take apart the fob, the rubber buttons on the PCB come apart, the rubber nipple had a metal holding bit and underneath is a small metal disc that makes the connection. i re fitted mine, and it worked, but i took the precaution and bought a new one for £17 of ebay, make sure you get the number off the back, then my local LR specialist programmed it for me (it takes 10 minutes) now i have no issues whatsoever.