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Air Turbulence Noise at Windows

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Air Turbulence Noise at Windows

 
Old 04-15-2010, 04:41 PM
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Air Turbulence Noise at Windows

I just discovered a new concern. It's 80 degrees here today, and driving above 40mph, it sounded like air was rushing in through an open window. All doors and windows were actually fully closed. When I got home and looked at the outside, I ran my finger along the underside of the black strip at the top of each window, just under the chrome molding, and 3 of 4 of them were warped with at least one or two "waves" standing away from the glass. I'm going to the dealer tomorrow, but it seems likely that this is the source of the noise. Anyone else have this condition?
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Old 04-15-2010, 07:37 PM
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Pictures of where exactly?
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Old 04-15-2010, 07:42 PM
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Here's the worst one. In the foreground is the B-pillar and you're looking at the top of the left rear door. Notice how the molding along the top bows out? I have this on 3 of four doors.
Attached Thumbnails Air Turbulence Noise at Windows-dsc00077.jpg  
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Old 04-15-2010, 11:27 PM
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Originally Posted by Sportstick View Post


Here's the worst one. In the foreground is the B-pillar and you're looking at the top of the left rear door. Notice how the molding along the top bows out? I have this on 3 of four doors.
I have the same thing... someone once told me it was because of our mirrors? i dunno but its annoying
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Old 04-16-2010, 09:23 AM
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Originally Posted by ShaiMalka View Post
I have the same thing... someone once told me it was because of our mirrors? i dunno but its annoying

Someone may have said air turbulence noise may be related the mirrors' aerodynamics, but the mirror has no relation to the warping moldings at the top of the door. The new wind noise I hear is at the door top.

I took the car to the dealer this morning. They took one look and ordered replacement parts.
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Old 04-16-2010, 10:47 PM
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Originally Posted by Sportstick View Post
Someone may have said air turbulence noise may be related the mirrors' aerodynamics, but the mirror has no relation to the warping moldings at the top of the door. The new wind noise I hear is at the door top.

I took the car to the dealer this morning. They took one look and ordered replacement parts.
Good to know, let us know if it imporves or eliminates the issue
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Old 04-17-2010, 09:15 AM
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Originally Posted by 2nice4me View Post
Good to know, let us know if it imporves or eliminates the issue
Will do, but everyone should just run their fingers under that top strip along the length of the door. I've never seen a material problem which only affected one car.
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Old 04-19-2010, 10:49 AM
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The picture you uploaded was unable to load for me, so I can't see where you are talking about. But I too hear wind noise when all my windows and doors are fully closed from my left ear. It sounds like it is coming from behind me at the passenger window/door, but I have not located from where yet.
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Old 04-19-2010, 10:42 PM
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Originally Posted by Sportstick View Post
Will do, but everyone should just run their fingers under that top strip along the length of the door. I've never seen a material problem which only affected one car.
I checked mine but don't have that issue. Having said that, I have road noise as well where i find myself pulling up on the window controls just to make sure I don't have a "gap" in the windows
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Old 04-20-2010, 07:22 PM
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Originally Posted by jctevere View Post
The picture you uploaded was unable to load for me, so I can't see where you are talking about. But I too hear wind noise when all my windows and doors are fully closed from my left ear. It sounds like it is coming from behind me at the passenger window/door, but I have not located from where yet.

O.K.......stand at the side of your car looking directly at the side windows. There is a black rubber strip which runs along the top of the window. Run your finger under that strip, right where the glass meets it. The gap should be tight and uniform. Mine is warped and has bulges on 3 of the 4 windows.
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Old 04-21-2010, 07:47 AM
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Originally Posted by 2nice4me View Post
I checked mine but don't have that issue. Having said that, I have road noise as well where i find myself pulling up on the window controls just to make sure I don't have a "gap" in the windows
My commute has kept me off the freeways for the most part but this past weekend I did a short trip and the road noise does seem way to loud on this car at higher speeds.

Time to consider dynomat insulation or look at another higher end model and see how they are as the noise is annoying.
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Old 04-21-2010, 10:01 AM
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that happed to my windshield.
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Old 04-21-2010, 10:30 AM
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i do check my windows to c if they r close and they are and still hear the noise from outside. what should we do go to the dealership n let them know?
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Old 04-21-2010, 01:27 PM
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i hate to say that i dont like my c anymore. keeps bring me troubles...
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Old 05-04-2010, 01:20 PM
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Just back from dealer....took 4 hours to replace those top moldings on 3 doors where they had warped. The moldings apparently wrap much of the door and require substantial door dis-assembly. BUT, the results are great. The wind noise is almost gone, except for a little which is probably our older, larger side mirrors. Based on the difference, the old moldings were clearly defective.
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Old 05-04-2010, 05:17 PM
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Glad to hear you got it resolved, thanks for the update
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Old 05-04-2010, 06:10 PM
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Originally Posted by Sportstick View Post
Just back from dealer....took 4 hours to replace those top moldings on 3 doors where they had warped. The moldings apparently wrap much of the door and require substantial door dis-assembly. BUT, the results are great. The wind noise is almost gone, except for a little which is probably our older, larger side mirrors. Based on the difference, the old moldings were clearly defective.
you got that fix for free? mine molding are like that too
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Old 05-04-2010, 06:12 PM
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Originally Posted by clover168 View Post
you got that fix for free? mine molding are like that too
Absolutely a warranty issue....part deterioration defect.
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Old 05-05-2010, 03:25 AM
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Originally Posted by Sportstick View Post
Absolutely a warranty issue....part deterioration defect.
cool i will bring it to the dealership when im back from vacation
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Old 05-05-2010, 06:54 AM
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Sportstick,

I keep my 2008 C300 garaged almost all the time.

How does that compare to your situation.

I'm just wondering if the warpage was due to a lot of thermal recycling in a warm climate outdoors in direct sunlight.
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Old 05-05-2010, 09:28 AM
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Originally Posted by JimPap View Post
Sportstick,

I keep my 2008 C300 garaged almost all the time.

How does that compare to your situation.

I'm just wondering if the warpage was due to a lot of thermal recycling in a warm climate outdoors in direct sunlight.

That has me wondering as well. My car is garaged and the warpage occurred over a period when we were starting to transition out of winter to moderate early spring ambients, but nothing above 50s or 60s. The car never had a "heat soak" or prolonged static sun exposure. Given that warpage would be expected with expansion from heat, as the material pushes away from its design position, the fact that it happened under such mild changes seems to point to a material defect. It also only occurred on three of four doors...so far. I also thought about whether there was any interaction with window movement as the top of the glass is inserted or withdrawn from the top channel, but my rear windows are almost never cycled and my driver window is infrequently used. I am a ATC user. So, I cannot identify the true root cause.
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