Heated Mirrors - Operation
OPERATION
When equipped, the heated mirror system is activated when the rear window defogger (EBL) system is turned on Heated Glass - Operation. When the heated mirror system is activated, an electric heater grid located behind the glass of each outside rear view mirror becomes energized and produces heat to help clear the mirror of ice, snow, or fog.
If the outside mirror heating grids are both inoperative, Electric Backlight System
The heating grid behind each outside mirror glass cannot be repaired and the mirror assembly must be replaced if the heating grid is found inoperative or damaged Outside Rearview Mirror - Removal.