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SYNC System: Compass

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

The GPS antenna (integrated with the satellite radio antenna) is used to acquire the compass heading.

The compass data is sent through the GPS cable to the APIM. The APIM uses this data, in addition to wheel speed and wheel rotation direction messages from the ABS module, to calculate and provide accurate vehicle tracking. The APIM processes the data and transmits it through the LVDS cable to display on the touchscreen. In the event the GPS fix or signal is temporarily lost, the APIM continues to use the vehicle tracking CAN messages from the ABS module to maintain compass accuracy.

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