My ex has a seat ibiza 54 reg and the central locking with the button on the key does not work. It locks with the key but when you unlock it with the key the alarm goes off until you put the key in the ignition and turn to position 2. I'm pretty sure she changed the battery recently could this be related? Does the key need re coding or is there another way to get it to work? Or is it shot and she needs a new one? Any help would be appreciated. Cheers forum.