Sorry Im new to Mercedes What is a rheostat???
For the Sun roof the rails I am assuming thats what it is is rusted and the Headliner is coming down there.
The radio is an After market radio I think I may have found the problem The Antenna motor located in the trunk is not even where it is suppose to be It is lying in the trunk so that may be a ground right?
Sorry if I am Sounding a little stupid but this is my first Mercedes and Im a girl doing the work myself.
Thanks for all the help.
Lind