MB went from FSS to a fixed miles/time service interval. I think it's 13K miles/1 year on your 2006, though they later went to 10K/1 year with no apparent change to the mechanicals, oils, etc. Your owners manual will describe it, and the info display has the same countdown readout as the 210 cars - just use the up/down arrow buttons from the main display. Maybe the good Doc will chime in with an opinion on what's necessary to keep the engine happy (Is that an M272...can't remember the designation)?

You can google up recommendations on how to change brake components yourself w/SBC. Basically, you need to be very, very certain the SBC pump does not activate while you are working on the car. You can unplug the electrical harness at the SBC pump, or close and lock the doors. Other than making sure SBC doesn't activate, it's a normal brake job - the calipers and such are quite conventional.

You do need to pay a shop with the correct service equipment to change the brake fluid; I don't believe there is any way to effectively DIY a brake flush with SBC.