ABS lights, Brake Power low, ICS sytem

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Warren Gerhardt, Aug 3, 2025.

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  1. Warren Gerhardt

    Warren Gerhardt New Member

    Joined:
    Aug 3, 2025
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    Location:
    44691
    Vehicle:
    2018 Prius Prime
    Model:
    Plug-in Advanced
    I have a 2018 prius prime advanced (120K) and my teen daughter has the 2018 prius prime plus (132K).

    I changed her brakes (pads and rotors) after getting the car in October, 2024. I finally got around to changing mine yesterday, August 2nd 2025. I am quite confident I repeated the process step for step but my prius is flashing a plethora of warnings, making a constant alert noise, and telling me to stop driving b/c of low brake power.

    I tried the 4,13 pin reset to no avail. I welcome any advice from this wise crowd. I am no expert but interested in learning.

    There are additional sensors on my Advanced. Do these differences required different behavior on my part or did I incidentally disturb a sensor, or something else?...Thank you
     
    #1 Warren Gerhardt, Aug 3, 2025
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    113,202
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    do the wheels spin freely when you jack it up? if so, i would go through your installation carefully, check the speed sensor wiring and harnesses, and if necessary, scan the trouble codes with tech stream or autel
     
    #2 bisco, Aug 3, 2025
  3. Brian1954

    Brian1954 Senior Member

    Joined:
    Jan 31, 2021
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    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    Start by connecting a scanner to the OBD2 port and read the trouble codes that the car is trying to tell you about.
     
    #3 Brian1954, Aug 3, 2025
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