How do i reset the service mileage on a 2009 Mercedes Benz C180?

To reset the service mileage on a 2009 Mercedes-Benz C180, turn the ignition to the “ON” position without starting the engine. Use the steering wheel buttons to navigate to the "Service" menu on the display. Select "Assyst Plus," then choose "Full Service" or "Service A/B," depending on what you need to reset. Confirm the reset when prompted, and your service mileage should be updated.