The oil life monitor should NOT be reset if you top off your oil. It should only be reset with the oil is CHANGED.
How to Reset the "Oil Life" indicator
After an oil change, you need to reset the oil life indicator so that you know when the next change is due. Here is how to do that.
Turn the ignition on, but make sure the engine is off.
Press the "Trip" button on the DIC so that it displays "OIL LIFE" percentage.
Press and hold the "Reset" button for two seconds. "OIL LIFE REMAIN 100%" should appear on the display.