Here are some additional tips that may help you troubleshoot the problem:
* Check the brake light switch. The brake light switch is located under the brake pedal. If the brake light switch is faulty, it will not send a signal to the shift interlock solenoid, which will prevent the car from being shifted out of park.
* Check the shift interlock solenoid. The shift interlock solenoid is located on the transmission. If the shift interlock solenoid is faulty, it will not lock the transmission in park, which will allow the car to be shifted out of park without the brake pedal being depressed.
* Check the wiring in the system. The wiring in the shift interlock system can become damaged or corroded over time, which can also cause the system to malfunction. If you find any damaged or corroded wiring, it is important to have it repaired by a qualified mechanic.
If you are unable to troubleshoot the problem yourself, it is important to have your car diagnosed and repaired by a qualified mechanic.