My wife's '04 Maxima sometimes locks itself when the keys are in the ignition and the engine is running. (It might happen with the engine off but the key in the acc. position.) I recall a time when I stepped out of the car at the store while she was in it, and when I returned the door was locked. (No...she wasn't sending me a signal...) This also happened to her the other day, forcing her to use her hidden key.
Can anyone shed any light on this?
--Richard