just had this problem this morning alarm going off and not locking on key fob, passenger side wet through just took carpet up and stuck a hair dryer in the for about an hour, i made sure all the wires were dry as the ccm was all dry in side so the short was due to the wire/cables leading into the ccm box, got to think of away of water proofing the cables leading to the ccm

hope this helps

cheers neil