Solved the shorting issue....saved me a couple hundred dollars as the coil short caused a P0455 code to show up as well....that can be big $.

I found out about this website thanks to Alex from Legit Street Cars on youtube. I got an misfire error code so I talked to one of my friends that works for Drivers edge and he told me to change the ignition coil, but he suggested to do all of them with spark plugs as well. I purchase the 8 ignition coils for my 2007 W221 Mercedes Benz S550 and installed them myself. The engine runs great and I even feel it more responsive! Thanks FCP Euro