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Strange sound 2009 Prius

Discussion in 'Gen 2 Prius Technical Discussion' started by gr8fl4295, Jul 14, 2011.

  1. gr8fl4295

    gr8fl4295 New Member

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    Location:
    Austin
    Vehicle:
    2009 Prius
    Model:
    Three
    I just bought a 2009 Prius.
    It drives like a beauty.
    But sometimes she I accelerate and brake, there is a strange grinding like noise. Seems like its coming from the inside of the car, maybe in dashboard.
    I'm not familiar with all the sounds the Prius makes, but this doesn't sound like any noise I've heard in a car.

    Thanks in advance.
     
    #1 gr8fl4295, Jul 14, 2011
  2. seilerts

    seilerts Battery Curmudgeon

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    That is the accumulator pump in the ABS hydraulic brakes.
     
    #2 seilerts, Jul 15, 2011
  3. cycledrum

    cycledrum PSOCSOASP

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    For a second I was thinking about that farty coolant thermos pump (is that correct?) sound that occurs randomly. But that has nothing to do with accelerating and braking. Never did like that sound much. It's much quieter in 3rd gen.
     
    #3 cycledrum, Jul 15, 2011
  4. Agape

    Agape Member

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    Is the option to upload recordings to this chat to let member listen?

    youtube and copy&paste the link?
     
    #4 Agape, Jul 15, 2011
  5. gr8fl4295

    gr8fl4295 New Member

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    Location:
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    Vehicle:
    2009 Prius
    Model:
    Three
    Should I be concerned?
    Is it normal to make that grinding sound?
     
    #5 gr8fl4295, Jul 15, 2011
  6. seilerts

    seilerts Battery Curmudgeon

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    Absolutely normal. The Prius is extremely picky about its brakes. If there is a problem of any sort, the dash will light up with yellow warning lights.
     
    #6 seilerts, Jul 15, 2011
  7. Politburo

    Politburo Active Member

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    If it sounds a bit like a refrigerator compressor at a higher pitch (and with a kind of "bubbly" sound), coming from the left of the steering wheel, that's normal. You can easily replicate this sound by pumping the brakes with the car off.
     
    #7 Politburo, Jul 15, 2011
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