Water leak...into spare tire area etc

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by johntpr, Apr 7, 2009.

  1. gdanner

    gdanner Member

    Joined:
    Jul 29, 2007
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    Location:
    Central Illinois
    Vehicle:
    2005 Prius
    Model:
    N/A
    Thanks to everyone for this thread.

    Water collecting under my 12V battery and under my spare tire was gradually getting worse. My Prius is a 2005 gen 2 with 107k miles. Until I read this thread I had no idea how all that water was getting into the car. At times the spare tire area looked like a swimming pool!

    After reading this thread I identified the typical cracks where the rear end of the rain gutter channels meet up with the rear hatch area. In my car there were thin cracks on both driver and passenger side which were about two inches in length.

    I got the “flowable silicone sealer” and applied it to the cracks.

    There was a very hard rain the next day. I didn’t find any water inside the car at all afterwards.

    -Greg
     
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  2. Stephen Kunkel

    Stephen Kunkel New Member

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    Apr 18, 2021
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    Location:
    Upper Black Eddy, PA
    Vehicle:
    2005 Prius
    Model:
    II
    I have leak in battery well only. Not real keen on all the effort to try and seal it since it seems to not be huge. I’ve read about pulling the plug, but it is not clear if that is just to drain the water, or if it should be permanently removed. The car is not garage-kept. It’s also maybe going to Ann Arbor soon so maybe face longer stretches of all out cold than it’s used to here in the Delaware Valley. Any advice appreciated.
     
  3. Moses Bruh

    Moses Bruh Member

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    Location:
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    Vehicle:
    2008 Prius
    Model:
    Four
    -im assuming you havent found the exact source location of the leak yet- but I guess you can pull the plug and let it continually drain out, but if your gonna do that why not just remove the paneling around the battery and see if you can find the leak (unless the leak is actually from some hole near the battery well). How I did it: Pull the back seats down and after you remove the fabric paneling to expose the interior metal of car, hose the outside of the car around the battery nice and wet and then go back in from the rear doors and look for the leak. I found my leak coming actually from the tail light mounting holes.
     
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