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Hollow rattle over bumps at low speed (2020 Prime)

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by ezrastiles, Oct 28, 2019.

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  1. ezrastiles

    ezrastiles Junior Member

    Joined:
    Oct 28, 2019
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    Location:
    Boston
    Vehicle:
    2020 Prius Prime
    Model:
    LE
    I've got a month-old 2020 Prius Prime LE with 800 miles on it now. Love the car, but it's developed a plasticky, hollow-sounding rattle when going over bumpy roads at low speeds (<20 mph). It is especially present if the bump causes the car to roll a bit.

    Like I said, it's a plastic sound, almost like a coin stuck in a water bottle. It will increase in frequency for a couple seconds (like a coin coming to rest on a tabletop) then go away. Seems to be coming from under the car but honestly I'm not sure.

    Many thanks for any advice and/or similar stories!
     
    #1 ezrastiles, Oct 28, 2019
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,133
    50,050
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    congrats and welcome!

    your car is under warranty, take it back to the dealer for free analysis (and hopefully repair)

    all the best!(y)
     
    #2 bisco, Oct 29, 2019
  3. ctscoob

    ctscoob Junior Member

    Joined:
    Aug 9, 2019
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    Location:
    CT
    Vehicle:
    2020 Prius Prime
    Model:
    Limited
    License plate frame? Is anything in your center console? Glove box? (I had a weird rattle and turned out to be my spare sunglasses I forgot I had stashed in my center console).
     
    #3 ctscoob, Nov 7, 2019
    bisco likes this.
  4. Tips

    Tips Member

    Joined:
    Dec 22, 2019
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    Location:
    Grand Forks, B.C. Canada
    Vehicle:
    2020 Prius Prime
    Model:
    Plug-in Base
    Could it be the passenger seat belt hitting the plastic side if it is twisted. I have had this happen on two occasions.

    Posted via the PriusChat mobile app.
     
    #4 Tips, Dec 30, 2019
    bisco likes this.
  5. MScelery

    MScelery Junior Member

    Joined:
    Mar 20, 2018
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    Location:
    Mississippi
    Vehicle:
    2011 Prius
    Model:
    Four
    I have a 2021 and I think I have the same issue… OP: did yours get resolved? What was it?
     
    #5 MScelery, Apr 14, 2022
  6. blizzardgal

    blizzardgal Junior Member

    Joined:
    Sep 8, 2011
    25
    16
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    Location:
    Freeland
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    I have the same type of rattle. The rattle seemed to also be temperature dependent. The colder the temperature the more I noticed it. The dealer found it to be a plastic panel on the rear hatch. They replaced the panel and for about a month the rattle disappeared. Unfortunately it returned, so I am guessing it is a fit problem. I haven't noticed as much since our temps have been in the 60s and 70s. It was the top panel above the rear hatch window. Rattles annoy me, but I am just going to live with it unless I can find away to secure the panel. Turn the music up and go on. Good luck with yours.
     
    #6 blizzardgal, Apr 14, 2022
  7. MScelery

    MScelery Junior Member

    Joined:
    Mar 20, 2018
    44
    14
    0
    Location:
    Mississippi
    Vehicle:
    2011 Prius
    Model:
    Four
    Mine seems to be more from the bottom of the car, either by driver front tire area or just below the driver seat. It’s hard to really tell. It’s more like a “knocking” sound the more I think about it.
     
    #7 MScelery, Apr 14, 2022
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