ring renault importers customer care line with that serial # and your vin# they should be able to find that unit in the database and your car, easy to update code using stalk buttons,watching the display in centre dash- seeing the correct numebrs be displayed one by one. 1st, then secon, and so on. we have similar but note your new number on your car books.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix in-car audio.