Why is there water leakage under the car's passenger seat?
2 Answers
Water leakage under the passenger seat of a car is likely caused by door leakage. If the window regulator has been replaced, it may be due to improper sealing of the door waterproof membrane after the replacement. This happens because the waterproof membrane needs to be peeled off during the regulator replacement process. If the waterproof membrane is not properly sealed, heavy rain can cause water to enter the car. You can perform the sealing work yourself or replace the waterproof membrane. Common car faults are as follows: 1. Abnormal exhaust smoke: Black smoke from the car's exhaust pipe usually indicates a rich air-fuel mixture and incomplete combustion; blue smoke typically means burning engine oil; white smoke usually suggests water in the fuel, water in the cylinders, or extremely low outdoor temperatures. 2. Abnormal odors: The burnt smell from non-metallic materials of brake pads and clutch plates, the distinctive odor of battery electrolyte, the scorched smell of burnt electrical system wires, and the burnt smell and gasoline odor from engine oil leaking onto the exhaust pipe.
I also encountered the issue of water leakage under the passenger seat while driving before. It was especially noticeable in summer when the air conditioning was on, soaking the floor mats. That time, it was because the condensate drain pipe of the air conditioning system was clogged, causing the drained water to flow back into the car. Fortunately, it was discovered in time. After cleaning the pipes near the filter, the problem was solved. Other possible causes include aging door seals leading to rainwater seepage, or clogged windshield drainage outlets causing water to flow down the interior wall. There could also be coolant leakage, but that usually involves colored liquid. In any case, water leaks should be addressed promptly to prevent carpet mold and metal rust, which can lead to bigger issues. I think developing a habit of checking these components, such as cleaning the exterior drainage channels before the rainy season, can help reduce such incidents.
