What Causes Water Leakage Under the Car's Front Passenger Seat?

[MacIsaac]

Water leakage under the car's front passenger seat is mostly caused by door leaks. If the window regulator has been replaced, it may be due to improper adhesion of the door waterproof membrane after the regulator replacement, leading to leakage. Below is an introduction to the methods for handling water leakage: 1. Treatment Methods: Initially, a clogged sunroof drain hole will be at the entrance of the drain hole, which can be seen by opening the sunroof and cleaned by oneself. Over time, the clog may move into the drainage hose, making it difficult to clear. In such cases, it is necessary to visit a 4S shop for professional clearance by a technician. 2. Special Cases: When closing the door or while driving, a noticeable sound of water can be heard, indicating water accumulation inside the door. In this situation, use thin iron wire or a small screwdriver to clear the drain hole.