Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The heated seat is activated when the heated seat switch sends a ground signal to the heated seat module input from circuit 1255 (WH/RD) to activate LOW heat or OFF. The system will remain ON until the module times-out or is switched OFF.