Heated Glass Element Switch: Description and Operation

The rear window defogger switch is integrated into the A/C-heater control mounted in the center of the instrument panel. The rear window defogger switch and the rear window defogger LED indicator cannot be repaired and, if faulty or damaged, the A/C-heater control must be replaced.

An LED indicator will illuminate when the rear window defogger switch is activated. The switch energizes the timing circuit integral to the A/C-heater control which then activates the rear window defogger relay. The rear window defogger relay controls the current to flow to the grids of the rear window defogger. The rear window defogger system will operate for approximately ten minutes or until the rear window defogger switch or ignition switch is turned off.

The rear window defogger switch cannot be repaired and, if faulty or damaged, it must be replaced.