Where is the door drain valve located?
2 Answers
The door drain valve is located at the lower edge of the car door. There are three small black square holes at the bottom. Press the squares inward by hand to drain the accumulated water inside. The drain valve has gaps to allow self-draining. Water entering car doors is a normal phenomenon during rainy days or car washing, as external water flows into the door through the window seal strips. To prevent water from entering the cabin, drain valves are designed at the bottom of car doors. These valves automatically open through compression when the door is closed to enable self-draining. If automatic drainage fails, it may be due to door deformation or internal accumulation of dust, asphalt, or mud. When the drain valve malfunctions, promptly remove any foreign objects inside the door.
The door drain valve is located at the bottom edge of the door, where a small hole or valve is designed to drain rainwater and accumulated water. Every time after washing the car or a rain shower, I make it a habit to check it to prevent clogging, which could lead to water accumulation inside the door and cause rust. Most vehicles have such holes at the bottom of each door—some are hidden beneath rubber seals, while others are directly exposed. You can easily locate them with a gentle poke. If clogged, you can use a soft hose to blow air or a fine needle to clear it. I recommend regular cleaning, especially after rain and during seasonal changes, as this can extend the door's lifespan. Remember not to use hard objects to poke it, as this may damage the valve body. Over time, these small details become crucial—neglecting them might lead to door panel rot or strange noises.
