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Brake system burps

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by hemi71cuda, Aug 17, 2020.

  1. hemi71cuda

    hemi71cuda Junior Member

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    Recently acquired a used 2010 with 134k. Brakes felt weird compared to my 2004 but I’ve gotten used to it. It makes funky burping/farting/clunking noises every so often though. I was able to catch one in a video after my drive home today. This occurred about a minute and a half after turning car off:




    I figured the first place to start is bleeding the brake system unless anyone has a more informed idea.
     
    #1 hemi71cuda, Aug 17, 2020
  2. bisco

    bisco cookie crumbler

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    pretty common issue. may stay like that, or you may have to replace the actuator someday. changing the fluid was a good move
     
    #2 bisco, Aug 18, 2020
  3. ASRDogman

    ASRDogman Senior Member

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    Sounds like the recirculate flat releasing to the fresh air setting after shutting the car off.
    And the brake accumulator releasing pressure also. Mine make the same noises, more or less.

    The brakes definitely take some getting use too! If you barely touch them, the regenerative braking
    is working. A lot different than my van!
     
    #3 ASRDogman, Aug 18, 2020
  4. ChapmanF

    ChapmanF Senior Member

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    That is exactly what it does, about that long after turning the car off, every single time. It's a routine self test. Every poster who has chimed in about it being some harbinger of dooooooooooom ought to go listen to it in their own car.
     
    #4 ChapmanF, Aug 18, 2020
    ASRDogman likes this.
  5. ASRDogman

    ASRDogman Senior Member

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    It will take a while to get use to all the funny noises the Prius makes.
    Read the owners manual. It will give you some insight to what's happening...
     
    #5 ASRDogman, Aug 18, 2020
  6. hemi71cuda

    hemi71cuda Junior Member

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    I get similar and more varied squeks, burps and noises during operation as well. It was just easier and much safer to try and capture this common after shut down occurrence.
    I am coming directly from a 2004 Prius that was totaled in an accident. I’m accustomed to the normal coolant Pump noises and brake pump noises and when they occurred in the gen 2.
    I’m gonna try not to panic about a major brake system repair but the noises that occur while the vehicle is in use really don’t seem like they should be “normal”.
     
    #6 hemi71cuda, Aug 20, 2020
  7. pjksr02

    pjksr02 Active Member

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    Have you made sure you're up-to-date on all the recalls on your Prius? Also, Toyota enhanced (extended) the warranties on a couple of systems (including the intelligent power module and the brake booster), that you should be aware of.

    Are you aware of the EGR system clogging problems with this generation?
     
    #7 pjksr02, Aug 20, 2020
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