What Causes Fogging on the Outside of the Windshield When Using Air Conditioning?

[StGabriel]

The fogging on the vehicle's windshield is caused by a significant temperature difference between the interior and exterior under current conditions. Solutions for windshield fogging: 1. Front windshield defrosting: Generally, the front windshield defrosting function is used to handle the front windshield based on the driving environment. If equipped with automatic air conditioning and the ability to select air vent positions, it is recommended to choose the front windshield and center vent positions and turn on the rear windshield heating function. This way, the temperature inside the car will be continuously regulated, preventing fogging. 2. Rear windshield heating: If it is not possible to select both directions for air venting simultaneously, turn on the front windshield defrosting function and the rear windshield heating function. If the side windows fog up, slightly opening the windows can quickly remove the fog. After closing the windows, once the interior temperature rises, no further fogging will occur.