How do you reset your coded keys on 2000 mercury mystique?

Answer 1

To reset the coded keys on a 2000 Mercury Mystique, you'll need to use the ignition key and the on-board computer. Insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for about 10 minutes until the security light turns off, then turn the key back to the "Off" position and repeat the process for a total of three cycles. After the third cycle, your coded key should be reset, and you can test it to ensure it works.