Sat Radio w211
I believe they were pre wired for SAT because the SAT receivers were months late to be developed/shipped to assembly plant. My car was built as an early '04 in 11/2003, and the SAT radio wasn't available to install untill March 04.
http://www.mblink.mbusa.com/Inetapps...3?OpenDocument
Later on, SAT had to be factory ordered. Your dealer can look up the build of your car & tell you if its prewired.
There are aftermarket people on line who manufacture interfaces for your COMAND head unit to add Sirius-XM with full car integration. I can't think of them right now though.



