Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007ESCAPE BASE, 2.3 Z, FWD, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1337 (AUTOMATIC TRANSMISSION - AUTOMATIC TRANSAXLE/TRANSMISSION - EXTERNAL CONTROLS)DESCRIPTION AND OPERATIONEXTERNAL CONTROLSBRAKE SHIFT INTERLOCK ACTUATOR (BSIA) SYSTEM
2007 Ford Escape Base, 2.3 Z, FWD, Automatic
Brake Shift Interlock Actuator (BSIA) System
2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION 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.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.