I have had this happen on a couple of occasions. I narrowed the causation to be the distance I am from the truck when I try to remote start. If it is too far, I am guessing the system "locks" you out because it did not get the correct signal (did not get the full 1 lock plus two start). In any event, it always cleared for me after I started the truck with the key. Start the truck with the key; shut it down; and then try remote start closer to the vehicle. I have noticed that some friends after market remote starts have twice the distance as Ford's factory remote start. Good luck.