My son's 93 190e is having a trans. problem and I don't know where to start. He drove the car home the other day and was having no problems; when he went out a couple hours later the engine started but when he shifted to R or D nothing! Park does hold the car but all other gears act as if in neutral? I had the trans filter and fluid changed 4 or 5 months ago, it is at the proper level and doesn't smell burnt. I have made a few local calls and been told several things including "it sounds like a pump gone bad" another guy said that he thought it was an electric switch in the trans. had gone out and if one goes it knocks out all of them. I live 60 miles from the nearest MB dealer and before towing that far away I would like to have a better idea of what it might be. Thanks in advance for any help!