4x4 HIGH and 4x4 LOW Indicators
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster receives the 4x4 HIGH and 4x4 LOW information from the PCM through the communication network. When either 4x4 high or 4x4 low are selected, the PCM provides a 4x4 status signal to the instrument cluster to turn on the appropriate indicator.