How do you reset the key fob on a Renault Megane 1997 and on?

To reset the key fob on a Renault Megane (1997 and onwards), first, insert the key into the ignition and turn it to the "On" position without starting the engine. Press and hold the "lock" button on the remote for about 10 seconds. Then, turn the ignition off and remove the key. Test the key fob by pressing the buttons to ensure it is functioning correctly.