CanadianTVR

Hi All, I'm a new member with a 06 E350 4matic wagon. I'm having trouble with the tailgate. it shows it's open when it is closed and yesterday it start clicking, the toneau cover goes up without opening the tailgate and the other locks started making noise and the dash lock and unlock some times work. It is also setting off the alarm which my neighbours aren't really happy about. Does anybody have any solutions? I don't want to take it in if it is something I can fix. Looking for ideas and where to look for the problem.