1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2021 Prius prime cabin noise above 30+mph

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by seeforyourself, Mar 2, 2021.

  1. seeforyourself

    seeforyourself Junior Member

    Joined:
    Aug 16, 2017
    36
    20
    0
    Location:
    New York City
    Vehicle:
    2017 Prius
    Model:
    Three Touring
    Hey guys. I am hearing an annoying noise which sounds exactly like that uncomfortable bass noise of when a rear window is open. its like a buffeting/throbbing sound. All the windows are closed and so is the trunk. Do any of you guys exhibit this issue?
     
    don_chuwish and ImaRogers like this.
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,539
    49,321
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    at what speed does it start?

    try lowering each window, one at a time to see if the sound changes
     
    Cinco likes this.
  3. Prius7Prime

    Prius7Prime Junior Member

    Joined:
    Dec 6, 2017
    58
    15
    0
    Location:
    Long Beach
    Vehicle:
    2012 Prius Alpha
    Model:
    Prime Advanced
    you say this only happens over 30? AND all the windows are closed? i agree with bisco - experiment with windows just slightly down, see what happens then. otherwise i dont really have a clue sorry...
     
  4. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,508
    14,108
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    Did you look for a loose panel under the car? Depending on what's loose and where, it could be a low frequency sound.
     
    douglasjre likes this.
  5. SciRunner

    SciRunner Junior Member

    Joined:
    Dec 19, 2020
    48
    23
    0
    Location:
    Charm City, USA
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    Is the issue new from day one or after # of miles? Does you car run on Bridgestone Ecopias 422Plus 91S made in Japan tires? Built on or after October 2020?

    If so, I would check the tires. Could be flat spotting that driving over them for hundreds of miles won't make them round again. I had a similar issue. Dealer moved rear tires to the front and it was worse. Also it felt like the car was about to fall apart. Toyota/Dealer worked and replaced three tires after noticing road forcing the original tires did not work. Quieter now on mostly new set of the same model tires.
     
    #5 SciRunner, Mar 4, 2021
    Last edited: Mar 4, 2021
    seeforyourself likes this.
  6. seeforyourself

    seeforyourself Junior Member

    Joined:
    Aug 16, 2017
    36
    20
    0
    Location:
    New York City
    Vehicle:
    2017 Prius
    Model:
    Three Touring

    I have those exact same tire. Odd since I heard Bridgestone is a REALLY good tire brand. I don’t think I hear it as much anymore.

    can a tire balancing confirm flat spots, or can you see it by a visual inspection?
     
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,539
    49,321
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    all tire mfgs are subject to defects
     
  8. 100 free watt hours

    100 free watt hours Junior Member

    Joined:
    Aug 2, 2012
    20
    5
    0
    Vehicle:
    2010 Prius
    Model:
    Three
    Make sure the rear hatch is closed. If a blanket or some other object gets wedged in between the hatch and the door opening it will still lock and not show the hatch is open on the dash light. Same goes for the doors. Just takes a small crack to make noise. I had this happen on my 2019 Prime.
     
    jerrymildred likes this.
  9. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
    3,571
    1,257
    1
    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    Experiment with Prime windows? What, like crack both fronts, one side in the rear for flow around venting to the opposite side of the cracked rear window?

    A Rumba ling with both rears down, hummm

    sheet - I got notifications
     
  10. ETP

    ETP 2021 Prime(Limit),24 Venza Limit,B52-D,G,F,H

    Joined:
    Apr 12, 2009
    2,801
    1,170
    0
    Location:
    Auburdale FL
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    Tires make a lot of noise BTW on certain roads! Dunlap's on the new 2021 from the factory.
    Mine are very noisy at certain speeds and road surfaces. It is not your car! :)

    This is a well known issue with these tires as well as sidewall blow outs!

    Dunlop Enasave 01 A/S | P195/65R15 (tirerack.com)

    I would be surprised if these had significant noise!

