I'll see if I can get a picture up of the driver's side switch. There is one "pivot" piece sticking out that would be for the seat back switch, but I don't see one for the lower seat switch sticking out. It might have been broken, it's flush with the plastic plate. I can stick my finger in there and move the seat o.k.

The passenger side has both switches still attached, but the seat back switch is broken, it just spins on the pivot piece.

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1994 C280 204k miles