What problems can occur with a water-damaged car?

2 Answers
AvaLee
07/24/25 6:50pm
Structural and electrical issues may arise in the vehicle. Moldy odor inside the car: The car contains a large amount of sponge, fireproof cotton, insulation cotton, and other fabric materials in the interior and flooring, which are highly absorbent. During repairs, these fabric materials are often not replaced but merely dried. Sometimes, internal moisture cannot be completely removed, leading to a strong moldy odor in the car during hot summer months. This moldy odor can sometimes be harmful to health. Electrical problems: Water can enter the wiring harnesses and the casings of some onboard computers. After the vehicle is repaired, all functions may return to normal, but residual moisture in the circuits can accelerate the oxidation and damage of these wires or circuit boards. Corrosion: Moisture-induced corrosion can occur as some metal components inside the car are not treated with anti-corrosion measures. After the vehicle is repaired, residual moisture can accelerate the corrosion and oxidation of these metals.
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NolanDella
08/11/25 10:27am
Water damage to a car can cause serious trouble. The most critical issue is water entering the engine. If water gets into the cylinders, starting the engine can bend the connecting rods and render it completely useless. It's common for electrical systems to corrode and short-circuit after being submerged, causing the central control screen and sensors to frequently malfunction. The most annoying part is the musty smell—the sponge in the carpet absorbs water and never fully dries, leaving a lingering odor months later. Rust on the frame and chassis is even more dangerous, especially in areas like door hinges and subframes, which can compromise structural safety over time. My advice is not to rush into starting a water-damaged car—have a professional mechanic inspect it first to avoid endless headaches.
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