Ok my 95 c280 I took the inside locks and all apart to repair a dent.Well It was more than I could handle so it went to the body shop well the dents fixed.Ok but all the door locks work with the key outside except with the central dash switch my door does not work all the others work.So I took the door panel off found a screw missing compaired with the other side by the yellow vacum line in the door, replaced it,screw was inside door frame.Now the handle is better but the central switch does not work at all what did I do wrong. I checked everything twice I'm missing something.Thanks