Hello there, Have recently purchased a Grand LX 2.5CRD 2003 but it only has a single key and no fobs. This put me off but the car drives great (so far) so have run with it. I know that a good auto locksmith can cut a chipped spare key and also know that you can add fobs if you already have one. My question is this: Ebay are selling 2nd had ECU with keys and fobs. Even if there was only 1 fob at least i could learn new ones to the system but how easy is it to change over or does the system need to be matched or re-programmed? Mechanically I don't doubt that i could change it all over but are there some hidden problems I may be oblivious too? Regards Scott, Worcester