How do you re-set your Mercedes CE0682 key fob?

To reset your Mercedes CE0682 key fob, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Then, press and hold the "Lock" button on the key fob for about 10 seconds. Release the button, and turn the ignition back to the "Off" position. This process should reset the key fob, allowing it to sync with your vehicle.