Common source of leak for water in 12v battery well?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by wlai, Feb 17, 2021.

  1. wlai

    wlai Junior Member

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    I just found small amount of water in the two compartments behind the rear wheel wells, the area in which the 12V battery sits on the passenger side. The bottom / floor is not rusted and is in tact, so it's not sprays from below, but some kind of small leakage.

    Based on the group's collective experience, are there particular vulnerable spots near those areas that I should check first, to see if they are the source of the leak?
     
  2. SFO

    SFO Senior Member

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  3. mr_guy_mann

    mr_guy_mann Active Member

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    SFO's linked post is one of the most common problems on the Gen2 for water leaks. The sealer cracks and water penetrates the seams. Silicone RTV can fix it short term but a proper automotive seam sealer (like 3M "fast" 'n firm") will provide a much more durable repair. You can also have leaks at the tail light gaskets or the mounting holes for the tail gate external trim panels. Searching the forum will turn up all the details.

    Posted via the PriusChat mobile app.
     
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