Land Rover Repair: REAR CARGO DOOR WILL NOT UNLOCK

Question
All of a sudden my lock/unlock remote for my Land Rover Discovery (2003) will not unlock my rear cargo door.  All other doors lock/unlock but the cargo door.  How can I get the door to the unlocked position?  There is no key lock that I can locate.  Suggestions? v6

Answer
There should be a lock button on the inside of the door.  Did you pull it up and try the inside handle?

Next, pop the Land Rover logo out of the rear handle assembly and shoot penetrating oil into the outside handle.  Sometimes they jam from corrosion

Let me know if either of those tricks works