Why Is There Water Under the Car Seat?
2 Answers
Here are the reasons for water under the car seat: 1. Not closing the windows tightly on rainy days: After getting out of the car, failing to ensure that the windows are tightly closed may allow rainwater to seep into various parts of the car through the gaps. Over time, water may drip under the driver's compartment. 2. Issues with drainage outlets: After ruling out human factors, if water still drips under the driver's compartment, the car's drainage outlets should be checked. There are four drainage outlets in a car—the front two are for sunroof drainage, and the rear two are for draining water flowing on the car.
I was quite worried when I noticed water under the seat. This could be caused by clogged sunroof drain tubes or aging door seals leaking. When it rains, the water that doesn't drain properly seeps into the cabin floor, especially in older vehicles. Another common cause is issues with the AC system - condensation from the AC can backflow and accumulate under the seats. If not addressed promptly, the water can soak the carpets and even corrode wiring harnesses. Long-term moisture buildup leads to mold growth and unpleasant odors, which affect health. I recommend first using towels to absorb the moisture and air out the interior, then checking if the sunroof corner drains or door seams are blocked. Avoid parking under trees regularly to prevent leaf clogs, and periodic cleaning of these areas can effectively prevent leaks.
