Hybrid Battery Fail...?!?

Discussion in 'Gen 3 Prius Main Forum' started by worldaven, Dec 2, 2024.

  1. ASRDogman

    ASRDogman Senior Member

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    Oh, okay. Well he gets them often. So put your name on the list, AFTER dealing
    with the 12v battery....

     
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  2. worldaven

    worldaven Member

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    UPDATE:
    First, thanks to all of you who replied to my post earlier this week. Based on your recommendation (especially ASRDogman), I bought a new 12V battery and replaced it this morning.

    The Good News is once I did that all the warning lights on my dash disappeared!! I also purchased an OBDII scanner and downloaded and paid for the Dr. Prius app.

    The Bad News: Once I ran all the diagnostics and tests I saw on the app. Here are the results. As you can see apparently #6 cell block is bad. The P0A80 code is still on there, even after I cleared it a couple of times from the app...? And finally, the life expectancy test shows I have 2.34% battery life left....?1?!

    Now, I don't know how good or accurate these tests are. If you have more experience with these tests and can confirm, refute, or interpret these results better, please let me know. If these tests are indeed accurate then I will really need to figure out if I will replace the HB pack or just trade it in. TIA.

    Here are screenshots of the tests
     
  3. mjoo

    mjoo Senior Member

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    The Dr. Prius diagnostics appear accurate. Block #6 Looks like it has a bad cell (-1.5V). A blade most likely needs to be replaced. This means removing the pack completely since all blades are bolted at the bottom of the pack and compressed with a pair of brackets. Afraid you can't get a more definitive diagnosis without opening the pack and using some electronic tools.

    SM-A536V ?
     
  4. worldaven

    worldaven Member

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    Is the 2.34% life of the battery also accurate? The rest of the cells look ok? How long will 2.34% buy me in terms of mileage? What is the likelihood the P0A80 code show up again?
     
  5. Brian1954

    Brian1954 Senior Member

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    100% chance.

    You had the P0A80 code in a thread that you created a year ago. https://priuschat.com/index.php?posts/3401279
    You have been living on borrowed time with the HV battery since then. Your time is now up. The HV battery needs to be replaced right away.
     
    #25 Brian1954, Dec 7, 2024
    Last edited: Dec 7, 2024
  6. mjoo

    mjoo Senior Member

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    No idea. You weren't able to complete the test due to the temperature. It's likely your pack has failed or will fail soon.

    SM-A536V ?
     
  7. ASRDogman

    ASRDogman Senior Member

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    Did you charge the 12v Battery??? You can put a charger on it in the
    fuse box in the engine bay.

    Does the engine start? Is it drivable? Maybe drive it for a while and keep the engine running so it
    will charge it up. After you clear the codes. When you first start it, don't drive it. Let the engine
    come on and charge the battery for a bit. Wait until the engine turns off, then drive it.
    That's why I had to do with mine before replacing it.

    You could also remove the battery cover so you can get to the blocks. Remove the bus bars
    and see if any are dirty. Then clean them up, and the wires too, they are fragile, so be careful.

    You do have a few options. If you decide to replace it, Sodium is the way to go.
    Did you put your name on the list? Email list?

    You can also try the Prolong system. That might help make the battery last a while longer.
    It will depend on how back yours is.

    You can also try ebay. There are a few places selling so called JDM batteries. Hard to tell just
    how good they are though. Anytime you buy used, it's a guessing game. If you have to buy used,
    that's probably your best bet.


     
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  8. ASRDogman

    ASRDogman Senior Member

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    Someone stated that you have been having issues with the hybrid battery?
    Would have been nice if you had put that in this section. That sure changes things.

    Just order the Sodium Hybrid Battery, get on the list. And try to drive your Prius the
    best you can until it comes in. Order new bus bars, it will make the job go so much quicker.
    Ask Jack where to get them. There is a place in Texas...
     
    #28 ASRDogman, Dec 7, 2024
    Last edited: Dec 7, 2024
  9. worldaven

    worldaven Member

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    Ok. It's becoming more clear that hybrid battery replacement is in the car's future. The question now is do I have it replaced myself or get rid of the car sell/donate and have someone else replace it. The car's KBB value private sale, if everything worked properly is $5600. If I sell it for $2K, someone else can deal with the new battery replacement and future blown head gasket and then enjoy the car many more miles to come. Don't know much about donating it to a charity. Will have to research that.
     
  10. worldaven

    worldaven Member

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  11. ASRDogman

    ASRDogman Senior Member

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    You NEED to read over the posts...... o_O You can replace the hybrid battery yourself.
    A lot of steps, but nothing hard. Except pulling the battery assembly out of the car. Unless
    you're strong, you'll need help. But even so, it's easier if you have someone to help you.

    You won't get $5600 if the hybrid battery needs replacing. If you were close to me I'd give you $2000 for it.
     
  12. ASRDogman

    ASRDogman Senior Member

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  13. Paul E. Highway

    Paul E. Highway Active Member

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  14. ASRDogman

    ASRDogman Senior Member

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    He lowered his price. I was going to get that pack. But the cost was high, and reading his
    warranty, at the time, it seemed like he said you get nothing if it doesn't work. There were so
    many stipulation on the warranty, and it seem like he was angry. I guess people had screwed
    him over, and he was venting.
    And Jack's lithium battery was about $400 less. I am SOOOOO glad I got the lithium pack.
    Well worth it! And even happier with the Sodium Battery!
     
  15. rjparker

    rjparker Tu Humilde Sirviente

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    You get an irs deduction for the car that is financially worth the market value times your tax bracket. Most place the market value at the high end.

    Not everybody wants to tear into a high voltage battery in a desperate attempt to keep arguably the worse year of the worst Prius alive long enough that they are on the hook when the head gasket blows costing $2500-$7500.

    If you have enough taxable income to benefit from the tax deduction donating your car would provide, bail now.

    If you can't find an oem hv battery installed for $2500, bail. They do exist.

    If you are struggling financially, buy the Greentec used battery IF the guarantee and frequent use of it is ok by you.
     
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  16. Grit

    Grit Senior Member

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    $1.25 for 56.5 miles.