What to do when there is fog inside the car?
3 Answers
When there is fog inside the car, you can turn on the car's air conditioning to defog. The reason for fog formation inside the car is the significant temperature difference between the inside and outside of the vehicle, which causes fog to appear, especially on the windshield, making it difficult for the driver to see the road ahead. To eliminate the fog, you should reduce the temperature difference between the inside and outside of the car. If fog forms inside the car during winter due to the inside being too hot and the outside too cold, using the air conditioning's cold air function may affect comfort. Instead, you can use the warm air function, set the temperature higher, and increase the fan speed to quickly remove the fog. In summer, if fog forms because the inside of the car is too cold and the outside is too hot, you can turn on the air conditioning's external circulation function or lower the car windows to quickly defog.
The most annoying thing while driving is when the windows fog up, making it hard to see anything. I usually just turn on the air conditioning, crank up the fan speed, aim the vents at the windshield, and press the defog button. If it's too cold in winter, I use the heater to slowly clear the fog—it takes longer but keeps me warm. I always keep a bottle of specialized defogging spray in the car; wiping the windows with it can last for days. Recently, I learned a DIY trick online: mix dish soap with water at a 1:10 ratio and wipe the glass—once dry, it forms an anti-fog film, which is cheap and effective. Most importantly, avoid eating hot food or leaving wet umbrellas in the car, as these increase moisture. Opening the windows for ventilation also helps, though it’s not advisable in freezing winter weather.
Hey, let me tell you, foggy windows can be really dangerous, especially on rainy days. Now I immediately turn on the air conditioner's dehumidification mode as soon as I get in the car, just setting the temperature 2-3 degrees higher than outside. Remember to use the external air circulation - internal circulation actually makes fogging worse. The car's defogging function is truly magical, clearing up the fog in just 2-3 minutes with a button press. In emergencies without air conditioning, I keep a few packs of food desiccant in the glove box - they work great for absorbing moisture. And never wipe the glass directly with your hands - it just smears and leaves fingerprints. Once I tried replacing the wiper nozzle with anti-fog windshield fluid - it worked okay but wasn't cost-effective. The key is keeping the interior dry - wet floor mats need immediate attention.
