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2009 HV module replacement

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Carlos R, Mar 6, 2018.

  1. Carlos R

    Carlos R New Member

    Joined:
    Mar 8, 2017
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    Location:
    Flagstaff
    Vehicle:
    2006 Prius
    Model:
    N/A
    Hey guys I have the whole battery apart and the cells are all reading the same. 7.9 volts

    My car had the red triangle and the code was the P0a80, so I know one of the modules failed.

    The car has 216k miles.

    The only thing I can see is this corrosion looking stuff on the bottom of the batteries, I've attached some pictures.

    What am I doing wrong? IMG_4338.JPG IMG_8449.JPG
     
  2. Mavi

    Mavi Active Member

    Joined:
    Oct 12, 2015
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    Location:
    San Diego,ca
    Vehicle:
    2020 Prius Prime
    Model:
    XLE
    It seems like one of your batteries is either punctured somewhere or expanded too much.. i'd take it apart and see which module has some visible defects.
     
  3. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
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    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    My guess would be the 7th module from the ecu end being the problem. And possibly all the ones around it. But chances are only 1 is leaking. Look for the leaking source.

    If you let the battery sit for a week, the bad module will be easier to find.
     
    SFO likes this.