How to Perfectly Handle Water Leakage Above the Car Door?
2 Answers
Open the car door and fully lower the window, then use a small air gun to blow. If the amount of water is significant, you can directly go to a repair shop for vehicle maintenance. When the vehicle is moving and water seeps in, if the water level reaches above 20 centimeters, there is a risk of water entering the engine. When the vehicle is parked and water seeps in, high external water levels may even endanger the battery and some of the vehicle's electrical equipment due to water immersion.
I've dealt with door leaks several times myself, and the perfect solution requires a step-by-step approach. Start with the basics: inspect the rubber seal on the door frame to see if it's cracked from aging or obstructed by debris. If the seal is faulty, you can buy a new one online for a few bucks and replace it—just make sure it's properly aligned and firmly pressed into place without gaps. Next, check the window tracks and drainage channels; clear any blockages like dust or leaves using compressed air or a small brush. Last time I had a leak, it was because the drainage channel was clogged, preventing water from flowing out through the drain holes. If the seal and drainage are fine, the issue might be a torn waterproof membrane inside the door, which requires removing the interior panel for inspection. In this case, it's best to leave it to a professional shop to avoid compromising the seal. Throughout the process, perform a water spray test—have an assistant spray water on the roof while you check for leaks inside the car—to ensure a thorough fix and prevent future recurrences.
