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Is my ABS braKING SYSTEM GOING BAD?

Discussion in 'Gen 2 Prius Main Forum' started by B nason, Oct 9, 2022.

  1. B nason

    B nason Junior Member

    Joined:
    Jun 28, 2022
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    Location:
    Fla
    Vehicle:
    2008 Prius
    Model:
    II
    Is my ABS braking system going bad? I hear a pumping sound when I have my foot on the brake at A stoplight. I avoid it by placing the car in park.
     
    #1 B nason, Oct 9, 2022
  2. Tombukt2

    Tombukt2 Senior Member

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    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Sounds like it do you have any ABS VSC traction control lights any of that on are you low on brake fluid?
     
    #2 Tombukt2, Oct 10, 2022
  3. ChapmanF

    ChapmanF Senior Member

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    Model:
    IV
    Do you hear the pumping sound often when your foot is not on the brake? Or only when you are holding the brake pedal?
     
    #3 ChapmanF, Oct 10, 2022
  4. JahT

    JahT Member

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    Dec 10, 2007
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    It could be your climate control system, one of the servos trying to find position and "pumping" back and forth. I hear it on mine and assumed it was the brakes, but next time you hear it try changing your climate vent settings and I think you'll hear it stop for a second as doors open/close in the climate system. I am not 100% sure, but I think mine is a servo noise as someone suggested here.
     
    #4 JahT, Oct 12, 2022
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