So, how did you figure it out? I have the same issues with my remote keys, and I have no clue how to fix it. I've read on several forums that the problem might be in door lock actuator or battery. I have checked my battery, reprogrammed the remote buttons, unplugged the connector to the actuator and many other things which I can't even describe, but nothing seems to work. My friend advised me to contact locksmith in mill hill and see if they can help.