how to remove the driver seat cushion 2006 ml350 w164

Don't think it is the just the cushion. In the seat there are plenty of high tech components, and maybe one of them is displaced . Does it feel like a wire and is it around the seam of the upholstery? There is a steel wire holding the seams in place, and it may stickout. But removing the seat and take it apart is a biiiiigger deal. I would see the dealer and have him do it for you, before you break one of the high tech components in the seat.