Can Flood-Damaged Cars Still Be Driven?
1 Answers
Yes, but it is not recommended. Flood-damaged cars pose significant safety hazards, meaning they often leave lingering issues. Electrical circuits are prone to short circuits or even fires. While they can be repaired to some extent, even after repairs, substantial safety risks remain. Most auto repair shops, including authorized service centers, are reluctant to work on flood-damaged vehicles due to the persistent issues, primarily contamination and electrical system problems. Below are relevant details: 1. Electronic System Failures: Modern vehicles are equipped with various functions, almost resembling a collection of electronic components. Non-professional off-road vehicles rarely have waterproofing for onboard electronics. After water exposure, electronic modules related to the engine are highly susceptible to short circuits due to rust and corrosion. Additionally, car wiring typically runs along the bottom edges of doors, making it easy to soak. If these modules or wiring fail, minor issues may cause a function to stop working, while severe cases can lead to vehicle damage or even fires from short circuits. 2. Engine Failure: When water levels exceed the engine's air intake, water naturally flows into the cylinders, creating an air-water mixture. While air is compressible, water is not. This means that when the crankshaft pushes the connecting rod to compress the piston, water resistance causes the connecting rod to bend and deform. If the owner attempts to restart the engine after it stalls due to water intake, the immense counterforce can cause the bent connecting rod to rub against the cylinder wall, instantly puncturing the engine block—resulting in astronomical repair costs. This is why it is crucial never to let the engine stall once the vehicle is submerged in water.
