The first step in recalling any codes is to turn the key on with the engine off. Clear all present messages such as Change Oil Soon or Hatch/Door Ajar by pressing the Reset button. Then hold the Options button and hit the Fuel button four times. This will put the automobile into the Automatic Sequencing Mode. If at any point you get weak in the knees or have to end the session, you can simply turn off the key and it will shut down the scanning process and return to normal operating mode.