What Causes Frost on the Car's Windshield?

1 Answers
RoseLee
07/24/25 5:26pm
Frost on the car's windshield is caused by the temperature difference between the warm interior and cold exterior. The carbon dioxide exhaled by passengers inside the car condenses into moisture when it comes into contact with the cold glass. Solutions for frost on the windshield: 1. Open the windows for airflow: When the fog is not too heavy, slightly open both side windows to allow outside air to circulate, reducing the temperature difference and removing the fog. 2. Press the front windshield defogging button on the central control panel and adjust all air vents to face the windshield. 3. Spray defogging agent evenly onto a soft cloth and wipe the windshield, or apply it directly to the glass. Methods to prevent frost on car glass: Applying a plastic film to the glass can block direct contact between the glass and cold air, reducing the condensation of water vapor in the air on the glass, which forms fine frost.
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