Since your new I will give you a get out of jail free pass. But you should really attempt to use the search function before you create a post. There is a thread that covers this still on the main page. Anyway, here is a link to a .pdf that tells you how to reset most Mercedes models. Find the one applicable to yours:
Thanks for the reply but that did not work. I spent at least an hour trying to reset it and did search the entire site as well as the www before I posted. Seems like this procedure is valid up to 2009??? Controls look the same but I could not get to work. Service was completed 700 miles late at 10,700. Any help is hugely appreciated!
Issue resolved! Searched W212 thread since these two controls are the same. PDF there has similar but more specific instructions. Done in one minute, saved $50. Had oil changed by MB dealership for $130 in Honolulu and bypassed all the other stuff I could do on my own.