W210 rear ceiling light removal
 

Okay so don't laugh but I can't get the cover off of the rear dome light on my 1997 E420. I've applies a lot of force and it just won't pop off. So, what's the trick before I break the damn thing? Does it slide and THEN pull down or what??? (Sometimes German engineering and so damn frustrating)

on my 1999 210 it is a simple, firm pull down on the front edge of the light. the
back edge of the lamp housing has rigid plastic catch which hooks to the head-
liner. don't pull down there. the front edge has steel spring fingers which wedges
the edge of the headliner. that is where i needed to pull down.

so either strong finger/nails, or wide plastic trim tools (or spatula)