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Motor won't shut off

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Pruis4842, Jul 26, 2018.

  1. Pruis4842

    Pruis4842 New Member

    Joined:
    Jul 26, 2018
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    Location:
    Modesto CA
    Vehicle:
    2010 Prius
    Model:
    Four
    OMG! Does anyone know what it means when the motor keeps running? At stop lights, drive thrus etc. 2010 Prius 4 with 253k miles.. Just bought it and it usually drives like it's brand new. The charge bars fills up fairly quickly and stays up. Will only drop if I'm cruising through a parking lot or two looking for parking. Motor only acts up every few days and stays running until I manually shut her off.

    Thank you
     
    #1 Pruis4842, Jul 26, 2018
  2. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
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    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    too much ac usage
     
    #2 tankyuong, Jul 27, 2018
  3. FuelMiser

    FuelMiser Senior Member

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    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    When the traction battery is full coming to a stop, the computer will use the excess charge in the battery to "spin" the gas motor to prevent over-charging. It does not burn any gas, it's just spinning the gas motor to use up excess battery charge. Rapidly filling up and depleting the traction battery is an indication of degraded traction battery capacity, and you are at the point where a traction battery recondition/replacement is warranted.
     
    #3 FuelMiser, Jul 27, 2018
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    weak battery cell(s)
     
    #4 bisco, Jul 27, 2018
  5. working1

    working1 Active Member

    Joined:
    Apr 1, 2013
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    Vehicle:
    2012 Prius
    Model:
    Two
    check the 12V battery. a bad one will keep the ICE running and not show any codes.
     
    #5 working1, Jul 27, 2018
    Grit likes this.
  6. fuzzy1

    fuzzy1 Senior Member

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    Feb 26, 2009
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    Location:
    Western Washington
    Vehicle:
    Other Hybrid
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    Make sure that the car is not in 'B' gear when it should be in 'D'.
     
    #6 fuzzy1, Jul 27, 2018
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