Abs or Wheel bearing issue?

Discussion in 'Gen 3 Prius Technical Discussion' started by Jammy, Oct 24, 2023.

  1. Jammy

    Jammy New Member

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    Having issues around 40+ mph with abs locking in left front wheel and almost pulling me into oncoming lane. Traction light flashes, but doesn't store any codes. Replaced the wheel speed sensor and still having the same issue. Anyone had this happen before?
     
  2. Tombukt2

    Tombukt2 Senior Member

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    No but have any calipers or wheel cylinders had to be undone for any reason ever that you know of that almost sounds like bad brake fluid overheating and expanding vapor lock in the brake line kind of can cause similar things I've seen motorcycles lock up the brakes and throw drivers out in the middle of traffic. When my ABS actuator accumulator pump assembly the whole nine was going bad on the generation 2 the last leg of the journey on my failing system was one right caliper working for breaking that was it everything else was not happening so as you can imagine the car would fly off to one way very quickly. Once the actuator and assembly was changed and bled lights and everything went away and all was back to normal in the bragging department pedal feel and all of it
     
  3. ChapmanF

    ChapmanF Senior Member

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    With Techstream, or certain other scan tools, you can pull up the history of the most recent 4 times the ABS or traction control activated. It will show everything the car thought was happening at the time, the sensed speeds at all four wheels, the g forces ahead/behind and side/side, and the yaw rate. That might show that the car was really reacting to a signal from, say, some other wheel than the one where you replaced the sensor.