W204 Vibration/reverberation from sunroof...????

[billbill]

Hello,

I have a 2010 W204 c350cdi with a panoramic sunroof. I have noticed over the past week or two quite a bad vibration that seems to shudder through the whole cabin at certain times.

If I'm doing 22/23 mph and the revs are low (1000-1200) and I accelerate slowly the vibration seems to come from the area of headlining between the two glass panels where the two blinds are housed. The reverberation goes once the revs have picked up. My instinct is there is something loose in the blinds or the headlining needs packing out a bit. The noise is starting to drive me a bit crazy.

Has anyone heard of or experienced this problem? and if so what was the resolution??

Thanks

Bill

 

[Ted]

If it is with the roof open, drop the rear windows an inch or two.

 

[billbill]

Hi, no the noise is not the dreadful rear window open thrum, it definately comes from the piece of trim in between the two glass panels. If I hold it when the noise is being made it stops. Thanks