How to fix automatic headlamp function on Escape Limited?

What is your question?

For some time, it was taking longer and longer for the headlamps to turn on automatically. Now they won't turn on at all, even by switching the function on and off at the rear view mirror. I must manually turn lights on with the headlamp switch at the steering column. Is there a bad light sensor somewhere, like in the rear view mirror, that I can replace? Occurs all the time.