My Transit Connect's driver's door was OK when I took it in for service at the Autonation in Delray Beach,, but then the dealer called me that the driver's side door lock was "making a noise." They wanted $500 to fix it. My questions are two fold. Does anyone have an idea what they've done and how I can fix it and does anyone have any idea how I can disconnect the electronics and simply go back ot using a mechanical key.