Why can't I see clearly when the sun shines on the windshield?
2 Answers
The sun cannot affect the transparency of the glass. The unclear vision is caused by water vapor inside the car. At this time, turning on the fan or air conditioner can solve the problem. Opening the car window is also a method. Here are some related tips for windshield maintenance: 1. Use suitable wiper blades: Use dedicated or appropriate wiper blades and replace them in time (usually once a year) to prevent scratching the windshield. 2. Clean frequently: Keep the windshield clean regularly. If there are debris, try not to use the wiper to remove them. Instead, use a towel or other tools to carefully remove them. 3. Use dedicated glass cleaner: Use car-specific glass cleaner. This can maintain a clear view while increasing lubrication and reducing wear on the windshield.
I've been driving for nearly thirty years, and there are several common reasons why the windshield becomes hard to see when exposed to sunlight: it could be due to oil buildup on the glass surface, including road grime or bird droppings, which scatter light and create glare in the sun; or water spots left by rain, especially noticeable on sunny days after rainfall. A thin layer of dust can also blur visibility. I usually wipe the inner and outer surfaces once a week with professional glass cleaner, avoiding detergents to prevent oily residues. Aging window film should also be checked—consider replacing it with anti-glare film if it's over five years old. When parking, look for shade or a garage to avoid direct sunlight. Cleaning requires attention; otherwise, not only is visibility poor, but the risk of fatigued driving increases. Regular maintenance keeps the glass clear and safe for a long time.
