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Exploded Modules...Please check this out

Discussion in 'Gen 2 Prius Technical Discussion' started by dirt657, Mar 26, 2019.

  1. dirt657

    dirt657 Member

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    Just had a buddy bring me his Prius with 170k miles on it. I opened it up and this is what I see. Any explanation on why this might have happened and any further info I should know before proceeding? Thanks
     
    #1 dirt657, Mar 26, 2019
  2. maddog2020

    maddog2020 Junior Member

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    Did you forget to attach some photos?


    iPhone ?
     
    #2 maddog2020, Mar 26, 2019
  3. dirt657

    dirt657 Member

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    My bad. Here they are
     

    Attached Files:

    #3 dirt657, Mar 26, 2019
  4. RobH

    RobH Senior Member

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    Looks like he drove it until it wouldn't move anymore. Ask him how long the warning light has been ON.

    The intake vent and/or fan for the battery may be clogged with dog hair or whatever.
     
    #4 RobH, Mar 26, 2019
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  5. padroo

    padroo Senior Member

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    Could have caught fire.
     
    #5 padroo, Mar 26, 2019
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  6. bisco

    bisco cookie crumbler

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    wow!:eek:

    isn't that usually caused by overcharging?
     
    #6 bisco, Mar 26, 2019
  7. TMR-JWAP

    TMR-JWAP Senior Member

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    Yah,


    over charging
    pressure relief failed to open
    top cap failed where it is heat sealed to lower portion, mainly because it's the only portion of the modules that is not reinforced either by another module next to it or the bottom steel tray.

    at least it was only one (with a blown top) and not several at once which could have snapped the clamp plates off the rods.
    As mentioned by RobH, happens more often on a battery that has already provided a warning that it was in failure mode, but owner continues driving or resets warning and continues driving.
     
    #7 TMR-JWAP, Mar 26, 2019
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  8. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    I have only seen this on vehicles that have been driven after the idiot lights have illuminated. My guess is this is it. It was driven a long time by just continuously resetting the codes.
     
    #8 2k1Toaster, Mar 26, 2019
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  9. dirt657

    dirt657 Member

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    2 of them had the top blown off...a few of these cells have very low capacity. There’s electrolyte all over the case. Probably gonna go with this one is fubar’d.
     
    #9 dirt657, Mar 29, 2019
  10. jerrymildred

    jerrymildred Senior Member

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    I wonder if that picture or this thread should be in a sticky that we can reference when people ask if it's OK to keep driving when the traction battery is throwing codes.
     
    #10 jerrymildred, Mar 29, 2019
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  11. GasperG

    GasperG Senior Member

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    At least you know which modules are bad :D
     
    #11 GasperG, Mar 29, 2019
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