Why is the aircon dripping water into the car? (Yaris 2007)

Hello, it sounds as if the evaporator box has a clogged drain. There is a drain that allows water that naturally collects inside the evaporator box to drain outside the vehicle underneath it. If this drain becomes clogged, the water has nowhere else to go other than inside the vehicle.

https://www.youtube.com/watch?v=AmeQiOrHFug https://www.youtube.com/watch?v=9V74Sd2eeXw https://www.youtube.com/watch?v=2i1kfGnPY6E