I recently purchased a used 2007 Mercedes C230 with 18K miles for a great price, not knowing the the outrageous maintenance cost. Shame on me. This is my first MB. My investment doesn't justify spending $500 for an oil change. Are these cars that sensitive that they require all of the checks and inspections? Anyway, I got my oil changed at a reputable service center using Mobile 1 snythetic and MB filters for $88. I've searched the web on how to reset the maintenance indicator and nothing works. I've gotten to the voltage screen, but there is not a maintenance screen in this area. Anyone have any ideas besides getting the car serviced by Mercedes and paying $500?