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It shows no signs of life

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Dbd1964, Nov 21, 2019.

  1. Dbd1964

    Dbd1964 New Member

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    My daughter’s 2010 Prius shows no signs of life. Initially my wife had left the headlights on for a long time and drained the battery. We took it to the shop my daughter bought it from and they gave us a temp replacement, they test and checked the the battery and recharged it. Said it was fine.

    So with a full charged temp loaner battery - No lights, key fobs not working, car won’t start unless I have jumper cables on it.Then all the initial things that light up, operate without starting the car are working and the car starts fine but as soon as I take off the jumpers it dies.

    If this were any car but an electric I would think I had a dead battery and bad alternator. But the battery is known good. Tried two of them


    Any help would be greatly appreciated. Seems like a fuse is blown right near the battery’s output feed but I have no idea where that would be or what it would look like. I changed the battery twice so I do know where the battery is. :

    Thanks

    Dan
     
    #1 Dbd1964, Nov 21, 2019
  2. schja01

    schja01 One of very few in Chicagoland

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    Bad cable or clamp or connection at far end of the battery cable(s)?
     
    #2 schja01, Nov 21, 2019
    jerrymildred likes this.
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Trust but verify.
     
    #3 Mendel Leisk, Nov 21, 2019
    Raytheeagle likes this.
  4. bisco

    bisco cookie crumbler

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    welcome!
    if the jumpers are on the battery posts, i can only think the 12v is so defective, it is somehow interrupting the inverter flow.
    if the jumpers are on the jump point, the problem is somewhere in the back. battery/fuse/connections

    but are we missing a piece of the puzzle? they installed a 12v loaner and it started and ran fine?

    you drove home fine? the next time it was dead? or it worked for several hours/days/weeks?
     
    #4 bisco, Nov 21, 2019
    Mendel Leisk likes this.
  5. tankyuong

    tankyuong Senior Member

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    Parasitic drain
     
    #5 tankyuong, Nov 21, 2019
  6. bisco

    bisco cookie crumbler

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    dang parasites!:mad:
     
    #6 bisco, Nov 21, 2019
  7. Grit

    Grit Senior Member

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    Tighten battery terminals and the ground cable from battery to car chassis.
     
    #7 Grit, Nov 21, 2019
  8. Dbd1964

    Dbd1964 New Member

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    No. Drove a different car for the battery loaner. The loaner was fully charged but did not start the car. No lights came on, nothing

    Thanks
    Da
     
    #8 Dbd1964, Dec 2, 2019
  9. Dbd1964

    Dbd1964 New Member

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    No we drove a different car to pick up the loaner. The loaner battery didn’t start the car. Not a single light came on. It’s like the battery wasn’t even vonnected
     
    #9 Dbd1964, Dec 2, 2019
  10. bisco

    bisco cookie crumbler

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    pur a meter on it
     
    #10 bisco, Dec 2, 2019
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