OK if it is happening when the X is driving then that knocks out the remote..... Is it possible that the switch on the center console is sticking or some how is getting wet? try disconnecting the cluster of swithes temporarly and see if that resolves the situation.

Maybe a little complicated to get out... the easiest way I have found is to remove the radio and reach in from there and push the a/c controller out and reach in from there and push the cluster out with the trunk switch....

__________________
Robert

1994 740iL
2001 X5 4.4i Sport
2004 Kawasaki ZX-6R
2009 VW Jetta S