
I'm assuming they are there to help protect the rear washer line if someone bumps the headliner. In any event, two of my "cones" were no longer cemented, meaning that they could be banging against the metal roof. I've glued them back down, although I'm not sure if it will hold. If it doesn't, I'll either try gluing them down again or removing the 2 loose ones. And if my noise ends up not being caused by the flapping cones, then I'll have to remove most of the headliner (PITA) to see what else could be causing the noise. I'm fairly confident it is related to the cones though, as they are in the exact spot the noise seems to come from.
Slightly more close up:
