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Battery Problems - But no dead cells

Discussion in 'Newbie Forum' started by Tony Lucas, Aug 1, 2016.

  1. Tony Lucas

    Tony Lucas Junior Member

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    I have a 2004 Prius with 130,000 miles. I have the following error codes: C1259, C1310, P3019. I've taken the battery out and tested each cell has a voltage of 8.00 to 8.05 volts - higher than I've ever seen before. I'm seeing the classic symptoms of a dead cell - read triangle, VSC error. When I'm driving, the battery seems to isolate, and the engine works very hard to move the car at all, but I will have 4-5 bars on my battery display. From what I've read, this all points to a dead module. Could it be a bad connection to one of the modules? Or a failing control computer module? How would you clean the connections to the battery?
     
    #1 Tony Lucas, Aug 1, 2016
  2. Tbkilb01

    Tbkilb01 Active Member

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    Heard one fellow found corrosion on connects...solved his problems and didnt replace any modules. Think I saw it on Youtube.
     
    #2 Tbkilb01, Aug 1, 2016
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  3. wjtracy

    wjtracy Senior Member

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    also clean your battery fan for gunk as that can contribute to throwing a code if clogged up. Also note the brake actuator problem can throw some lights but that should include some of the brake related lights maybe VSC. Extended warranty on that if you have it..see threads.
     
    #3 wjtracy, Aug 1, 2016
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  4. bisco

    bisco cookie crumbler

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    you need mini vci and load test.
     
    #4 bisco, Aug 1, 2016
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  5. Tony Lucas

    Tony Lucas Junior Member

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    How does the mini vci work? What will it say?
     
    #5 Tony Lucas, Aug 1, 2016
  6. Tony Lucas

    Tony Lucas Junior Member

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    I looked on you tube and couldn't find that video
     
    #6 Tony Lucas, Aug 1, 2016
  7. bisco

    bisco cookie crumbler

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    it is an obd connector between your windows laptop and the car. it contains toyota tech stream software and can read the voltages while you drive. another method is to put light bulbs on the cells to load them.
     
    #7 bisco, Aug 1, 2016
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  8. Tony Lucas

    Tony Lucas Junior Member

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    Do, I want to load then to find out which one us dead?
     
    #8 Tony Lucas, Aug 1, 2016
  9. bisco

    bisco cookie crumbler

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    yes, the load identifies the bad cell. if you want some learning, there are quite a few threads here on diagnosing and repairing hybrid batteries.
     
    #9 bisco, Aug 1, 2016
  10. Tbkilb01

    Tbkilb01 Active Member

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    Okay then...My mistake. I just googled "corrosion on hybrid battery" and several sites pop up on it.
     
    #10 Tbkilb01, Aug 1, 2016
  11. Tony Lucas

    Tony Lucas Junior Member

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    I can't find a good forum that talks about how to used a load test (battery) to determine the dead battery. I've cleaned all my copper terminals on the bus bar - so I think I'm in good shape there, but I would like to determine the bad cell before I put it back together.
     
    #11 Tony Lucas, Aug 2, 2016
  12. bisco

    bisco cookie crumbler

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    let me see what i can help guide you.

    1) go to the forums page

    2)go to gen 2 forums

    3) go to tech discussion

    4) look for hybrid battery threads. the first good one i see is by member 'ryousideways' gen II prius individual battery module replacement.
     
    #12 bisco, Aug 2, 2016
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  13. fotomoto

    fotomoto Senior Member

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    The common method is to hookup a standard car highbeam headlight bulb to each individual module for two minutes; noting both beginning and ending voltage. Not exactly a how-to but this is what I did: My P0A080 fault code and battery rebuild | PriusChat
     
    #13 fotomoto, Aug 2, 2016
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  14. Tony Lucas

    Tony Lucas Junior Member

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    How do you start a new post/ thread? I can't remember how to do it.
     
    #14 Tony Lucas, Aug 2, 2016
  15. bisco

    bisco cookie crumbler

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    go to the desired sub forum and click 'post new thread' near the top right.
     
    #15 bisco, Aug 2, 2016
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  16. Tony Lucas

    Tony Lucas Junior Member

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    I cleaned the copper terminals using vinagar/ salt solution for a couple of hours and then neutralized with baking soda/ water. I went ahead and put the battery back in - so far so good. I also purchased the mini-VCI so I can read the voltages coming out of the batter - waiting for that to arrive.
    Has anyone had experience with a Prolong Battery System after they have had the Red Triangle of Death - and then replaced a cell or two?
     
    #16 Tony Lucas, Aug 3, 2016
  17. Tbkilb01

    Tbkilb01 Active Member

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    There is a guy on youtube...points out that corrosion builds on negative teminals...but either way seems that was a problem for one guy-resistance from corrosion set off his computer...dealer wanted to replace his hybrid batt but he opened it up hisself and saw the corrosion. Says he was good after a simple cleaning?
     
    #17 Tbkilb01, Aug 5, 2016
  18. Nick Loh

    Nick Loh New Member

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    Hi. I have a Prius that display in Japanese. Can anyone help to translate the error message please?
     

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    #18 Nick Loh, Aug 8, 2016
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