On my new 320 cls W219 oct,2006 with Comand APS and DVD rel.5.0 none of the upper key combination produces the engineering mode entry. I read something about this discussion and I found people that surely know the trick. So the trick is still there. I'm sure that the entry mode has NOT been removed, but only changed in a way similar to previuos ones. It's a matter of time... Anyone has suggestions?