Juddering and traction control light

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Fefnirshead, Aug 1, 2023.

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  1. Fefnirshead

    Fefnirshead Junior Member

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    Hello! I got my 2013 Prius a few weeks ago. It has 80,000 miles on it. I was going about 30 mph when it suddenly felt like my brakes had engaged automatically, accompanied by a scraping noise. The traction control light also came on. The noise and feeling were like a tire had blown or kind of like driving with the emergency brake on. I pulled over and didn’t see anything wrong with my tires. So I got back on the road and it happened again at around 25mph. I turned off the car and started it up again and it drove smoothly the rest of the way home. Any idea what this might be?
     
    #1 Fefnirshead, Aug 1, 2023
  2. Tim Jones

    Tim Jones Senior Member

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    The only time my traction light came on was when the front tires spun on wet pavement. Was it the 2 squiggly yellow lines?
    Probably some more help on here in a bit.
     
    #2 Tim Jones, Aug 1, 2023
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  3. Fefnirshead

    Fefnirshead Junior Member

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    Yeah, the squiggly lines. In my previous Prius, I’ve had those come on in snow, but never just out of the blue.
     
    #3 Fefnirshead, Aug 1, 2023
  4. Air_Boss

    Air_Boss Senior Member

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    Did you pick up debris between a rotor and backing plate? Which fell off after your second event?
     
    #4 Air_Boss, Aug 2, 2023
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  5. Tim Jones

    Tim Jones Senior Member

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    This sounds Very Reasonable.... because it has happened to me with my van

    Only thing kinda funny is the traction control light.....unless it slowed the wheel down.
     
    #5 Tim Jones, Aug 7, 2023
  6. Air_Boss

    Air_Boss Senior Member

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    If something got wedged in there tight, it undoubtedly slowed the rotation, which beyond a certain delta RPM would trigger the traction control circuit and light.
     
    #6 Air_Boss, Aug 7, 2023
  7. ChapmanF

    ChapmanF Senior Member

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    Are all four tires the same size and style?

    With a scan tool, I would let a copilot watch the four wheel RPMs while I drove down a straight road, to see if they were all reading the same.
     
    #7 ChapmanF, Aug 8, 2023
  8. Tim Jones

    Tim Jones Senior Member

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    magic-eight-ball-outlook-not-so-good-photo-researchers-inc.jpg
     
    #8 Tim Jones, Aug 8, 2023
  9. Tim Jones

    Tim Jones Senior Member

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    bloup.gif
     
    #9 Tim Jones, Aug 8, 2023
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  10. Air_Boss

    Air_Boss Senior Member

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    Catastrophic EGR failure...
     
    #10 Air_Boss, Aug 8, 2023
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  11. Tim Jones

    Tim Jones Senior Member

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    NHRA Accident Investigation Results of the cause of engine explosion was
    178893_IMG_20191129_154400.jpg
     
    #11 Tim Jones, Aug 8, 2023
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