Hi I would just like to ask the member do you need to match up the number on the GEM module or would they work in any focus if they are from a focus. I am having problem opening the car doors (CL) and been told to replace the GEM unit to solve the problem. So do I need to match them up or do they work in any car (ford focus 2002) sorry for been a pain all I seem to do is keep asking the member for some form of help, thanks for read and any advice you can give.