Flight Test

Do the newer satellite recievers work in the 2006 and earlier cars as long as they are on a MOST network? I have a 2006 S class and I see several of the 2008 and up recievers for sale for a good price.

There are several part numbers out there that seem to change depending what generation they are.

These are newer (2007+) S class recievers that I would like to see if they work in a 2006.

A171 870 15 89 Satellite Radio

A221 820 77 89


Any ideas? Has anyone tried it?

Thank you