How do you reset your mk3 mondeo 3 button key fob?

To reset your MK3 Mondeo 3-button key fob, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Press and hold the "Unlock" button on the key fob for about 10 seconds while turning the ignition to "Off" and then back to "On." Release the "Unlock" button, and you should hear a sound indicating the reset was successful. Test the key fob to ensure it is functioning properly.