What Causes Water Under the Driver's Floor Mat?
2 Answers
Water leakage under the floor mat in the driver's compartment may be caused by a leaking sunroof or damaged vehicle seals, leading to water ingress during car washing or rainy weather. It is advisable to visit a repair shop for inspection and repair. Below is relevant information on handling car water leakage: 1. Handling Method: Initially, a clogged sunroof drain hole is usually at the drain entrance, which can be seen by opening the sunroof and cleaned by oneself. Over time, debris may enter the drainage hose, making it difficult to clear. In such cases, it is necessary to visit a 4S shop for professional cleaning by a technician. 2. Special Circumstances: If you hear noticeable water sounds when closing the door or while driving, this indicates water accumulation inside the door. In this situation, use thin iron wire or a small screwdriver to unclog the drain hole.
Recently, my car had the same issue, and it turned out to be a clogged sunroof drainage hole. It's located at the edge of the roof, and dust or leaves can block it, causing rainwater to flow down the A-pillar and under the floor mats. Using an air gun to clear it usually solves the problem. Another possible cause is a disconnected or clogged AC drain pipe. This thin pipe runs from the passenger side to the underside of the car, draining condensation when the AC is on in summer. If it's blocked, water can back up into the cabin. Leaky door seals are also common, especially in older cars where water can seep in more easily. I recommend taking out the floor mats to dry them first, then checking these points to prevent mold. If you can't handle it yourself, it's best to have a professional inspect it at a shop.
