So I had one key that would start my car as well as lock and unlock my doors. My secind key fob wouldn't do any of the above so I changed the batteries in it. It still wouldn't work after a new battery (second key fob). So I put the key that works in my ignition and quickly turned it between 0 and 2nd position very quickly about 10 times and a loud beep went off and I took my working key out and put my spare key in the ignition. Now my spare key will not start my car but will lock and unlock my doors. My first key/one that was working now will only start my car but won't unlock my doors or lock them. How do i reprogram my first key to lock and unlock my doors again????