How do you reset the service light on a Mercedes b200 cdi?

To reset the service light on a Mercedes B200 CDI, first, turn the ignition key to the "ON" position without starting the engine. Press the gas pedal three times within ten seconds. Then, turn the ignition off and back on to ensure the service light is reset. For some models, you might need to navigate through the menu on the dashboard display to find the service reset option.