So when you got into the right rear "well area" where the central locking control pump is at, did you find water in there?

If your central locking control pump "runs" when you hit the lock / unlock button but does not lock / unlock everything (doors / fuel door / and on roadsters the center console lid) then you likely have a break in one of the air lines (yellow tubing). You should be able to hear where the air is leaking and track down the leak in the air line(s). Good luck . . .

Enjoy your Crossfire!