What is the situation when there is water under the driver's seat?

[Johnny]

The reasons for water under the driver's seat are as follows: 1. Sunroof leakage due to poor sealing, check the sunroof. 2. Water from car washing that was not cleaned properly. 3. Corrosion and leakage of the interior heater core. Extended content handling methods: 1. Go to a car cleaning shop, remove the floor mats, and use a vacuum cleaner to remove most of the water. 2. Whether it's loop mats, leather mats, rubber mats, or full TPE mats, use dry towels alternately under the mats to absorb water until they are clean. Otherwise, they may smell or mold, affecting driving. 3. Use high-pressure air at a repair shop to blow through the pipes to clear them.