Thanks Fred, Door heater, that's what I thought. I measured the door side (plungers) and it comes up as 28.5 ohms. Doesn't sound shorted to me, but why in the world would they put part of the heating element in the door frame where the less knowledgeable (me) can fry body parts?? The heating element should be entirely in the door itself. Yes, that brown area is discolored and partially melted around the one 'button'. Still trying to get the wife to go full residential.