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Juddering and traction control light

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

  1. Fefnirshead

    Fefnirshead New 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?
     
  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.
     
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  3. Fefnirshead

    Fefnirshead New 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.
     
  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?
     
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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.
     
  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.
     
  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.
     
  8. Tim Jones

    Tim Jones Senior Member

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  9. Tim Jones

    Tim Jones Senior Member

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  10. Air_Boss

    Air_Boss Senior Member

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    Catastrophic EGR failure...
     
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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
     
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