Better just get it on over to the dealer. It's not uncommon for the first run of a completely new model to have bugs. When I was at the dealer, we had two W220 S-Class sedans come back fairly quickly. On one the front air suspension valve went and on the other the Blaupunkt navigation unit went dead. Had that not been under warranty, it would have cost about $8,000 to replace!! Mercedes has been very good about supplying parts for the new S-Class, and the training on the car's systems was covered quite well. Good luck! Sorry to hear of your problems!
Precision Motorcars, Cincinnati, Ohio
'67 250SE Cabriolet
'79 6.9 (SOLD)
'93 300E 2.8