I believe quite a few cars do this including my wife's Saab, the idea is if you accidentally unlock the car when walking away and don't open any doors it locks it again as an anti theft precaution.
Originally Posted by
corfire
I think that maybe the Crossfire has tricked you.:roll eyes: If you lock the doors with the fob and then unlock them without opening a door, they will re-lock automatically in a few minutes (not sure how long). You must open a door for them to stay unlocked. It has a German mind of its own! I was originally confused by this feature also.
I am not sure what you took out, but if you removed the relay the locks probably won't work. It sounds like you had it wired right if it was chirping?