It will go back down onto the glass if you simply push. It takes a pretty good push; I went through the same worries when I first pulled mine up to clean underneath, thought it was gonna break. I finally took courage, pushed hard, and it went back down. I'm used to it now but the first time is a little frightening.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970