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      03-03-2011, 04:57 AM   #21
e46m3to335i
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Drives: 2015 F80 M3
Join Date: Feb 2010
Location: Fort Bragg, NC

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Quote:
Originally Posted by mtnova View Post
The sound described seems like one that I've isolated to be in the area just behind driver/passenger's head within the roofliner, where the moonroof glass retracts. I noticed the sound occurs sometimes with the moonroof sunshade in either position and when going over road bumps in the 25-35 mph range. If you gently strike the roofliner with the palm of your hand you can sometimes replicate the noise.
I have the EXACT same sound in the same location. Word for word. I will be removing the light assembly back there this weekend to see if I can find any loose cables or what ever is flopping around that area in the headliner.

I found it by having my GF ride in the back so she could really listen and look for where the noise was coming from. She pin pointed it on the drivers side of the moon roof about 6 inches from the sun roof and about a foot behind the drivers seat. She also pushed lighty on the headliner rapidily in the area she heard it come from and it duplicated the sound exactly it makes when I would drive over bumps at 30-40 MPH.

Hope this helps some folks pin point any rattles or knocks they are hearign that they cant find

Nick
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