Rear Defogger Switch: Description and Operation

Rear Window Defogger Switch:

The switch for the EBL system contains the control and timing circuitry. The rear window defogger switch is located in the accessory switch bezel on the instrument panel.

When the rear window defogger switch is turned to the ON position, current is directed to the rear defogger grid lines and the heated power mirrors (if equipped). The heated grid lines heat the glass to help clear the surface of fog or frost.

Depressing the rear window defogger switch energizes the integral rear window defogger relay, which provides electrical current to the rear window defogger grid and the outside rear view mirror heating grids (when equipped). An amber indicator lamp in the defogger switch illuminates to indicate when the EBL system is On.

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