All windows and sunroof open without command

1999 323i w/power windows & sunroof. Ignition off, exit car, lock car. then 2 minutes to 3 hours later the windows and sr come open by themselves ! Is it something to do with the "comfort relay"? I know the remote control has a "windows down" feature when the remote to unlock is depressed twice being held down for 5 seconds on the second depression. Is this some sort of "mode" that can be reset?
This is driving my fiance crazy...it's not safe for her to park outside....
help...