What are the effects after a vehicle is flooded?

3 Answers
MacAllie
07/24/25 12:15am
It can cause a short circuit. After flooding, sewage can enter the vehicle's electrical appliances or wiring. Below are the detailed explanations of related content: Introduction: Residual moisture in the vehicle's circuits can cause short circuits. After flooding, sewage will enter the vehicle's electrical appliances or wiring. This moisture must be thoroughly dried and removed, ensuring complete insulation. Any moisture inside components like the fuse box must be completely removed! You can drive away immediately if the situation is minor. However, if the water level has risen inside the vehicle, it's best to just briefly assess the damage and avoid starting the vehicle. Starting the engine at this point could very likely cause secondary damage to the engine, affecting later insurance claims. Impact: Because water has entered the engine's intake, it can reach the combustion chamber. Since water is poorly compressible, once it enters the combustion chamber, it can cause the engine's pistons to bend, rendering the engine completely inoperable and requiring major repairs. In such cases, remember not to start the car. Immediately call your insurance company to report the flooding situation and have them arrange for a tow truck (insurance companies usually provide free towing within 50 to 100 kilometers in urban areas) to take the vehicle to a repair shop for inspection and repairs.
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VanIker
08/10/25 7:54pm
My old car got half of its wheels submerged in water last summer, and since then, it's been nothing but trouble. Water got into the engine, making it hard to start, and upon disassembly, we found rust in the cylinder block, forcing a major engine overhaul that cost nearly ten thousand yuan. The transmission fluid also got waterlogged and emulsified, requiring several oil changes to fix. The electronic systems inside the car were even worse—the central control screen works intermittently, and several sensors have failed, causing the dashboard to give false alarms. The water-soaked sponge under the carpet still smells moldy, even after being taken out and sun-dried, and the odor gets worse on rainy days. Water-damaged cars are prone to short circuits in the electrical system, which are expensive and troublesome to repair. I advise everyone to avoid letting their cars get submerged in water if possible.
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AddysonLee
09/23/25 8:41am
I've seen too many flood-damaged cars, and water reaching the chassis basically means they're totaled. When core components like the engine and transmission get flooded, they'll rust and seize up, making repairs more expensive than buying new ones. The electrical systems are even more fragile—flooded headlight control modules can short-circuit and blow fuses, while corroded wiper control modules will fail. Once the wiring harnesses get soaked, they're nearly impossible to completely dry out, leading to future electrical leaks or even spontaneous combustion. I've seen some flood-damaged cars that, even after being barely repaired, had a persistent musty smell from the AC vents that never went away. Rust on the chassis and body metal severely compromises safety, making every drive nerve-wracking. Even repair shops avoid these cars, and they're practically worthless in the used car market.
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