What is the reason for water leakage under the driver's seat in the Envision?

[Aniyah]

The reason for water leakage under the driver's seat in the Envision is a clogged drainage pipe. Below are detailed explanations and solutions: Clogged drainage pipe: Check if the sunroof drainage pipe is clogged. Fully open the sunroof, and you will see a groove. Slowly pour water into the groove, i.e., the sunroof drainage pipe, to see if the water drains or gets blocked. The outlet of this drainage pipe should be located on the A-pillar and C-pillar of the car. Solution: Replace the drainage pipe with a new one. Clogged drainage holes: Carefully inspect the door drainage pipes. Similarly, open the door and check the small holes at the bottom of the door, which are the drainage holes, to see if they are clogged. Solution: Promptly clean the drainage holes inside the car.