Annoying metalic rattle

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by nedim, Jan 31, 2015.

  1. nedim

    nedim Junior Member

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    Hey everybody...

    So when I bought one of my cars used I noticed a plastic rattle coming from the dash. Removed the dash sprayed some silicone and sealed with rubber and that fixed it. maybe 2 weeks ago another very annoying rattle developed which you can hear when the ICE start and you accelerate...and now you can hear it even when you are cruising on the hwy. I thought it is from the dash again but you will see that even without the dash it is still there. I have no idea where to look for. Will upload 2 videos and you can see. In one of the videos I am in my garage with parking brake on and pressing the gas pedal to the level where I can hear it( yes I know it is not safe). In the other video I am driving..

    It is a very specific metalic rattle to me..




     
  2. xpcman

    xpcman Senior Member

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    Every 2010 has a dozen or so rattles. I hope they do better with the gen IVs
     
  3. nedim

    nedim Junior Member

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    Yes. Anyone with an idea ?
     
  4. phoenixgreg

    phoenixgreg Senior member

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    Wow, I'm impressed with your ability to tear down the dash. I thought I was the only one! Anyway, someone here posted a hint that the metal tube that runs across the dash (a stabilizer and crash protection) was not correctly attached to the brackets on the right/left inner fender. The dealer discovered some bolts that had come loose that were transfering a rattle from one side to the other. As long as your dash is out, see if either of the brackets holding that metal tube is loose. I think the dealer added some better locking washers and that solved the member's problem.

    On a separate note, do you get an airbag error when you drive your car without the dashplate on? As long as your this far down in the dash, when you put it back together, be sure to add some sticky-backed felt (black) to any plastic surfaces that come in contact with each other. That is one of the main problems on the '10s and '11s for ticks and rattles. I put some felt between where the main dashplate connects to the firewall and that seem to have helped too. Good luck...rattle-chasing is a real challenge on a Prius.
     
    #4 phoenixgreg, Feb 1, 2015
    Last edited: Feb 1, 2015
  5. northwichita

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    Nedim--if this rattle is also inside the car, just push around the area where you hear the noise, having a friend drive could also help here.
     
  6. nedim

    nedim Junior Member

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    I did saw that metal bar...but everything is super tight... To me it sounds like it is coming from under the white metal welding right under the small side window, but there is no way you can get there since it is all welded...I gave up for now, but if someone have any ideas like you I will be more than happy to hear. This is my uber Prius so that is why I can't drive without the dash.. if it was just for commuting I wouldn't care driving without the dash hoping with time and different tries eventually find it..But like I said I will tear it again for no time :p

    I think this is where the noise is coming from.
    IMG_20150201_121358551.jpg


    Thanks phoenixgreg.

    It is inside the car but without the dash there aren't many things to push... I did try when someone else was driving but they are not as good as me simulating the noise.

    Thanks northwichita.
     
    #6 nedim, Feb 1, 2015
    Last edited: Feb 1, 2015
  7. phoenixgreg

    phoenixgreg Senior member

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    nedim, since it's a 2010, you might have the right fender clip problem most of us had. It almost sounds like a buzzing rattle when you accelarate and it's comes from the right A pillar or just under the small right front window? If so, reply and I'll post a link to my solution.
     
  8. nedim

    nedim Junior Member

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    That would be awesome
     
  9. phoenixgreg

    phoenixgreg Senior member

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    nedim, before trying my solution, take your car for a drive with the HSI on (in the MID area, the PWR/ECO/CHG display). Then, accelarate your car to the 3/4 mark or 1/2 way into the second ECO zone. Once there, back of the trottle a bit and accelarate again staying right around the 3/4 zone. If you hear the buzzing/rattle, you've got the defective fender clip problem.
    I posted this solution years ago and my noise is gone for good. What I suggest is using small rags such as several worn out socks and keep packing them in the "rabbit holes" (see picture) to stop the vibrating clip. Be careful not to distort the fender area outside beneath the small front window. There are 2 "rabbit holes" - one beneath the small window and the insides of the A pillar itself. Both are visible with a bright flashlight with the hood up.
    Right fender area RPM rattle/buzz - FIXED | PriusChat
     
  10. nedim

    nedim Junior Member

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    Tried it .... did not work.. is it easy to remove the fender ? Is there anywhere a picture of the clip that gives us the trouble ?

    I did the test you asked me to...yes it is at certain rpm.
     
  11. phoenixgreg

    phoenixgreg Senior member

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    I'm not sure anyone has taken a picture of the defective clip - and if your noise is not a "buzzing rattle" at certain RPMs, it could be some other problem. If you can get a passenger to listen right at the A pillar while you are at RPM, it would confirm it. Short of removing the fender, which is a huge job, I don't think there's another solution. Part of the rag-stuffing method is to prevent engine noise and vibration from getting to clip. I packed rags so you could actually see them from under the hood (picture).
    Also, this is another similar problem/fix:
    Right fender area RPM rattle/buzz - FIXED | PriusChat
     
    #11 phoenixgreg, Feb 1, 2015
    Last edited: Feb 1, 2015
  12. nedim

    nedim Junior Member

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    It is a buzzing rattle. I will try to stuff more rags or stuff them differently.

    The clip in question what is its job ? What is it holding to what ?
     
  13. phoenixgreg

    phoenixgreg Senior member

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    I'm not really sure, but I think the clip holds the fender to the body. As to where it is exactly, I can only guess it's just below the small right front window (as you show in your diagram - circled). I just looked at the other end of that area by opening the passenger door and prodding just behind where the upper hinge meets the body. I see and was able to wiggle some piece of black plastic back there. I wonder if that is part of the problem?
     
  14. Former Member 68813

    Former Member 68813 Senior Member

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    just a thought, how about spraying expandable foam?
     
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