This just started happening about a month ago. I have to keep pounding the brake before it will respond for me to go from park to drive or reverse. Sometimes I can get in and it will work with no problems.
I have problems shifting from park. I have to keep pressing the brake. on 2006 Lincoln Zephyr
Have someone watch your brake lights .With key on,engine off try holding your foot on the brake pedal,make sure your brake lights are on and try to shift from park. If you have no brake lights ,check the brake pedal position switch.If the pcm (computer) doesn't see your foot on the brakes it prevents you from taking it out of park. A good safety feature.also could be the PCM or the 'shift lock' solenoid all parts of the same system.may require scan tool or other test equipment and wiring/circuit info.