New 12v battery? "Check Hybrid System"

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Dan0, May 1, 2017.

  1. NavyLCDR

    NavyLCDR Active Member

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    The Bosch battery is still on sale at Pep Boys for $143, free installation, but also very easy to do yourself.
     
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  2. Dan0

    Dan0 Junior Member

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    A lot of good information here! Thanks everyone!
     
  3. xliderider

    xliderider Senior Member

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    If you mean the jump terminal in the fuse box and a ground point in the engine bay, yes. Not the battery terminals, cables in the back.
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    To save memories when swapping batteries: I lay my jump pack in the driver's foot well, and run a memory saver cable from it to the OBDII port:

    upload_2017-5-5_7-0-40.png

    Works a charm, but a little late in the day for something like that I guess. If you've got something like a small trickle charger, hooking it up at the underhood jump point will do the trick too.

    Still, this all seems like rearranging deck chairs on the Titanic: it's very likely the inverter is toast? If you're getting that replaced, I would just get them to do the 12 volt battery replacement at the same time. They're likely going to need the car to be completely dead (12 volt disconnected, no memory saver), in the course of inverter swap.

    BTW, you say the 12 volt battery's reading "12 volt". Is this with a digital meter? Can you post to the reading to one decimal place, ie: 12.4, 12.6, 12.8?
     
  5. Dan0

    Dan0 Junior Member

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    So we put it on a flatbed and took it to the dealer. They replaced the inverter... it was covered under the Enhanced Warranty Toyota sent us out of the blue about 9 months ago.
    Seems fine but a couple of times now my wife could not start the car at first. No codes... the power locks didn't work either...
    Today I replaced the 12v battery... just to be safe. Is it possible to have intermittent problems with the 12 .
     
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  6. xliderider

    xliderider Senior Member

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    If your key fob batteries are 2 years old or more, change the batteries in both fobs. CR1632 large button cells, see if you can find a 2-pack, it's cheaper than buying 2 individually.
     
  7. xliderider

    xliderider Senior Member

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    FYI, if it is weak or dead key fob batteries, you can still get in the car with the mechanical key in the key fob. Then hold your fob up against the Start button after stepping on the brake pedal and press Start when the LED turns green.
     
  8. Troels

    Troels Junior Member

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    How do you botch a jumpstart? I have done a couple of those recently and just got POA7A and POA94 today along with max 40mhp speed
    and Christmas tree dashboard. 2010 Gen3.
     
  9. bisco

    bisco cookie crumbler

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    cross pollenize the pos and neg
     
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