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Please help making weird buzzing

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Josiah De La Rosa, Dec 19, 2022.

  1. Josiah De La Rosa

    Josiah De La Rosa New Member

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    Hello my Prius has been making this sort of buzzing noise kinda sounds like it’s behind or in the main hybrid snyergy drive. It’s making this sound every 2 to 6 seconds when driving and park or in idle what do I do ? Does anyone know what this is
     
    #1 Josiah De La Rosa, Dec 19, 2022
  2. Josiah De La Rosa

    Josiah De La Rosa New Member

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    Here is the video [​IMG]
     
    #2 Josiah De La Rosa, Dec 19, 2022
  3. Tombukt2

    Tombukt2 Senior Member

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    Possibly brake system . I think no videos till a few posts make it through.
     
    #3 Tombukt2, Dec 20, 2022
  4. dolj

    dolj Senior Member

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    It is likely the brake actuator sounding the death knell.

    Do you have any trouble codes to share?
     
    #4 dolj, Dec 20, 2022
  5. TheLastMojojomo

    TheLastMojojomo Active Member

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    #5 TheLastMojojomo, Dec 20, 2022
  6. mr_guy_mann

    mr_guy_mann Senior Member

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    Have the car in ready mode while listening to the noise. Now press the brake pedal firmly several times - quickly. Does the sound become more frequent or continuous?

    If it does then the noise is the pump inside the brake actuator assembly. The actuator contains the pump, hydraulic valve block, and other bits in one "you have to replace the whole part" & is leaking internally (quite badly) and is well on its way to complete failure.

    Posted via the PriusChat mobile app.
     
    #6 mr_guy_mann, Dec 20, 2022
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