    Bridgestone Ecopia EP422 Plus (S- or T-Speed Rated) | P195/65R15 (tirerack.com)
     
    #10 ETP, Apr 4, 2021
    Last edited: Apr 4, 2021
  11. PiPLosAngeles

    PiPLosAngeles Senior Member

    Joined:
    Nov 18, 2012
    1,550
    720
    0
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    I hear the same thing on my 2021 with 200 miles on it. It's not the tires. It does sound like an open window "thumping," but a bit more quiet. It is kind of irritating.
     
    don_chuwish likes this.
  12. ImaRogers

    ImaRogers New Member

    Joined:
    Jun 7, 2021
    2
    0
    0
    Location:
    Albany, OR 97322, USA
    Vehicle:
    2021 Prius PHV
    Model:
    Plug-in Base
    We just bought a '21 PP, within a week or 2 my husband was complaining about road nose/air he thought was coming from front passenger door area. We took to dealer they checked seals etc and test drove but couldn't hear it. I don't hear it but my husband still does. Do I'll continue to follow this.
     
  13. douglasjre

    douglasjre Senior Member

    Joined:
    Sep 13, 2008
    1,848
    646
    0
    Location:
    Orlando, FL
    Vehicle:
    2010 Prius
    Model:
    ----USA----
    I find it hard to trust Bridgestone or Firestone since the Ford Explorer tire scandal
     
  14. douglasjre

    douglasjre Senior Member

    Joined:
    Sep 13, 2008
    1,848
    646
    0
    Location:
    Orlando, FL
    Vehicle:
    2010 Prius
    Model:
    ----USA----
    Which of the 3 models of prime has the insulation in the doors
     
    ImaRogers likes this.
  15. don_chuwish

    don_chuwish Well Seasoned Member

    Joined:
    May 1, 2009
    816
    182
    0
    Location:
    Southern Oregon
    Vehicle:
    2007 Prius
    Model:
    II
    I notice it as well in my 2021 Limited, right from the start. Exactly like if you have one window slightly open and the air pressure is 'thumping' in the cabin, but very subtle.
    Haven't noted the speed range precisely but definitely somewhere between 35-60. I don't recall noticing it on the highway above 65.
     
    ImaRogers likes this.
  16. PiPLosAngeles

    PiPLosAngeles Senior Member

    Joined:
    Nov 18, 2012
    1,550
    720
    0
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    My 2012 has a whistling noise that happens right around 40-45 mph. A lot of cars have quirks like that.
     
    ImaRogers likes this.
  17. Gcoletta

    Gcoletta New Member

    Joined:
    Jan 23, 2022
    3
    2
    0
    Location:
    NY
    Vehicle:
    2022 Prius Prime
    Model:
    LE
     
  18. Gcoletta

    Gcoletta New Member

    Joined:
    Jan 23, 2022
    3
    2
    0
    Location:
    NY
    Vehicle:
    2022 Prius Prime
    Model:
    LE
    Did it ever go away? Did you have the dealer investigate? How long have you had the car? i just picked up a 2022 Prius prime. It feels a very subtle pulsating pressure feeling in the cabin at higher speeds.

    Thanks
    Guy
     
    ImaRogers likes this.
  19. don_chuwish

    don_chuwish Well Seasoned Member

    Joined:
    May 1, 2009
    816
    182
    0
    Location:
    Southern Oregon
    Vehicle:
    2007 Prius
    Model:
    II
    Paid a bit more attention the past couple of days and have narrowed it down to around 54-57mph. Unfortunately it's also most noticeable on the same stretch of road each time so I'm not 100% sure of the source - cabin pressure or road surface. But it sure feels like cabin pressure oscillation. Will have to find some other smooth road to test on.
     
  20. Gcoletta

    Gcoletta New Member

    Joined:
    Jan 23, 2022
    3
    2
    0
    Location:
    NY
    Vehicle:
    2022 Prius Prime
    Model:
    LE
    Found this in a facebook Prius Prime forum. I’m going to try.
    Quote from Facebook
    “Mine had the EXACT issue too. It sounds like a back window is open, right? It turned out to be the Bridestone Ecopia tires it came with. When the car gets shipped to the USA from Japan, the tires get a flat spot apparently.

    So to fix this, pump the tires to like 40 PSI and it will go away after a few hundred miles”
     
    don_chuwish likes this.