Perhaps you have a bad central lock module. I know that the driver and passenger door lock actuators are activated directly by the key in their respective locks. I'm not sure about the hatch. However, since it is possible to lock the hatch and render it unopenable by certain keys (valet keys), I suppose it's lock must be slightly different and perhaps is only actuated by the central lock module. If that is the case, then failure of that module could explain why you can't unlock the hatch and only individually lock and unlock the driver side and passenger side doors.
There is another thing to check - can you open your gas tank door? |