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Whistling Noise - Highway Driving

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by jokem, Oct 11, 2012.

  1. jokem

    jokem Junior Member

    Joined:
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    Vehicle:
    2007 Prius
    Model:
    Two
    Hello!

    I wondered if you all had any inputs to what could be causing a whistling noise (wind) typically when I'm driving at highway speed. I believe both speed and wind direction are a factor because I never hear the whistling noise at low speeds and at highway speeds, the noise can come and go.

    I did some searching and found that people have found success with taping up the three holes underneath both side view mirrors. I covered the holes with painters tape but the whistling still remains.

    Anyone have any suggestions?

    Thanks!
     
    #1 jokem, Oct 11, 2012
  2. GrumpyCabbie

    GrumpyCabbie Senior Member

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    North Yorkshire, UK
    Vehicle:
    2010 Prius
    Model:
    III
    Check that all the windows are actually up.

    Sounds obvious, but often a passenger (or you) can knock their window switch when getting out and the window can go down a quarter inch. This is enough to allow a whistle but up enough for you to think the window is fully up when you glance at it. It's happened to me a fair number of times.

    Failing that I have no idea.
     
    #2 GrumpyCabbie, Oct 12, 2012
  3. bisco

    bisco cookie crumbler

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    i would check all the trim front to back, did you just purchase the car? how long have you had it? when did the noise start?
     
    #3 bisco, Oct 12, 2012
  4. ozarkretiree

    ozarkretiree Member

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    Four Touring
    Check the bottoms of your side mirror housings. The rubber/plastic plugs can get knocked out and it sets up a loud whistle at highway speeds. I duck taped over mine to confirm the fix and then got used plugs at the salvage yard.
     
    #4 ozarkretiree, Oct 13, 2012
  5. MikeBee

    MikeBee New Member

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    Location:
    USA
    Vehicle:
    2004 Prius
    Model:
    II
    the way I fixed this I removed the speaker that was on the door up by the window, applied weather stripping, (purchased at lowes) applied the weather stripping inside, no more whistling!!!
     
    #5 MikeBee, Sep 6, 2017
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