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 f**ked 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