Mercury Repair Questions? Ask a Mechanic for Answers ASAP
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When the shifter will not release from Park, first check the brake lights and see if they are working when you step on the brake pedal.
If the lights are not working, first, check fuse #17 in the under-dash fuse block. If the fuse is good, the problem will be the Stop Lamp Switch. This switch controls the brake lights and also sends a signal to the shift interlock telling it to release when the brake pedal is depressed. The switch is located under the driver's side dash mounted to the top of the brake pedal arm. Inspect the electrical connector and wire harness for any loose, broken or damaged wires. Inspect the switch mount and contact points for any broken or misaligned parts. If ok, replacing the switch will solve the problem.
If the brake lights are working, the problem lies in the interlock system. The interlock solenoid and shifter assembly will need to be tested and inspected. The interlock solenoid is mounted to the steering column.
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