Here's the WIS doc:
http://benzbits.com/r230/Remove_install front seat.pdf
I really doubt you are going to be able to get to the rear bolts with the seat all the way back, but if you have a low-profile Torx socket (like the Max Axess) you just might be able to do it if you can even get your hand back there.
Have you checked fuses? #27 on the driver's side SAM under the hood is for the power seat controller.
http://benzbits.com/r230/Remove_install front seat.pdf
I really doubt you are going to be able to get to the rear bolts with the seat all the way back, but if you have a low-profile Torx socket (like the Max Axess) you just might be able to do it if you can even get your hand back there.
Have you checked fuses? #27 on the driver's side SAM under the hood is for the power seat controller.