Recently acquired a 2007 Expedition XLT. Aren't the rear power door locks supposed to unlock automatically when you put the SUV in park, and/or open the drivers door? The child switch on both doors have been set to the open position; I've reprogrammed the locks manually per the manual repeatedly; but, the rear doors won't unlock with the key off, or the driver door opened. What's up with that? What is the norm?