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Ball dropping after break release from stop

Discussion in 'Gen 2 Prius Main Forum' started by SanGregprius, Nov 2, 2022.

  1. SanGregprius

    SanGregprius Junior Member

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    Location:
    san gregorio ca
    Vehicle:
    2007 Prius
    Model:
    Base
    I know it’s mechanical related as it only happens when break pedal is released after stopping. Sounds like a marble being dropped as the speed picks up and stops rather abruptly. I don’t have kids
    Performance not effected at the moment. Has been on the to do list over a year. And it doesn’t always happen car hot or cold.

    thanks
     
    #1 SanGregprius, Nov 2, 2022
  2. PriusCamper

    PriusCamper Senior Member

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    Location:
    Pacific Northwest, USA
    Vehicle:
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    Model:
    Two
    Can you get someone else to drive while you try to figure out location of noise? Or is it coming directly from the brake pedal area?
     
    #2 PriusCamper, Nov 2, 2022
  3. SanGregprius

    SanGregprius Junior Member

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    Location:
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    Vehicle:
    2007 Prius
    Model:
    Base
    Yes have tried to hear it but the sound is really hard to locate. I know it is coming from the front half of the vehicle only.
     
    #3 SanGregprius, Nov 2, 2022
  4. ColoradoCrow

    ColoradoCrow Active Member

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    Location:
    Leawood, KS
    Vehicle:
    2008 Prius
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    I
    After a stop your break calipers are to release and slide back. If the pins are a dry they can squeak whine or make a drop sounds. mine do it every times with a squeak. I just haven’t had time to take apart and relive them. But I know that is what it is. I walked next to the car while my friend drove it. Originally listening for CV axle clinch when turning.
     
    #4 ColoradoCrow, Nov 11, 2022
  5. SanGregprius

    SanGregprius Junior Member

    Joined:
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    Location:
    san gregorio ca
    Vehicle:
    2007 Prius
    Model:
    Base
    Great idea on walking out side of car. I’ll try that. Cheers
     
    #5 SanGregprius, Nov 11, 2022
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