The power seats controls on the driver side on my 88' 260E has some issues, sometimes it will work fine, but sometimes it does'nt work unless the door is open. And recently while starting the car and adjusting the seats, smoke came out of the controls for about 8-10 scs, so I turned off the engine, afterwards the car won't start anymore. What have caused this problem, any inputs? Thanks!

you probably have short in the wiring in the door that goes from the seat switch through the hinge to the body of the car - i would look there first - seperate all the wires and try to start it - if they melted and fused, thtas probably causing it not to start