You have to lay the seat back as far forward as possible to access the two phillips head screws at the bottom of the panel. The back will pull outward at the bottom, then slide it down out of the clips at the top. That will get you inside.
Next you'll need a 27mm socket, and a short extension. I found the extension was neccessary to get the ratchet out away from the springs. One 27 mm nut and star washer are all that hold the arm rest in.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.