Do You Need to Drain Water from Car Doors After Rain?

[Hawthorne]

After rain, there is no need to drain water from car doors. Specific reasons: Generally, there are drainage holes at the bottom that will drain water at any time. If they are blocked, you need to unclog the drainage holes to let the water out. When rainwater enters the door, it will follow a fixed water path and be discharged through these drainage holes, preventing rust inside the door and protecting the electrical components inside. Principle: Under normal conditions, the door drain valve will automatically open when the door is closed due to the squeezing action, serving the main purpose of automatic drainage. The door drain valve will automatically discharge accumulated water inside the door. However, if the door is deformed or if there is excessive dust, asphalt, or mud around the valve, it can lead to clogging of the drain valve, thereby affecting the drainage rate. In such cases, simply pressing the drain valve by hand will widen the gap, allowing water to be easily discharged. Drain the three doors in sequence, and after the water flows out, lift it open—it will spring back on its own.