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Prius SOC CCL issue (after long downhill)

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by CloudJ, Oct 7, 2018.

  1. CloudJ

    CloudJ New Member

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    I'm Taiwanese not will in English

    I found some special condition, SOC will less then 40%
    but CCL still 0, then Car can't charge, accelerate very weak.
    If car at ramp, it will Sliding
     
  2. Wolfie52

    Wolfie52 Senior "Jr" Member

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    Wrong forum; this is for Prius Prime---plug in models. 错误的论坛; 这是为Prius Prime ---插入型号。
     
  3. FuelMiser

    FuelMiser Senior Member

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    The way to get the moderator's attention in matters of this is to use the Report button in the original post. Otherwise, they will not see it
     
  4. CloudJ

    CloudJ New Member

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    Issue video


    I'm Taiwanese not well in English, so maybe have some word or sentence wrong.

    At some special situation, battery capacity will low then 35% (1 unit at center meter), but CCL(Charge Current Limit) less then 0 kW, so computer not allowed battery charge. after battery capacity low then 25% DCL(Discharge Current Limit) still have 7kW, but in fact system not allowed battery output, at 01:58 We can see abnormal vibration when start up. At 02:22 I restart power, but system CCL still less then 0kW
    If car at ramp, it will sliding.
     

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  5. bisco

    bisco cookie crumbler

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    how many miles/km on her? is there a recall on the inverter?
     
  6. CloudJ

    CloudJ New Member

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    You mean ODO? about 45000KM
    I guess it about ECU
     
  7. alanclarkeau

    alanclarkeau Senior Member

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    Is this a PRIUS PRIME?
     
  8. CloudJ

    CloudJ New Member

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    No it's Prius4
     
  9. CloudJ

    CloudJ New Member

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    Can see the Hybrid Assistant display accelerator pedal oven then 80% but car still not go, and the engine speed up a little, but go down quickly, my car sliding at ramp.

    And I can reappear this issue at 2016 Prius 4 on different car by same step, I feel this is a big problem for safety, now I know this issue same as this link
    TSB (NiMH only): Reduced power when accelerating from a stop | PriusChat

    after I replace HV ECU, power issue have improve but the low battery and low CCL not allow charge issue still exist.
     
    YellowRainbow likes this.
  10. bisco

    bisco cookie crumbler

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    this is a huge gen 4 problem
     
  11. Zardoz

    Zardoz Member

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    So... what is the fix?
     
  12. YellowRainbow

    YellowRainbow New Member

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    CloudJ, would you explain the steps to reproduce this issue? Just want to test on my Prius 4.

    I am from South Korea and I have heard from a few people that their Prius 4 didn't accelerate after a long downhill with 100% battery charged.
     
    Diego Sausen likes this.