as i understand it, each board is coded to the keys, so if you replace it, your gonna need the key to go with it, or reprogramme yours
mine fucked up last week, and being delocked i couldnt get into my car for almost a week, let me in yesterday though.........
im getting a new alarm fitted today to stop it happening again, the Renault one will always be dodgy because of where it is, the sunroof is a very common leak, and when it does it pisses all over that circuit board