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New noise on a 2010 Prius

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Marlowe, Aug 23, 2024 at 10:11 AM.

  1. Marlowe

    Marlowe Junior Member

    Joined:
    Feb 3, 2011
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    NY
    Vehicle:
    Other Non-Hybrid
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    N/A
    I’ve been experiencing a noise recently. It kind of sounds like an electric motor straining/whirring. It switches on for a sec or two and then stops. It keeps on repeating every 30 seconds or so. It’s coming from the driver’s side of top of the engine and I hear it from inside the car. I can hear it when the car is on but stationary. I have an mp3 but I can't see to upload it here as an attachment.

    Any ideas?
     
    #1 Marlowe, Aug 23, 2024 at 10:11 AM
  2. Tombukt2

    Tombukt2 Senior Member

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    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Brake pump .pumping up brake accumulator. Usually internal leak.
     
    #2 Tombukt2, Aug 23, 2024 at 10:40 AM
  3. ChapmanF

    ChapmanF Senior Member

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    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Sounds like a sort of muffled rattlesnake or joy buzzer? Brake pump.
     
    #3 ChapmanF, Aug 23, 2024 at 12:08 PM
  4. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
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    Location:
    Florida
    Vehicle:
    2010 Prius
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    Two
    My brake pump has been doing that since July 2017, maybe longer.
     
    #4 ASRDogman, Aug 23, 2024 at 12:34 PM
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
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    Plug-in Base
    How many miles on her?

    I think you need 5 posts to add a link
     
    #5 bisco, Aug 23, 2024 at 12:59 PM
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