Heated Seats

PRINCIPLES OF OPERATION

Heated Seats
The driver and passenger heated seats share a common battery and ignition feed. A shared ground source supplies the heated seat control switch. When the heated seat control switch is pressed with the ignition switch in RUN or START, a momentary ground signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The cushion element and backrest element are wired in series and powered by the same output. The heated seat module will remain on until the heated seat control switch is pressed and a momentary ground signal is received. 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) in low setting and 42°C (107.6°F) in high setting and maintain the temperature until 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.