I have a 99 S80 T6 with a moon roof. YesterdayI notice a rattling noise like something was hitting the glass. When I pulled back the sun shade. The support bar on the back of the glass was hanging. I thought that their mite be clips to hold it. But when I was looking the whole bar came off. It looks like it was glued with 5 or 6 rubber tips to the glass. What is the best we to reglue the support bar.

Good luck finding something to hold it on.

Most people just throw it away.

Does it need that support. What is it for.

It is to help support the glass some.
Half of the cars out there are missing them.