
Under normal circumstances, car doors do not leak water. Here is a detailed introduction about car doors: 1. Overview: The car door (car-door) provides an entrance and exit for the driver and passengers, isolating external interference. It can reduce side impacts and protect the driver to a certain extent. The design of the door is also related to the aesthetics of the car. 2. Others: The quality of a car door is mainly reflected in its anti-collision performance, sealing performance, and ease of opening and closing. A car door consists of the door body, door accessories, and interior trim panel. Car doors can be classified into forward-opening, reverse-opening, and horizontally sliding types.

Speaking of car doors getting water inside, I once drove in a heavy rainstorm and suddenly found the interior all wet because rainwater seeped in through the window seals. It's true that car doors can let water in—normally, they're designed with drainage holes at the bottom to let rainwater out without issue. But the hidden danger is that these holes can easily get clogged by small debris. My car, for example, had its drainage holes blocked by leaves a few times, causing water to accumulate inside. Over time, rust becomes a problem—the inner door panels can corrode, even leading to malfunctioning window switches or electrical issues that prevent the car from starting. My lesson learned is to check the drainage holes every few months and use a thin stick to clear any blockages. When washing the car, avoid aiming high-pressure water jets directly at the door seams to prevent more water from leaking in. If you overlook these details, repair costs won’t be cheap. In short, developing good habits can save you from such headaches.

From a technical perspective, water ingress in car doors is quite common. If the sealing strips around the windows are not tight enough, rainwater may seep in. In terms of design, there are drainage holes at the bottom of the door, as small as pinholes, to channel water out. However, clogging is the key issue—dirt, leaves, or small insects can block the holes, causing water to accumulate and leading to short circuits in electrical components, such as door locks and window regulators. Water ingress doesn't only come from rain; high-pressure car washes are also a frequent cause. I recommend regular inspections. A simple method is to use a toothpick or wire to clear the holes and ensure they remain unobstructed. If water remains stagnant for long periods, it accelerates corrosion of metal components, compromising safety. When parking, choose clean areas and avoid spots with many trees to reduce the risk of clogging. Though these maintenance steps may seem minor, they can prevent major issues down the line.

Water ingress in car doors should not be underestimated as it directly impacts driving safety. When rainwater seeps through gaps and the drainage holes are clogged, accumulated water can prevent doors from opening or cause them to jam, making emergency escape difficult. Water accumulation may also lead to electrical short circuits, such as malfunctioning window controls, increasing accident risks. I always remind myself to conduct regular checks, especially before the rainy season, to ensure the drainage holes are clear. If unusual noises or water stains are noticed when opening the door, address the issue immediately without delay. Safety comes first—during every maintenance session, have the technician check the drainage holes to protect both your family and your vehicle.

Preventing water ingress into car doors relies on daily maintenance. My experience suggests cleaning the drainage holes under the doors every three months to prevent mud and sand blockages. Avoid using a high-pressure water jet directly on door seams during car washes to prevent water backflow. Check the sealing strips for aging during seasonal changes and replace them promptly to avoid gap enlargement. Water ingress poses multiple risks: accumulated water can cause rust on the inner door panels, lead to mold growth and unpleasant odors, affecting health. A handy tip is to slightly open the door after parking to allow air circulation, aiding the drainage holes. Adopting these habits ensures your car doors remain dry and durable.


