I've just recently acquired a 1995 Rover 820 (from a dealer). The key fob has a two-button device on it, but has no batteries in it. I assume it's for remote central locking and immobiliser? One button has embossed dots on it the other is plain. Can someone confirm what each is for, and before I get the batteries, offer any tips for usage. Does one button operate the central locking AND alarm, and the other the immobiliser (not even sure how an immobiliser works)?
TIA, Paul A