I’m having trouble with my keyless entry. I’ve read ton of post on the subject but what’s odd is the remote works when I sit inside the car but not external. I’ve stood at the driver side window and can not get the doors to unlock. I’ve swapped batteries in two different remotes and went through the steps of programming a new remote. Is there anything I’m missing that I should try? It’s a 2005 mustang gt if that helps.