New member, (just registered) after i searched online for this problem. I just came inside from going to get something out of the back passenger seat of my 2016 jeep Cherokee. I picked up something in the floorboard and noticed it was wet. I felt the floorboard and it was soaked, to the point that water is squishing when i press down on it. I am the only passenger in this vehicle, nothing has ever been spilled in it, and the Windows are always up when it's parked regardless of season. I did notice last fall/winter that i was having a lot of issues with condensation building up inside all the Windows. I even took a video of it for proof. This spring i turn on the AC and it smells musty. I'm so torn up about this.