CODE OF VIRGINIA WINDSHIELD DEFROSTER OR DEFOGGER (ยง 46.2-1055.1) Every Virginia-registered motor vehicle manufactured for the 1969 or subsequent model years and required to be equipped with a windshield shall be equipped with a windshield defroster or defogger. The defroster or defogger shall be in good working order at all times when the vehicle is operated on the highways. HISTORY: 1990, c. 955.