Mystery water intrusion

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jackson044444, May 23, 2026 at 4:49 PM.

  1. Jackson044444

    Jackson044444 New Member

    Joined:
    Apr 18, 2026
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    Location:
    Maine
    Vehicle:
    2007 Prius
    Model:
    Base
    Hello all. I’ve been battling a leak issue in the rear right side passenger floor well. It rained recently and when I checked under the carpet, the rag I had laid down under the carpet was soaked enough I had to wring it out. All the obvious places have been gone over and sealed up. The weather stripping looks ok as well. The only thing I can think of is that water is getting in from underside? I haven’t been to car wash recently or anything. I’m really getting to the end of my rope, I love my Prius so I’m really desperate to fix this. I’ve even soaked the car with a hose and checked for leaks and the area that was previously wet was still dry. Any help would be really appreciated. My next course of action is to take to my mechanic but I have doubts they will be able to figure it out. Thank you!
     
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    So you're talking about in the back seat on the right where the passenger sitting in the seat feet would be ?? ??? If you look underneath the car you'll see a big round hole where a rubber plug should be installed with the carpet pulled back from up top . If you don't see that rubber plug then you're looking at the back side of your carpet not goidchor puddles