Can car doors drain water by themselves?

[LaAmelia]

Car doors can drain water by themselves. Here is a detailed introduction to the automatic water drainage of car doors: 1. Drain valves: When vehicles leave the factory, the bottom edges of the doors are equipped with drain valves. Each door has three drain valves. When the door is closed, the drain valves are squeezed and automatically open, allowing water to drain. 2. Clogged drain valves: If the door is deformed or covered with dust, asphalt, mud, etc., the drain valves may become clogged, affecting the drainage rate. In this case, pressing the drain valve manually will widen the gap, allowing water to drain. 3. Automatic rebound of drain valves: After the three doors drain water in sequence, the drain valves will automatically rebound once the water has drained.