door pops open when driving

I took my car in to the dealership because the door would pop open when driving. We would drive and usually after making a turn, the outside door would make a popping sound and the door open indicator would turn on. The dealership said they didn't know what the problem was but said they would replace some wire (they said that is what BMW is telling them to do). I got my car back, but it has the same problem. Has anyone else had the problem with their X5 and what did you do to fix it?