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2009 HV module replacement

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

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  1. Carlos R

    Carlos R New Member

    Joined:
    Mar 8, 2017
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    Location:
    Flagstaff
    Vehicle:
    2006 Prius
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    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
     
    #1 Carlos R, Mar 6, 2018
  2. Mavi

    Mavi Active Member

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    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.
     
    #2 Mavi, Mar 6, 2018
  3. JC91006

    JC91006 Senior Member

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    Los Angeles, CA
    Vehicle:
    2008 Prius
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    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.
     
    #3 JC91006, Mar 6, 2018
    SFO likes this.
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