To reset the 2004 Saturn Ion oil life, please follow these instructions:

1. Turn the ignition to run (one position before starting engine).
2. Press and release the trip/reset button until the OIL LIFE message is displayed.
3. Then press and hold the trip/reset button until a chime sounds 5 times, and RESET is displayed in the message centre. When the system is reset, the odometer will again be displayed in the message centre.
4. Turn the ignition off and then start the engine to verify the indicator has been reset.