Never had Xenons before. Mine jiggle when I hit a big bump. Is that normal or is something loose?

Check to see if your housing is loose. I'm taking mine in for the same problem. I have a broken bracket in mine. A body shop will fix it for close to nothing.

Sure that's not just the autoleveling feature?

I just purchased my first Audi...a 2001 A6 4.2. I also had a bit of a "jiggle" in the Xenon lights. After close inspection, I found that ALL THREE mounting brackets were completely destroyed. The light worked fine, but it was hanging on by not much more than a prayer. Hmmmm....not good.

I used some metal strapping to secure the front side (used very short pieces to construct the brace) and a mending brace to create a mounting bracket on the lower rear side of the light. Now I have a non-jiggler and everyone is happy.

Check the mounting brackets....you may have loose or broken hardware.

Aaron

OK- Thanks Aaron. I'll take a look.