How to Troubleshoot the Electrical Compass: Self-Calibration
The electrical compass unit has a self-calibration function. It detects and compensates for magnetic anomalies caused by bridges, subways and large steel structures. When the vehicle leaves an area with a strong magnetic interference field (2, 400 mg or more), the electrical compass unit automatically begins calibrating after it receives the VSP signal from the gauge control module via the audio unit. If needed, you can manually calibrate the compass .