The built-in factory trailer brake controller should be included in the Tow Package on every vehicle Ford offers the Tow Package. For example, the Explorer can haul 5,000 pounds with the tow package. That is a lot of weight to slow down in an emergency situation without having trailer brakes connected. Even if it's not included in the Tow Package, it should at least be an option. It is a vital option on the F-150 and Super Duty, and would be beneficial to the Escape, Explorer, Edge, Expedition and Flex also.