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Car Issues - 2012 Toyota Prius

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by John Raville, Mar 31, 2024.

  1. John Raville

    John Raville New Member

    Joined:
    Mar 31, 2024
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    Location:
    Atlanta, GA
    Vehicle:
    2012 Prius
    Model:
    ----USA----
    my e-brake, slip indicator, and ABS light wont turn off on my prius. And if the video attachment is working, there is a weird repeating humming noise from what sounds like my hybrid battery that stops once i get over around 40mph. ive had battery and diagnostics run and have all came back clean. the braking has felt slightly off but not sure if that is me overthinking. any advice on what the issue could be? for context, i was rear ended about a month ago and my bumper was replaced at a Toyota collisions center. thanks in advance!
     
    #1 John Raville, Mar 31, 2024
  2. bisco

    bisco cookie crumbler

    Joined:
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    is the e brake dragging?

    who ran the diags?
     
    #2 bisco, Mar 31, 2024
  3. Brian1954

    Brian1954 Senior Member

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    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    If the warning lights are on, you have trouble codes that should be read with a Prius capable scanner. Get the trouble codes read and then come back and post what they are. You will then receive some help for the codes that you have.
     
    #3 Brian1954, Apr 1, 2024
  4. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Do you have anything constantly plugged into OBD port? That caused sim issues for me, till I ceased.
     
    #4 Mendel Leisk, Apr 1, 2024
    bisco likes this.
  5. John Raville

    John Raville New Member

    Joined:
    Mar 31, 2024
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    Location:
    Atlanta, GA
    Vehicle:
    2012 Prius
    Model:
    ----USA----
    Hey guys i appreciate the responses. I do not, unfortunately i took it to the dealer and it is the R& R brake booster assembly with master cylinder. originally quoted at $5K fix for a car i spent $13K for. Apparently that part has a warranty but is expired, going to do my best to see about getting a goodwill warranty but not holding my breathe. Unfortunately, I also bought this car used at a Nissan dealership, not the Toyota one. Any and all advice would be greatly appreciated.
     
    #5 John Raville, Apr 1, 2024
  6. Grit

    Grit Senior Member

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    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    Self suicide?
     
    #6 Grit, Apr 2, 2024
    Paladain55 and Mendel Leisk like this.
  7. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Is there any other kind?
     
    #7 Mendel Leisk, Apr 2, 2024
  8. Paladain55

    Paladain55 Active Member

    Joined:
    Oct 20, 2021
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    Location:
    The South
    Vehicle:
    2010 Prius
    Model:
    Two
    Gonna have to revert to the good ole days of driving with non assisted brakes and no abs/tcs.
     
    #8 Paladain55, Apr 9, 2024
  9. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
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    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Shop around for an independent with Prius experience. The parts might be $600-$1000. It is several hours of work to install and another hour to calibrate and bleed.

    Get part from online Toyota dealer, some may be in your area. Validate with their online vin check. Find the mechanic shop first.

    IMG_4712.jpeg
     
    #9 rjparker, Apr 9, 2024
  10. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    And no rears. And no regen.

    The Prius brake actuator is really not much like some extra ABS thing bolted on to a working brake system.
     
    #10 ChapmanF, Apr 9, 2024
  11. Mr.Vanvandenburg

    Mr.Vanvandenburg Senior Member

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    Vehicle:
    2020 Prius Prime
    Model:
    Limited
    Maybe try another dealer for a second opinion. Sometimes abs wheel sensors go out and what about a brake flush?
     
    #11 Mr.Vanvandenburg, Apr 9, 2024
  12. Paladain55

    Paladain55 Active Member

    Joined:
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    Location:
    The South
    Vehicle:
    2010 Prius
    Model:
    Two
    Whew yikes
     
    #12 Paladain55, Apr 10, 2024
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