Where does the water from the windshield drain out?
2 Answers
The windshield drainage holes are generally located between the engine compartment and the windshield. Here are the advantages of windshields: 1. Aesthetics and transparency: As vehicle speed increases, wind carrying sand, dust, and other debris can impair driver visibility and significantly reduce comfort. After the invention of glass, its attractive appearance and excellent transparency quickly made it suitable for automotive use. 2. Enhanced safety: Tempered glass and other composite glasses have replaced ordinary glass. These improved glasses offer higher strength, maintaining structural integrity even when shattered, thereby minimizing damage. Premium windshields now often include UV-protective coatings to safeguard eyes.
Every time it rains, water flows from my car's windshield into the drainage channel beneath the wipers. There are drainage holes on both sides of the channel that lead to behind the front wheels. I remember during the last typhoon, branches blocked the holes, causing water to backflow into the air conditioning intake, completely soaking the passenger side carpet. Now, every month, I use a screwdriver to pry open the engine hood, use a flashlight to check and clear leaves and mud, and then use an air gun to blow through the drainage pipes. Older cars need extra caution, as aging and cracked rubber pipes can allow water to seep into the ECU circuit board. Also, be careful when modifying the windshield—some low-quality seals can block the drainage path, and accumulated water corroding the A-pillar can lead to significant damage.
