Brake Shift Interlock System
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The brake shift interlock system prevents moving the selector lever from the PARK position until the brake pedal is applied. The brake shift interlock system consists of a Brake Shift Interlock Actuator (BSIA) mounted on the lower right side of the steering column. When the ignition switch is in the RUN position and the selector lever is in PARK, the BSIA is energized when the brake pedal is applied. This will allow the selector lever to be moved from the PARK position.