This will only work if you have 2 already programed keys. The 1st 2 steps must be completed in 15 seconds or less. Step 1. You take your 1st key, put it in the ignition, turn to on but do not start the engine. Start counting when the dash lights up. I counted to 5. Turn the key off and remove the key. Keep counting during the whole process. Step 2. Insert your 2nd key, you should be around 10 seconds at this point, turn on but do not start the engine. Leave the key inserted until your security light starts to flash. I waited 5 seconds after I saw the light flashing. Turn to off and remove the key. Step 3. Insert your new key, turn to on but do not start the engine. If successful, the security light will stop flashing. I waited 5 seconds after the light stopped flashing. Turn the key to the off position and remove. Now take the new key, reinsert in the ignition and turn the engine on. It took me longer to wright this than it did to program my new key! Hope this helps.