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Headliner and Sunroof

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I have a 2004 C4S with the same issue. It is really annoying to look in your rear-view mirror to see the headliner blowing up and down (good inch or two). This is an engineering oversight in my opinion as the headliner should be streteched tighter or another bracket installed underneath to hold it in place.

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Exactly, I see the rear edge of the headliner vibrating in the mirror.

I imagine this is a design issue, as the sunroof probably lays inside the headliner, instead of being in an enclosure that would contain the airflow.

Perhaps Loren can shed more light into this.

Edited by ADias
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I don't see any TSBs on this and I don't think I have ever noticed mine vibrating (but it might). There is a wind/water deflector that pops up when the sunroof is opened. I would make sure that it is popping up.

Loren: Can you please check yours? If I touch the liner behind me, I feel it puffing, being filled by air.

My wind deflector pops up, but not much. How much should it raise?


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