Heated Seat Operation

The driver and passenger heated seat control buttons and indicators are located on the FCIM  . The heated seat system functions independently of the climate control system. Each time the heated seat button is pressed, the FCIM  decreases one setting (the sequence is hi, low, off, hi, etc.). When a heated seat is set to hi, both LED  indicators above that heated seat's control button illuminate. When a heated seat is set to low, only one LED  indicator above that switch illuminates. When off, no indicators illuminate.

If equipped, the driver and passenger heated seat buttons are selected from the FDIM  (touchscreen). The FDIM  is mounted directly to the APIM  . The heated seat system functions independently of the vehicle's climate control system. Each time the heated seat button is pressed, the APIM  sends the request to the GWM  using the Infotainment Controller Area Network (I-CAN). The GWM sends the message to the FCIM  which decreases one setting (the sequence is high, low, off, high, etc.).

When activated, the FCIM  supplies voltage to the selected seat heater circuit. Each seat cushion heater mat and backrest heater mat is connected in a series circuit to the FCIM  and powered by the output circuit for that seat. The FCIM  monitors inputs from a temperature sensor located in each seat cushion heater mat, and maintains seat temperature by cycling the heater circuits on/off. The heated seat remains ON until the heated seat switch button is pressed to cycle the FCIM  OFF or the ignition is set to OFF.

If a fault is detected by the FCIM  , the module stops supplying voltage to that individual left or right seat that the fault was detected on until the ignition is turned OFF and then ON.