Yaw Rate Sensor

Stability control uses it. It often includes acceleration sensors. It may sit in the airbag unit. The sensor must be mounted firmly in the correct position because it detects small movements. Replacement often requires a zero-point calibration with the car on level ground. Fault codes can also appear if the sensor reports values that do not match steering angle and wheel speeds. Check wiring and mounting before replacing the sensor.

Micro-mechanical elements detect rotation.

Loose mounting causes faults. Calibration may be needed.