Posted on 4/20/2022
The defrosters in your car are a safety feature that helps to clear condensation and frost from your front and rear windshields. While both defrosters work to evaporate moisture from the windows, they do so in different ways. Your front defroster works by directing hot air up through vents in the dashboard to defog the windshield from the inside. In some cars, the defrost controls will also activate the air conditioning and compressor. In warmer weather, cooling the air with A/C first can remove more moisture from the air to defog the windows better. The rear defroster, in most cars, is electric. This system consists of rows of very thin heating elements on the inside of your rear window or hatch. These heating strips are connected to your vehicle’s electrical system and are controlled by a dashboard switch. The control switch typically runs on a timer that will automatically turn off the power after several minutes. Causes of Rear Defroste ... read more