Will water on the car floor affect the electrical circuits?
2 Answers
First, it is necessary to completely disassemble all components of the water-affected area on the vehicle floor. After disassembly, thoroughly dry the parts. Once drying is complete, inspect the wiring conditions. If the wiring is severely water-damaged and cannot be repaired, replacement of the wiring is required. Otherwise, issues may arise during the vehicle's later use. The causes of water ingress on the vehicle floor are as follows: Water entering through the doors: This occurs when the vehicle wades through water, allowing water to seep in through the doors. Sunroof drainage pipe leakage: The sunroof drainage pipes of the vehicle may have leaks or blockages. Clogged drainage pipes: The air conditioning drainage pipes of the vehicle may be blocked. Any of the above reasons can lead to water ingress on the vehicle floor, affecting the normal use of the vehicle.
That time when my car got flooded in a heavy rain, the dashboard started flickering wildly, scaring me into towing it to the repair shop immediately. The mechanic lifted the floor mats and found the wiring harness connectors soaked in water, as soggy as waterlogged biscuits. He explained that most interior wiring runs through floor channels, especially the BCM module under the seats which is particularly vulnerable to water damage - at best causing window malfunctions, at worst frying the airbag circuits. Now after every heavy rain I religiously check the carpets for dampness with a flashlight. Friends, never make my mistake of cutting corners - the first thing after flooding must be disconnecting the battery negative terminal and airing out the car with windows open for three full days.
