connection or wiring issues can often be repaired without sensor replacement. If the sensor module has failed, replacement requires careful installation and calibration. Lexus uses a zero-point calibration procedure that must be performed on level ground with the vehicle stationary. This establishes the sensor's reference baseline for accurate measurements.