How do you reset service on a Mercedes 2009 c63?

to reset the service light on your W204 C-Class, including C63 AMG:

• With the vehicle off, turn the key to position "1" (make sure mileage indicator is showing)
• Depresss the telephone pick-up button on the steering wheel and keep it held
• Immediately, depress the OK button on the steering wheel while still holding the pick-up button and keep them both held for at least 5 seconds
• The dash display will change to a new menu
• Use the menu buttons on the steering wheel to navigate various menus > Go to Assist Plus and follow directions to reset your service lights