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 MANUALSFORD2012MUSTANG V8-5.4L SCREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESHIFT INTERLOCKSERVICE AND REPAIRPROCEDURES
2012 Ford Mustang V8-5.4L SC
Procedures
2012 Ford Mustang V8-5.4L SCSECTION Procedures
Brake Shift Interlock Override
NOTE: If it is necessary to use the Brake Shift Interlock Actuator (BSIA) override procedure to move the selector lever out of the PARK position, it is possible that a fuse has blown and the brake lights are not operational. Before driving the vehicle, verify that the brake lights are working.
This vehicle is equipped with a BSIA (Brake Shift Interlock Actuator) feature that prevents the selector lever from being moved out of the PARK position when the ignition is in the ON position until the brake pedal is applied.
If the selector lever cannot be moved out of the PARK position when the ignition is in the ON position and the brake pedal is applied:
1. Apply the park brake and remove the ignition key.
2. Remove the access panel.
3. Using a suitable tool, push forward on the brake shift interlock override mechanism on the selector lever assembly, apply the brake pedal, press the button on the selector lever knob and move the selector lever into NEUTRAL.
4. Insert the ignition key into the ignition and start the vehicle.
5. Install the access panel.
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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.