What to Do When the Car is Full of Fog?

2 Answers
LaGriffin
07/28/25 11:33pm
When the car is full of fog, you can solve it by opening windows for ventilation, turning on the air conditioner's cold air, or using detergent to make an anti-fog spray. Here are the specific solutions for a car full of fog: 1. When the fog is not heavy, you can appropriately open both side windows to allow air convection, which eliminates the temperature difference on both sides of the windshield, making it difficult for fog to form naturally. 2. Turning on the air conditioner's cold air can quickly eliminate fog. However, this method is not suitable for prolonged use in cold weather or during rain or snow. 3. Detergents can prevent fog. Mix detergent with water in a ratio of about 1:10, then pour the mixed solution into a spray bottle and spray it inside the car. This method is low-cost and highly cost-effective.
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DeRiver
08/12/25 3:54am
A few days ago, I encountered this issue while driving my child to school—sleet weather completely fogged up the car interior. I immediately turned on the air conditioning defogging mode and adjusted the vents to the windshield position. Cold air works faster but freezes your hands, while warm air is slower but more comfortable—choose based on the current temperature. If the rear window fogs up, remember to press the heating button (the one with the serpentine red line). It’s best to carry a dry towel for emergency wiping, but wiping while driving is too dangerous! Later, I bought an anti-fog spray and apply it to the inner side of the glass every two weeks—water droplets slide right off without fogging.
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