How do you reset oil message on 2009 Subaru impreza?

To reset the oil change reminder on a 2009 Subaru Impreza, first turn the ignition to the "ON" position without starting the engine. Then, press the gas pedal three times within 10 seconds. After that, turn the ignition off and back on; the oil change message should be reset. If it does not reset, repeat the process.