Hi, Kels. Are the bulbs led or standard? If they are a standard bulb, they have 2 filaments in them. 1 for tail and 1 for brake. If that isn't it, it is probably the brake light switch behind the brake pedal.
Given the differences between Ford's quality and Thor's quality in general I would suspect that it is not the switch at the brake pedal (that would most likely be Ford's responsibility).
Thinking on this further: Have you tried the turn signals or the emergency flashers? If it doesn't flash for either of those I would suspect the wiring to the lights.
Another way to check the brake switch at the pedal is to get an OBD-II interface and watch for the brake switch input (On Ford's I believe its called "BOO"). Since the switch goes to a module then the signal is sent out on the CAN bus.
I just went out and pressed my brake pedal. You should hear a definite clicking noise from a relay in the fuse panel. Another way you could check is hook up a boat or utility trailer and see if the brake lights work.