Heated Glass Element Switch: Description and Operation

The heated back window switch:
- is an integral part of the integrated control panel.
- sends a momentary ground signal to the Generic Electronic Module (GEM) when activated.
^ GEM then sends a ground signal to the heated back window relay, supplying power to the heated back window grid and heated side mirrors.
^ GEM starts the 10 minute time-out function. At the end of 10 minutes, the GEM will discontinue the ground supply to the heated back window relay. A second press of the heated back window switch and light during these 10 minutes will cause GEM to discontinue ground signal to heated back window relay, turning the system OFF.
^ If the GEM time-out function has started with ignition switch in ACC, and the ignition switch is turned to START the GEM timing is interrupted and will resume when ignition switch is turned to RUN.
^ Turning the ignition switch OFF will cancel GEM time-out function.