Rear Defroster Inoperative Due to Physical Heating Grid Damage

This is the most frequent cause, typically resulting from ice scraping, improper window tint removal, or aftermarket tint application. Confirm this by performing a close visual inspection of the rear glass grid lines. Look for visible scratches, breaks, or gaps in the conductive material. The presence of these gaps indicates a broken circuit that prevents the entire grid or specific sections from receiving necessary current.