Why Does Water Enter Car Doors When It Rains?

[MacIsabella]

There are typically two reasons for this issue: water entering while the vehicle is in motion or while it is parked. There are gaps on the car body and doors, making it inevitable for rainwater to seep into the doors during rainy weather, leading to water ingress. The reasons for water entering the car cabin during rain are as follows: 1. Rainwater entering through the windshield: It might be due to the rear windshield not being properly closed, allowing rainwater to enter during rainy weather, resulting in water under the seats. Ensure all windows are closed to prevent water ingress. 2. Poor door sealing: If the rubber seals are not installed correctly, repeated closing and compression of the doors can cause the seals on both sides to deform, reducing the car's sealing effectiveness. In severe cases, this can lead to water pouring into the car during rain. 3. Sunroof leakage: Pay attention to the waterproofing of the sunroof. The sunroof is sealed with rubber gaskets, so it's important to keep these seals free of dust during use. Especially in winter or after long trips, regularly clean them with a duster to maintain their effectiveness.

[MacChloe]

Last week when it rained, I found water inside my car door and was shocked, thinking the car was broken. I asked an experienced driver friend, and he said the most common issue is aging rubber seals around the door. Hot or cold weather can make them harden and crack, allowing rainwater to seep through the gaps. He told me to check the drainage holes at the bottom of the door—if those small holes are clogged with mud, water can accumulate inside the door and eventually leak into the car. I checked myself and noticed several gaps in the seals that clearly need replacement. He recommended buying new seals from an auto repair shop and parking in the shade more often to extend their lifespan. If too much water gets in, the electrical circuits inside the door could short-circuit, causing even bigger problems.

[Declan]

Over the years of car repair, dealing with water leakage in car doors is quite common. In most cases, it's due to worn door seals or clogged drainage holes. The seals lose elasticity over time, creating gaps that allow rainwater to seep in along the door edges. The drainage holes at the bottom of the door often get blocked by dirt and need cleaning. I recommend car owners first check if the seals have softened or deformed - replacing them is straightforward. For drainage holes, simply use a thin wire to clear them. As a preventive measure, inspect them once before each rainy season to avoid water accumulation inside the door, which could corrode metal or electronic components, ensuring safe driving.

[VanCalvin]

With over 30 years of driving experience, I've encountered water leakage into the car doors several times during rainy days, mainly due to aging sealing strips or door deformation preventing a tight closure. I've learned not to panic when this happens. First, check if the windows are properly closed, then clean the drainage holes at the bottom of the door. Installing rain guards on the doors can prevent water from getting in, and replacing old seals promptly is crucial. Don't ignore these minor issues, as prolonged neglect can lead to door rust.