Ford Repair Questions? Ask a Mechanic for Answers ASAP
What you are describing sounds like a concern with the security key system. Your key has a chip that sends out a signal to a device in the dash that then tells the computer that it's ok to start. If the chip in the key gets weak sometimes it takes a few minutes of waiting or a few tries of turning the key on and off to get it to pick up the signal.
Do you have a spare key you could try when it's acting up?