I just baught a 1987 300E and its my first Mercedes, so I have alot to learn about these vehicles, there are a few things that do not work like the Cruise control,A/C, driver side head rest dont go up or down, just last night I took my son to the store and he was reclining the seat all the way back now it wont go back up. Is there a fuse for the seat or could it be the control?

thanks
flrydr