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My Prius Eco Mode Not Working after couple of thousand Kilometres

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Umair90, Jan 29, 2019.

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  1. Umair90

    Umair90 Junior Member

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    2014 Prius
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    12V health seem fine to me. By the way what’s the best value? I checked mine, i guess 11.something
     
    #21 Umair90, Mar 10, 2019
  2. Umair90

    Umair90 Junior Member

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    I always use 4Litre Engine Oil. Not above that.
     
    #22 Umair90, Mar 10, 2019
  3. Umair90

    Umair90 Junior Member

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    Currently, 12V Battery Health
     

    Attached Files:

    #23 Umair90, Mar 11, 2019
  4. bisco

    bisco cookie crumbler

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    you need a reading after the car has been off overnight, with a voltmeter. what you're seeing there is the inverter voltage.
     
    #24 bisco, Mar 11, 2019
  5. Umair90

    Umair90 Junior Member

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    Let me share few things.
     

    Attached Files:

    #25 Umair90, Mar 11, 2019
  6. bisco

    bisco cookie crumbler

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    Looks good (y)
     
    #26 bisco, Mar 11, 2019
  7. Umair90

    Umair90 Junior Member

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    Noooooo. The Gas range is disturbed after Battery negative terminal reinstalled. And it’s not showing the exact Number of Kilometres now.
     
    #27 Umair90, Mar 11, 2019
  8. bisco

    bisco cookie crumbler

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    It looks like it has just moved one step further with the display button.
    Try cycling through it
     
    #28 bisco, Mar 11, 2019
    Mendel Leisk likes this.
  9. Umair90

    Umair90 Junior Member

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    New codes appeared now.
     
    #29 Umair90, Mar 13, 2019
  10. Umair90

    Umair90 Junior Member

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    Touring
     

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    #30 Umair90, Mar 13, 2019
  11. Mendel Leisk

    Mendel Leisk Senior Member

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    All or most of the codes are apparently about communication loss. Wiring? Connectors? Here's code descriptions:

    B15C1: Open in GPS Antenna:

    1. DCM (Telematics Transceiver)
    2. Wire harness or connector (Telephone and GPS antenna cord)
    3. Telephone and GPS antenna assembly

    U0073: Control Module Communication Bus OFF: CAN communication system

    U0100-211, 530 Lost Communication with ECM/PCM "A"

    The trouble shooting instruction in the Repair Manual are very complicated. If you want I can send you link. Techstream loaded on a laptop is mandatory I think.

    A first step you might do, is just look under the dash, say for botched wiring work, someone installing something incorrectly. Or rodent damage. Or corrosion on connectors.
     
    #31 Mendel Leisk, Mar 13, 2019
    Last edited: Mar 13, 2019
    Umair90 and bisco like this.
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