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Groaning sound after I stopped the Prime

Discussion in 'Prime Main Forum (2017-2022)' started by Roy2001, Apr 3, 2018.

  1. Roy2001

    Roy2001 Active Member

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    I searched but could not find anyone complaining about it.

    Whenever I stop the car, either in garages, parking lots or before red light, it would give some weird groaning sound. 1-10 seconds after I stop the car. Has anyone noticed it?

    It is pretty loud, not like from mechanical parts, but not like from speaker either, but I can clearly tell it is from the front part of the car, inside. It is pretty annoying.
     
    #1 Roy2001, Apr 3, 2018
  2. bisco

    bisco cookie crumbler

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    it might be normal, can you record it?
     
    #2 bisco, Apr 3, 2018
  3. bwilson4web

    bwilson4web BMW i3 and Model 3

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    It is me pissed that I didn't have further to drive. Oh, your car? I don't know.

    Bob Wilson
     
    #3 bwilson4web, Apr 4, 2018
    pilotgrrl and priuscatprimeguy like this.
  4. David Beale

    David Beale Senior Member

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    My guess would be the fuel system releasing the pressure once off. Pearl S does this.
     
    #4 David Beale, Apr 4, 2018
  5. fotomoto

    fotomoto Senior Member

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    My dog in the backseat does this every time I pull into the garage.

    When my mechanical brakes are cold, they groan and moan a bit till warmed up. There's also the brake pressurizing sounds that are fairly loud and gen 2's have the thermos bottle sounds but the OP says all the time. Are you sure it's really all the time, every time? If so, that's not normal and you should have a dealer look/listen to it.
     
    #5 fotomoto, Apr 4, 2018
  6. David Beale

    David Beale Senior Member

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    Well my car does it every time. Most describe it as a "fart". And I'm pretty sure it's the fuel system venting into the canister.
     
    #6 David Beale, Apr 4, 2018
  7. bisco

    bisco cookie crumbler

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    also, you should change your vehicle info.(y)
     
    #7 bisco, Apr 4, 2018
  8. FuelMiser

    FuelMiser Senior Member

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    At least since Gen 2, Prius' have made odd sounds after shut-off.
     
    #8 FuelMiser, Apr 4, 2018
  9. Diemaster

    Diemaster Active Member

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    does it do it when pressing on the the brake? it could be the vacuum pump to produce the vacuum needed for the brake booster.
     
    #9 Diemaster, Apr 5, 2018
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