How to Deal with Fog on the Windshield of a Car in Winter?
3 Answers
Methods to handle fog on the windshield of a car in winter: 1. Open the side windows slightly to create air convection between the inside and outside of the car, reducing the temperature difference and allowing the fog to gradually disappear; 2. Turn on the warm air from the air conditioner to defog using the blown air, while also activating the car's external air circulation to promote air convection; 3. Use professional defogging spray, applying it to the inner surface of the car glass and then wiping it clean, which not only removes dirt but also forms a protective film to prevent moisture from condensing into fog on the glass; 4. Use dish soap to prevent fogging by diluting it with water at a ratio of 1:6, then wiping the car glass with a soft cloth soaked in the solution. After the dish soap dries, wipe it clean with a dry cloth, ensuring the windows remain fog-free for about 10 days.
As a seasoned driver who frequently takes long trips in winter, I fully understand the frustration of windshield fogging. This is mainly caused by temperature differences between the inside and outside of the car leading to moisture condensation. The most direct solution is to turn on the car's air conditioning dehumidification mode, setting it to blow toward the windshield to quickly dry the air; if the fog persists, try cracking open a window slightly to ventilate and reduce humidity. Before starting the car, I make it a habit to warm up the vehicle for a few minutes to heat up the glass. For prevention, it's advisable to regularly clean the air conditioning filter to avoid blockages; keeping a clean towel in the car can be handy for emergency wiping. Safety first—when fogging occurs, be sure to slow down and avoid taking risks while driving. These simple tips, learned from years of driving experience, can save a lot of hassle.
I encounter this issue every time I drive, especially on winter mornings right after starting the car. A quick solution is pressing the defog button on the AC, which automatically adjusts the fan speed and temperature. If your car doesn't have this feature, simply turn on the warm air and direct it toward the windshield. Remember, having more passengers or damp clothes inside can worsen fogging—switching to external air circulation helps. I always keep a bottle of defogging spray handy; a quick spray and wipe restore clarity. For daily prevention, cracking the windows when parked helps release moisture, reducing fog buildup next time. These tips are convenient, efficient, and most importantly, don’t waste time—safe driving comes first.
