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Fixed Front Passenger Metallic Buzzing/Rattle In Cabin

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Animal Mother, May 21, 2023.

  1. Animal Mother

    Animal Mother New Member

    Mar 18, 2023
    2016 Prius
    Shortly after purchasing my 2016 Prius Three I noticed a very annoying buzzing rattle that only seemed to occur when driving at highway speeds over rough pavement. I thought it might be the front passenger strut assembly as the sound seemed to originate from behind the glovebox towards the front wheel of the car, and a few years back I had a defective rear strut installed an a CR-V that made a similar sound.

    After a few weeks of putting up with this I had my wife drive the car on the interstate while I dropped the glovebox and felt around in the area behind the glovebox and found a couple of sheets of stamped steel on the right side wall of the cabin that had a fair amount of vibration coming from them. These sheets were about a quarter of an inch apart and apparently over rough pavement they were vibrating enough to actually touch which was causing the metallic buzzing that I was hearing. I cut a couple of layers of rubber from an old bicycle inner tube that I cut and wedged into into the gap between the sheets and secured with electrical tape.

    This is completely solved this rattle so I thought I’d share as I’m probably not the only person with this issue. The cabin is much quieter at speed. I would have taken some before and after pictures but had no idea if my fix would work so I just have after photos. Hope this helps.

    IMG_4765.jpeg IMG_4763.jpeg
    bisco likes this.
  2. bisco

    bisco cookie crumbler

    May 11, 2005
    2012 Prius Plug-in
    Plug-in Base
    well done! i didn't think gen 4 had any rattles :(