Brake Shift Interlock Actuator (BSIA) System
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
The Brake Shift Interlock Actuator (BSIA) system consists of:
- a BSIA.
- A transmission shift selector position insert, which bolts to the steering column and secures the BSIA.
- A contained PARK indicator switch.
- electrical circuits to supply power to unlock the BSIA.
The BSIA locks the selector lever in PARK:
- when the ignition switch lock cylinder is in the LOCK position.
- with the ignition switch lock cylinder in the RUN position and the brake pedal released.
The BSIA releases the selector lever:
- with the ignition switch lock cylinder in the RUN position and the brake pedal applied.