Abrahams

Can anyone recommend a Chrysler mechanic in the Watford or London area. I have a 2006 Chrysler Grand Voyager with a problem with the key fob, the issue is not with the fob but on the car, so I need someone who understands Chrysler technology. I've been to an independant key fob supplier, they scanned the car but couldn't get the fob and car to communicate with each other but confirmed that the problem was at the car side as the fob appeared to be working. Thank you for your assistance.