Anti-theft System problems

Jason>
Did you have a new key cut at all? If there was a new key cut it could have have been coded wrong, if not it is the ring around the ignition cylinder, if you try 3 times and it still senses no correct code then it will go into lock mode, what i would do is reset the computer and then try a different key and see what happens, what caused it to start doing this did you have and work done to the car? like a aftermarket security system or remote start? good luck let me know if i can help more, pm me cause i do not read this forum often Dan