Heated Seat

Heated Seat
The driver and passenger heated seat modules share a common battery and ignition feed. A separate shared ignition feed supplies the heated seat control switches. When the heated seat control switch is pressed with the ignition switch in RUN or START, a momentary voltage signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The seat cushion element and seat backrest element are wired in series and powered by the same output. The heated seat module also will ground the separate indicator circuit at the heated seat switch to indicate an ON state. The heated seat module will remain on until the heated seat control switch is pressed and a momentary voltage signal is received, or until 10 minutes expire. If the ignition source is removed from the module, the heated seat module will enter an off state and will not return to ON until the switch is once again pressed with the ignition switch in RUN. The heated seat module is designed to heat the seat to 37.5°C (99.5°F) and maintain the temperature until timeout or switched off. This temperature is maintained by the heated seat module monitoring the temperature sensor located in the seat cushion element, and adjusting the current flow to the heating elements.