Remote flashes at will and the rear lights flash, remote will not unlock doors

Hello, The ignition, key fob, and door locks have two things in common. They are all part of the anti-theft system, and they are all connected in some way or another through the body control module. This being said, the issue could lie in one of those systems, and you will certainly need diagnostic services to determine which. I don't think the anti-theft system would be the cause, except that the wireless control module is integrated into the anti-theft system, and controls the actions of the vehicle when the key fob is pressed. This will be an interesting diagnosis, so please share if you feel like.