Audio Head Unit upgrade
I am looking for some help and advise with regards to my recently purchased E350 S212 Wagon (12/2009 model).
I have noticed that my navigation foes not recognize a lot of street's, so i am guessing it is outdated. Mercedes dealer quoted me just over £200 to check and update the car as well as the navigation if this was outdated. I have looked to try to figured out what stereo type i have, with not much luck. Could someone help me with how i can find this out. Also can newer versions of the head unit be straight swapped with my one? Should there be no additional updates that would be good for me?
Someone asked me what the message is i get on the screen when i boot up, to figure out what system i have, i get the following message: Warning: Do not let COMMAND distract you from the traffic situation.
Please could someone help me with what would be the best possible upgrades and easiest

Many thanks before hand



