Starting the ICE with bad hybrid batteries

Discussion in 'Gen 2 Prius Main Forum' started by DWJM2513, Apr 26, 2020.

  1. DWJM2513

    DWJM2513 Junior Member

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    My 2005 Prius has been parked for the last 6 months due to bad hybrid batteries. Ive got a brand new 12v battery in it but cannot start the engine to get everything flowing in there. Is there something I can do to get that engine fired up and run it for 20 or so minutes with 2 dead cells in my hybrid batteries?
     
  2. sam spade 2

    sam spade 2 Senior Member

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    Probably NOT......since the 12 V battery only "enables" the vehicle to start.
    It is the HV hybrid battery that actually turns the engine over to start it.
     
  3. bisco

    bisco cookie crumbler

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    no, you'll have to repair the battery first. is the car making ready? are you getting the red triangle? the engine is the last thing to worry about.
     
  4. SFO

    SFO Senior Member

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    After six months, why the need to turn over the engine at this point?

    Not sure what level of DIY you would be willing to consider, but you could buy a used HV charger and top up the battery. Though even after charging, that failed HV battery might not have enough voltage to turn over or start the ICE.
     
    #4 SFO, Apr 26, 2020
    Last edited: Apr 26, 2020
  5. DWJM2513

    DWJM2513 Junior Member

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    Getting the red triangle, abs, VSC, check engine and a few codes. i think P0A80 and P3013 are the active codes. The ready light was coming up last time i got into it

    Do you have any leads to where i can buy one for a decent price? I dont have a whole lot of time or money to be throwing at the prius right now. Also just to keep things charged up and moving but I supposed I let it go too long
     
    #5 DWJM2513, Apr 26, 2020
    Last edited by a moderator: Apr 26, 2020
  6. bisco

    bisco cookie crumbler

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    probably better off to get dr.prius, and just replace the bad cells for now
     
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  7. SFO

    SFO Senior Member

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    You might find this posting of interest then.
     
  8. PriusCamper

    PriusCamper Senior Member

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    Let us know what part of the US you're in and we can point you to someone to help you or loan you equipment to get the battery going again.
     
  9. DWJM2513

    DWJM2513 Junior Member

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    That would be awesome! I live near Ohio University in Athens, Ohio if anyone is around here. It's like Priusville around here
     
  10. sam spade 2

    sam spade 2 Senior Member

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    What equipment do you think will "fix" cells that are "dead" ??
     
  11. DWJM2513

    DWJM2513 Junior Member

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    This is what I'm calling dead cells Screenshot_20191130-163412_Dr%20Prius.jpg
     
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  12. bisco

    bisco cookie crumbler

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    you would replace the bad cells and rebalance
     
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  13. sam spade 2

    sam spade 2 Senior Member

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    I agree they look pretty dead.
    AND once in that condition, they typically can NOT be recovered.
     
  14. SFO

    SFO Senior Member

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    It looks like you might have 2-4 bad modules, a quick module swap and a top balance could get you into 'ready' mode again.
     
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