ok do these steps in this order... Put the key in the ignition and turn it 2 clicks, do not crank the engine..Then push and hold the little dial thing for the milage, hold this and do not let go...After 10 seconds, keep holding it and pull the key back and out of the ignition... at this time let go of the dial.... when you turn the car on next time the Check Engine light should not be on... You may have to try this a few times, but it works for sure b/c i've done it... Good Luck!