Hi there! So a few questions rather than answers: Has it ever worked? If not then you need an auto locksmith to make it talk to the car. Even a second hand one can be matched, I had it done. Do you have another fob that does work? If so, back to the comment above. But - you say it doesn't work the central locking - does it operate the sliding doors and boot? Have you tried disconnecting the battery for half an hour to give the ECU and BCM (Body Control Module) a reset? My fobs do have the panic button, and it works, but I've got pattern cases and they came with the button, I can't remember if the original didn't it was 4 years ago I swapped them after the markings wore off the 1st ones. So I got a couple of extras from China, cheap as you like as it didn't matter they took 6 weeks to get here.