It is the sensor in the transmission that reads the shifter position and transmits it to the transmission computer.
1st o2 senor is between exhaust. 2nd o2 sensor is under shifter
The shifter linkage might be jammed or disconnected. The shifting sensor, that detects if the brake is engaged, may be malfunctioning.
The transmission range sensor is mounted on the drivers side of the transmission. It is bolted around the shifter shaft as it comes out of the transmission.
The sensor is located on the side of the transmission, drivers side at the end of the column shifter linkage.
Sounds like either a sensor is dead or the button wire is broke.You need to press down on the brake first on many cars before you can switch the car out of park.
I have had the same problem with my '93 Impreza. The button on the automatic shifter will not depress to take it out of park. There is an override option in the owner's manual but I think the real problem is the brake light sensor. Ocassionaly, when I can actually get it out of park, you can hear a clicking noise when the brake petal is pressed, this is the shifter-lock releasing. It must be the sensor for the brake petal going bad.
Check the switch on the brake pedal that allows the transmission shifter to move into gear. If this switch/cable is broken the shifter doesn't know the brake is pressed so it will not allow shifter to move. It is a safety feature... a good one too.
It is located on top of the transmission underneath the thermostat. Where the shifter linkage attaches to the transmission.
It Is Mounted On The Left Side Of Your Transmission Where Your Shifter Cable Is Hooked Up......
The ignition switch on a 1996 Mercury Tracer might lock up and release only when the shifter is removed from park and then put in the park position again because the sensor is getting worn. This sensor lets the ignition know that the car is in park and it is safe to remove the key. Check the shift position sensor.
This is an possible indication of a transmission problem. Take it to a professional. More than likely its your speed sensor. Its on the transmission and is triangular in shape. I tried to reset the speed sensor, by pushing the Sport button on the gear shifter before starting the car, and that automatically resets the speed sensor, turn off engine after one minute of idle. Release button on the shifter and restart the car. Blinking should stop. If not go to your mechanic and replace speed sensor.