I just loosen the speedo cable off the plastic panel under the carpet, and wiggle mine out, reach behind and unscrew the speedo cable formt yhe cluster, remove the cables and voila. its out. takes me less than 10 minutes.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.