How to Deal with Water Accumulation Sound in Car Doors?
2 Answers
Water accumulation in car doors indicates clogged drainage holes. After rain or car washing, water remains trapped inside the door. Simply use a small screwdriver to unclog the drainage holes located under the door's lower seal strip, removing mud and debris to restore proper drainage, followed by regular maintenance. If DIY is challenging, seek assistance from a 4S shop. Below are additional details: Function of Drain Valves: All vehicles are equipped with drain valves at the bottom edge of doors upon leaving the factory. Designers anticipated potential water ingress during initial door design. Typically, each door features three drain valves. Under normal conditions, these valves automatically open when the door is closed due to compression, serving the primary function of automatic water drainage.
That sloshing water sound in your car door is annoying, but don't worry—it's usually just clogged drainage holes. There are small holes at the bottom of doors designed to drain water out. When rainwater or car wash water gets in, debris like leaves or mud can block these holes, trapping water inside that creates that sloshing noise. I've dealt with this before—an easy fix is gently poking through the holes with a thin wire or straw to restore drainage. If the holes aren't clogged, worn door seals might be letting water seep in, requiring replacement. Remember: standing water causes internal rust, wire damage, and speaker problems—costly long-term repairs. Park away from trees, regularly inspect door seams, and avoid high-pressure washing door edges. These habits prevent issues. If unsure, visit a trusted mechanic for peace of mind and safety.
