Diagnosing Brake Sound

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Christian Muise, Jul 22, 2026.

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  1. steamedhams

    steamedhams New Member

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    #21 steamedhams, Jul 28, 2026
  2. Christian Muise

    Christian Muise New Member

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    @steamedhams Bingo on the recording! "stepping on an old floorboard" is a great way to describe it. By the looks/sounds of it, I think we have the same issue.

    > 2. I can get the creaking at standstill on flat ground without moving by releasing then pressing the brake quickly

    I haven't tried this yet, but will and get back to you. Very much would like to get this properly diagnosed!
     
    #22 Christian Muise, Aug 7, 2026
  3. Christian Muise

    Christian Muise New Member

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    @steamedhams For the rapid depress -- in neutral or in drive? Wasn't able to get it with neutral, but didn't drive it much before trying...
     
    #23 Christian Muise, Aug 10, 2026
  4. steamedhams

    steamedhams New Member

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    Mystery solved. It's the exhaust flange, more specifically the donut gasket that rubs between in the flange.

    The engine moves and shifts a bit at low speed so the exhaust flange allows the pipe to bend rather than be rigid.

    My mechanic (who is awesome) took a look and confirmed it. I also found a post with the same problem,

    Supposedly it's not a critical issue.

    Another post with the same issue:
     
    #24 steamedhams, Aug 22, 2026 at 9:51 PM
    Brian1954 likes this.
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