Brake Actuator/Accumulator Noise on Startup

Discussion in 'Gen 2 Prius Main Forum' started by Marvinh, Apr 24, 2009.

  1. Marvinh

    Marvinh Marvin

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    I have posted a couple of other threads about noise from the Brake Actuator / Accumulator assembly on startup. And I received differing opinions on whether to replace the pump.

    I recently found the following paragraph in the 2007 Prius owner's manual (page 327) which shows Toyota is aware of the noise, but still put out a TSB on it:

    ' You may hear a small sound in the engine compartment after the hybrid system is started or the brake pedel is depressed repeatedly. This is a pump pulsating sound of the brake system, and is not a malfunction'.

    So what do you do if you hear this noise? I am inclined to leave it alone rather than have a major repair job done.

    Thanks! Marvin
     
    #1 Marvinh, Apr 24, 2009
  2. firepa63

    firepa63 Former Prius Owner

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    It's normal...
     
    #2 firepa63, Apr 24, 2009
  3. KTPhil

    KTPhil Active Member

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    I have gotten used to the sound of the Prius Phart.
     
    #3 KTPhil, Apr 24, 2009
  4. mathan

    mathan Junior Member

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    ROTFL - I'll have to remember that.
     
    #4 mathan, Apr 26, 2009
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