Master Warning Light and More

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by PriusII&C, Jul 11, 2025 at 12:17 AM.

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  1. PriusII&C

    PriusII&C Active Member

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    2012 Prius 144k miles. Car has been performing well and no major issues. However it suddenly displaces a few warning lights: check engine, brake, traction control, and the master warning yellow triangle light. Pictures attached. Don't know what is wrong. Hope to get your insight. Screenshot_20250710-205906_Gallery.jpg Screenshot_20250710-205919_Gallery.jpg
     
    #1 PriusII&C, Jul 11, 2025 at 12:17 AM
  2. Grit

    Grit Senior Member

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    Since reading check engine codes wasn’t an option, your local mechanic will be your best option.
     
    #2 Grit, Jul 11, 2025 at 12:46 AM
  3. Brian1954

    Brian1954 Senior Member

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    Did you ever think about using a scanner to reading the trouble codes that the car is trying to tell you about?

    Is this a 2012 Prius OR a 2012 Prius c?
     
    #3 Brian1954, Jul 11, 2025 at 8:55 AM
    Last edited: Jul 11, 2025 at 9:21 AM
  4. PriusII&C

    PriusII&C Active Member

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    Not sure if we should drive the car, so purchased a scanner online and waiting for its arrival. Will update once getting the codes.

    It is the 2012 Prius.
     
    #4 PriusII&C, Jul 11, 2025 at 9:50 AM
  5. ChapmanF

    ChapmanF Senior Member

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    #5 ChapmanF, Jul 11, 2025 at 9:53 AM
  6. Brian1954

    Brian1954 Senior Member

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    What make and model of scanner did you purchase?
     
    #6 Brian1954, Jul 11, 2025 at 2:07 PM
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