You can arrange a b service approximately one year after an a service, and usually every 2 years subsequently, depending on the average number of miles you drive per year. This includes and oil and filter change, along with a comprehensive inspection. Understanding The Mercedes-benz Active Service System Assyst Assyst Plus Assyst Fixed Intervals Service Indicator Lights Yourmechanic Advice The exact time is determined by the vehicle's flexible service system. Service b1 mercedes c300 . Press and hold the same button to view the service light, within 2 second turn key to position 2. Costs also depend on your vehicle. Press the button to show the service due light. The exact time is determined by the vehicle's flexible service system. I think the b1 is simply the b service: The average annual repair cost is $739 which means it has average ownership costs. Service b1 mercedes c300 cost. Oil change, tire rotation (if not staggered), brake fluid flush and comp...