Why water is worse than it looks
A vehicle that's sat in water may dry out, start, and even drive for a while. The problems show up later. Water gets into wiring harnesses, connectors and control modules and causes corrosion that surfaces months afterward as random electrical faults.
It soaks into seat motors, carpet padding and sound insulation and never fully leaves. If the water rose high enough, it contaminates engine oil, transmission fluid and differential fluid. That's why a flood vehicle is worth less than a collision vehicle with the same visible damage.


