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2007 Prius Brake noise and lockup

Discussion in 'Gen 2 Prius Main Forum' started by rjayb, Dec 28, 2011.

  1. rjayb

    rjayb New Member

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    Hi there guys! I have a 2007 Prius that was a salvage rebuild. I have owned it close to a year without any issues, Now I have noticed that when its cold, and I press in the brakes, I hear a knock from the rear, and it feels like the brake locks up, it only does it as i am coming to a complete stop, so for instance, going from 60 mph to 40 quickly, its fine, but if i slow down to a full stop, I hear it, and feel it, then it takes a second once i press the accelerator to go again, like, it takes it a second to let go, now if i drive it around for 5 minutes or so, that goes away completely...anyone have any ideas?
     
    #1 rjayb, Dec 28, 2011
  2. jpadc

    jpadc Type before I think too often

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    Well if the Prius is working well, from 60 to 7 MPH at moderate braking will be all regenerative which does not involve the back brakes at all, so if the problem is there, you would not notice it under the conditions you describe.

    Likely just the rear pads are out of adjustment.
     
    #2 jpadc, Dec 30, 2011
  3. David Beale

    David Beale Senior Member

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    Or it's the normal switch from regenerative to friction brakes and the delay on start is because the engine shut down after stopping.
     
    #3 David Beale, Dec 30, 2011
  4. cnschult

    cnschult Active Member

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    I had a noise that sounded like a train, but just noise no actual physical problems, a tire shop charged me $15 to clean out the brake dust from the rear drums and the problem went away.

    I hope a simple and cheap solution is all you need.
     
    #4 cnschult, Dec 31, 2011
  5. seilerts

    seilerts Battery Curmudgeon

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    Definitely pull those drums and see what is going on. A leaky wheel cylinder could be causing the grabbing as well. Be sure to disconnect the battery negative cable before performing any sort of brake work.
     
    #5 seilerts, Dec 31, 2011
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