Streamliner

I am getting a sharp creaking or popping noise from the rear shelf/window area of my 2015 S550 sedan. Might be coming from Pano Roof? It is intermittent, but happening more often now. Always does it first thing in the morning when I back out of the garage. Seems to be somewhat connected to cooler temperatures. Sometimes get it when pulling into a parking lot ramp or other uneven road condition. Does anyone else have this?

pdeacon

Haven't experienced anything like that. Of course, one of the advantages of getting older is that I don't hear as well. So I can run 20" wheels and open the sunroof without any negative comfort repercussions. Just as a long shot; does your car have that push down storage bin in the trunk? Maybe it isn't secure in its track??? Just a wild guess.