Alternative method to remove Maintenance Required off?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Fantasticpow, Sep 3, 2025 at 10:33 PM.

  1. Fantasticpow

    Fantasticpow New Member

    Joined:
    Apr 4, 2025
    6
    1
    0
    Location:
    California
    Vehicle:
    2013 Prius
    Model:
    Three
    Hello, based on the instruction, I am to 1) Set display to Trip A 2) Turn car off 3) While holding down MPH/KPH button press Power button with foot on brake. Unfortunately, my TRIP button my steering wheel don't work, so theres no way to set it to Trip A or B.
    Are there any alternative manual way to reset it?
    Are there anything within my car stereo screen that can access a reset?
    Are there any device like OBD2 scanner to reset it?
    I bought an $80 OBD2 scanner, but it wasn't able to detect any faulty with my steering Wheel issue, even thought my TRIP/ DISPLAY button fail to respond, and that OBD2 Scanner can't remove the maintenance required off.
     

    Attached Files:

    #1 Fantasticpow, Sep 3, 2025 at 10:33 PM
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    112,986
    51,423
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    maybe with tech stream, idk. you could contact autel and ask if the autel 200 will do it
     
    #2 bisco, Sep 4, 2025 at 3:13 PM
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    26,907
    17,653
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Does your car have the Touch Tracer feature or not?

    Touch Tracer shows you little purple outlines of the steering wheel buttons over the speedometer when you are touching them.

    Looking in this wiring diagram screenshot, the Touch Tracer wiring is (*6) and the without-Touch-Tracer wiring is (*7).

    [​IMG]

    In the non-Touch-Tracer version, the TRIP switch simply grounds the combination meter's AU2 input (a black wire) ... I'm guessing through a certain resistance (the detail is cut off the bottom of that screenshot, but I see on another diagram that the MODE button grounds AU2 directly, while all the other buttons that connect to AU2 ground it through different resistances. If you knew the right resistance you could apply it right at the black-wire pin 9 of the connector on the column side of the spiral cable, and that should be the same as pressing the TRIP button.

    If you have the Touch Tracer flavor, then the TRIP button is just an input to a microcontroller in the steering wheel and causes a certain message to be sent over the green STRG circuit. That would be harder to spoof. You might just have to replace the spiral cable first (consider an element of required maintenance ;)), and then you'll be able to reset the maintenance required indication.
     
    #3 ChapmanF, Sep 4, 2025 at 4:20 PM
    Fantasticpow likes this.
  4. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    7,374
    3,841
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    Try going to an auto parts store. They have a reader that can do it.

     
    #4 ASRDogman, Sep 4, 2025 at 4:26 PM
  5. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    6,550
    4,221
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    Easy, pull the 12v lead for
    10
    Sec
    And
    Reconnect.
     
    #5 Grit, Sep 4, 2025 at 11:45 PM
  6. Fantasticpow

    Fantasticpow New Member

    Joined:
    Apr 4, 2025
    6
    1
    0
    Location:
    California
    Vehicle:
    2013 Prius
    Model:
    Three
    I did that, and I waited for 1 hour.
     
    #6 Fantasticpow, Sep 5, 2025 at 12:01 AM
  7. Fantasticpow

    Fantasticpow New Member

    Joined:
    Apr 4, 2025
    6
    1
    0
    Location:
    California
    Vehicle:
    2013 Prius
    Model:
    Three
    thanks I haven't thought of that.
     
    #7 Fantasticpow, Sep 5, 2025 at 12:01 AM
    ASRDogman likes this.
  8. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    7,374
    3,841
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    You're very welcome.

     
    #8 ASRDogman, Sep 5, 2025 at 7:18 AM
  9. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
    9,791
    6,036
    7
    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Let us know if it works on a gen3. Newer vehicles have different ways to reset the maintenance needed.
     
    #9 rjparker, Sep 5, 2025 at 7:58 AM
    Brian1954 likes this.
  10. Mendel Leisk

    Mendel Leisk MMX GEN III

    Joined:
    Oct 17, 2010
    59,398
    40,864
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Would it be possible to just disable the maintenance alert? Canadian spec 3rd gens are thus, a blessing.
     
    #10 Mendel Leisk, Sep 5, 2025 at 9:51 AM
(You must log in or sign up to post here.)