Heated Glass Element: Description and Operation

How the Circuit Works

Fuse 8 (in the under-hood fuse/relay box) supplies battery voltage at all times to the rear window defogger relay contacts. With the ignition switch in ON (II), fuse 36 (in the under-dash fuse/relay box) supplies battery voltage to the rear window defogger relay coil and to the heater control panel.

Upon you press the rear window defogger switch (in the heater control panel), the heater control panel provides ground for the rear window defogger relay coil, energizing the relay and supplying battery voltage to the rear window defogger.

To turn off the rear window defogger, press the rear window defogger switch a second time, or turn the ignition switch to LOCK (0).