Is it necessary to replace the wiring of a water-damaged car?

[Julianna]

If a vehicle has been submerged in water, the following components must be replaced: 1. Engine: If the vehicle did not stall or was not started after water ingress, the engine oil, oil filter, air filter, and sealing rings during the drainage process of engine components need to be replaced. If the engine stalled or was restarted, in addition to the above components, the engine connecting rods may need to be replaced based on the situation, requiring an engine overhaul. 2. Transmission: Transmission fluid and transmission filter. 3. All vehicle fluids: All vehicle fluids, including engine oil, coolant, power steering fluid, brake fluid, etc., must be completely replaced if the water damage is severe. 4. Bearing components: If the water level reached the engine hood and the submersion time was relatively long, it is recommended to replace bearing components to avoid rust-induced noise or damage later on, such as the generator, air conditioning compressor, and wheel bearings. 5. Depending on the extent of water ingress: Electrical components and wiring that have been damaged by corrosion should be replaced based on the extent of water ingress.