The brake shift interlock solenoid is engaged on most vehicles to prevent the gearshift lever from being moved out of park without first depressing the brake pedal.
- To release the gearshift lever, the brake pedal must be depressed and the brake light switch actuated.
- This sends a signal to the brake shift interlock solenoid, which then disengages the locking mechanism and allows the gearshift lever to be moved.
However, if the brake shift interlock solenoid is faulty, the locking mechanism will not be disengaged, even when the brake pedal is depressed. This will effectively prevent the gearshift lever from being moved out of park.
Before condemning the brake shift interlock as the cause of a stuck shifter, it should first be tested to confirm its function.
1. Turn the ignition to the "On" position without starting the engine.
2. Press and hold the brake pedal.
3. Try to move the gearshift lever out of park.
4. If the gearshift lever moves out of gear without resistance, the brake shift interlock solenoid is functioning properly.
5. If the gearshift lever is still stuck in park, the brake shift interlock solenoid is likely faulty and should be replaced.
Replacing a faulty brake shift interlock solenoid is a straightforward procedure. The solenoid is typically mounted on the steering column and can be accessed through the lower dash.
Before attempting to replace the brake shift interlock solenoid, you should disconnect the battery to prevent any electrical accidents.
Here's a summary of a repair procedure:
---
1. Disconnect the battery.
2. Locate the brake shift interlock solenoid.
3. Disconnect the electrical connector.
4. Remove the mounting bolts.
5. Pull the solenoid out of the steering column housing.
6. Inspect the solenoid for any damage.
7. If the solenoid is damaged, replace it.
8. Reinstall the solenoid in the steering column housing.
9. Reinstall the mounting bolts.
10. Reinstall the electrical connector.
11. Reconnect the battery.
12. Test the brake shift interlock solenoid to ensure that it is working properly.
---
Note: On Crown Victorias, Ford's official repair procedure for a gearshift stuck in Park also instructs technicians to check wiring and components from the shift lever assembly to the shifter cable bracket.
