Abs light , brake light on , tc light on , brake pedal very hard on prius plus , v , alpha

Discussion in 'Prius v Technical Discussion' started by Jass, Feb 7, 2025.

  1. Jass

    Jass New Member

    Joined:
    Aug 5, 2024
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    Location:
    Ireland
    Vehicle:
    2012 Prius Alpha
    Model:
    Plug-in Advanced
    Hi
    I have 2013 toyota prius plus, v / alpha , 7seater, suddenly today , abs light, brake lights, tc light comes on and brake pedal became a very hard , very low brake efficiency, one thing more last year I had changed its icu whole computer.

    Last month I have replaced new brake pads , after few day s the squeezing noise started to come in morning whenever i reversed it. I brought car back mechanic told every prius does it after changing the pads.
    Could someone help me what's the real problem for brakes lights and abs or what to do next.
    I would be very thankful
     
    #1 Jass, Feb 7, 2025
  2. Brian1954

    Brian1954 Senior Member

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    Model:
    III
    You need to use a scan tool to check for the trouble codes.
     
    #2 Brian1954, Feb 8, 2025
  3. rjparker

    rjparker Tu Humilde Sirviente

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    Three
    Most likely the brake booster assembly (master cylinder) needs replacement. A common problem.

    See codes in attached
     

    Attached Files:

    #3 rjparker, Feb 8, 2025
  4. Tim Jones

    Tim Jones Senior Member

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    ----USA----
    Guaranteed Brake Pump and Master............. yikes... I've done it ..... used one blew in six moths.... and I got a new one installed from toy... just befroe the deadline...
    They usually run a lot u can hear many times..... should come on once in a while for very short time... but when getting bad runs all day. buzzing noise under the hood..... hear it easily when in hybrid mode
     
    #4 Tim Jones, Feb 13, 2025
    Last edited: Feb 13, 2025
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