my mk3 came with an additional central lockin beepy fob thingy but the battery went and i replaced it and now it doesn't work. it was also connected to my immobiliser so it means i cant use my immobiliser unless i want the alarm goin off every time i oprn the car door. do i need to like reconnect the fob signal to the central locking system or what? i have no idea when it comes to this. cheers