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What are the impacts of water entering car windows on the vehicle?

3 Answers
DanielaAnn
08/30/25 7:46am
The impacts of water entering the vehicle are as follows: 1. Electronic system failure: Modern vehicles are composed of a large number of electronic devices. Unless they are professional off-road vehicles, most cars generally lack corresponding waterproofing measures for their electronic equipment. 2. Engine failure: When soaked by rainwater, the vehicle's central computer and wiring are highly prone to short circuits. Once these modules are affected, the consequences can range from a single function failure to severe vehicle damage, or even fire caused by short circuits, with unimaginable outcomes. 3. Interior water damage: When water submerges the doors, the interior is likely to get wet. Rainwater contains many impurities and is unclean. Moreover, the post-rain car interior becomes a highly humid greenhouse environment, which is conducive to mold growth. If the vehicle is not dried promptly, mold can quickly ruin the fabric and leather materials inside the car.
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VanEdward
09/12/25 4:42am
Last time after my car window leaked, rust started appearing on the door frame, especially noticeable after rain. Over time, even the window regulator inside the door got stuck, making window operation squeaky and annoying. I also found the wiring harness inside the door panel got damp, causing the central locking system to occasionally malfunction, making the door not close tightly when parked. Worse, mold grew inside the car, leaving a musty smell that the AC couldn't eliminate. My friend's car had it worse - water ingress caused the ECU to short circuit, costing over a thousand to repair. Water damage has huge impacts. I recommend checking the window seal strips to nip problems in the bud. Don't delay, or minor issues become disasters, even depreciating your car's value.
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EliAnn
10/26/25 5:32am
Water entering the car window has quite serious effects on the vehicle. During inspection, I noticed it corrodes the metal structure inside the door, compromising the car body's strength and increasing maintenance costs. Water seeping into electrical wiring can short-circuit the window lift motor, causing intermittent failure of the door lock button. Pooled water also breeds mold, leading to coughing and discomfort. From a safety perspective, obstructed visibility increases accident risks, especially at night or during rainy weather. The root cause of water ingress may be aging seals or improper parking angles. Upon discovery, drain and dry immediately to avoid major repairs due to delay. Prevention is key, which can save a significant amount of money.
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