To reset the 2007 Saturn Aura change oil light, please follow these instructions:
1. Turn the ignition to run (one position before starting engine). 2. With the CHANGE OIL SOON message displayed, press either of the DIC buttons to clear the CHANGE OIL SOON message. 3. Display OIL LIFE RESET on the DIC using (square button). 4. Press and hold the ENTER (arrow button) button for at least 1 second. An ACKNOWLEDGED display message will appear for 3 seconds or until the next button is pressed. This will tell you the system has been reset. 5. Turn the ignition off and then start the engine to verify the indicator has been reset.