Radio Code for renault tape player

[dailyd]

Hi, I may swap my Alpine headunit back to the default factory one when I come to sell or part ex my car, but it now asks for the radio code, would anyone be able to retrieve my code from the units serial number or anything for me?

 

[Biggy]

Take it in to your nearest renault dealer theyve got a database with all the numbers on. ive done it twice now and they havent charged me.

 

[OLLZIE]

ive put in the wring code for my cd player. will renault charge me for the correct 1?