Good evening, R129 SL320 without seat memory Bauj. 1994 After the height adjustment of the headrest to the right (passenger side) did not work for a few weeks now, the entire seat adjustment has now also failed. However, during the ride I noticed from the right coming noises, and the seat has pushed from itself completely to the rear and the backrest turned vertically, also the headrest has moved upwards. sometimes while driving sporadically up, and I think the seat has moved a little forward Is apparently a wobble contact or corrosion, ECU But where ?? Who knows advice ?? Greetings Karl.