It first started with the back door, could not open door outside or inside. Handle was very loose and wouldn't' re tack to door. Took vehicle to local bodyshop, no parts or repairs were needed inside the door. After they took the inside paneling off the inside of the door, the part that operates the outside door handle needed lubrication. Thought that would be the end of the problem. Well it happen to the drivers door, front passenger door and now it's happening again to the original door handle. The bodyshop owner found the same problem each time. This Ford Escape has been a excellent vehicle, it well taken care and the local Ford Dealership takes care of all service requirements. Can't figure out what's causing the door handles to do this. Any assistance will be appreciated.