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"Check Hybrid System" Message Showed Up and is Now Gone

Discussion in 'Gen 3 Prius Main Forum' started by Ghostfreak, Aug 1, 2022.

  1. Ghostfreak

    Ghostfreak Junior Member

    Joined:
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    los angeles
    Vehicle:
    2017 Prius
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    N/A
    Hello,

    I occasionally get a "Check PCS" system that comes and goes and two days ago my "Check Hybrid System" error came up and stayed on for two days. I called a mechanic and they said the hybrid battery likely needs to be replaced but now the errors are gone as if nothing ever happened. Anyone have experience with this?

    Is it normal for the "Check Hybrid System" battery to go on and off?
     
    #1 Ghostfreak, Aug 1, 2022
    Last edited: Aug 1, 2022
  2. JC91006

    JC91006 Senior Member

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    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    Nothing on this car magically goes away, except the catalytic converter when you're parked on the street!

    You should read the codes that are stored in the car, it'll tell you why the warning light came on. It normally would return once the fault is detected again.
     
    #2 JC91006, Aug 1, 2022
    Krall, Foxglove and 2010moneypit? like this.
  3. bisco

    bisco cookie crumbler

    Joined:
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
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    Plug-in Base
    how many miles on her?

    is it hot there?

    check the oil and coolant levels
     
    #3 bisco, Aug 1, 2022
  4. Ghostfreak

    Ghostfreak Junior Member

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    los angeles
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    2017 Prius
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    Good to know the fault will return once detected.

    I'm approaching 250,000 miles. I live in California. Coolant/oil levels seem to be fine. My engine does burn oil but I recently topped it off prior to the error.
     
    #4 Ghostfreak, Aug 2, 2022
    bisco likes this.
  5. Toye A

    Toye A New Member

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    Location:
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    Vehicle:
    2011 Prius
    Model:
    Three
    How many busbars are in gen 3 prius hybrid battery? Is there a busbar attached to the black high voltage cutoff switch?
     
    #5 Toye A, Aug 2, 2022
  6. scedacity

    scedacity New Member

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    Location:
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    Vehicle:
    2010 Prius
    Model:
    III
    There are 26 "straps" on mine. My HV cutoff is orange (on black) and yes it's connected to the bus straps using wire.
     
    #6 scedacity, Aug 20, 2022
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