I have an issue were one of my keyfobs, it has stopped working, I assumed that it was the battery had failed so I swapped it for a new one. Problem is it still does not work! The little red led flashes when I press the buttons on the keyfob and thats about it. Has anyone else experienced this kind of problem, do I need to get it reprogrammed at the dealers/elsewhere or am I looking at having to replace it.