How do you reset oil service light after oil change on 2003 mini cooper?

To reset the oil service light on a 2003 Mini Cooper after an oil change, turn the ignition to the "On" position without starting the engine. Press and hold the trip reset button on the speedometer until the oil service light starts to blink. Once it blinks, release the button and press it again until the light goes out. This indicates that the oil service light has been successfully reset.