How do you reset service light on mercedez 2008 c350?

To reset the service light on a 2008 Mercedes C350, turn the ignition to the "On" position without starting the engine. Press the gas pedal three times and then turn the ignition off. When you turn the ignition back on, the service light should be reset. If it doesn't reset, you may need to repeat the process or consult the owner's manual for further instructions.