I have read many of the comments here, and everything focuses on a sensor fault, or cabling problem. I'm thinking it may be a software issue. I had this problem occur last weekend. Like so many others, I was in freeway traffic, and some of the people out there were rather crazy. The driver in front of me slowed, but I was able to do likewise and that would not normally be an issue. However, the car behind me was a few seconds longer and closed the distance between our vehicles. Behind him was another erratic driver who swung ride to the right ( onto the shoulder ), and then wide to the left ( almost colliding with a car to his side ). With this serious of events, the collision alert system kicked in ( but I was well in control so no actual impacts ), and when I looked down, the cross traffic system fault displayed. I pressed the OK button on the left display and the message went away. Thereafter, with about 200 miles of driving in similar conditions, there were no problems. Each one of the sensors triggers a software event. With multiple events occurring at the same time, my feeling is that the software isn't exactly sure what is the actual threat, and provides this alert. In other words, perhaps a multiple of sensed inputs confuses the software as written. To fix this, Ford should take a serious look at the software controlling this alert system ( or maybe they already resolved it with changes in newer packages ) and then provide an update to owners. If I'm right, it is relatively easy to resolve this at a cost far less than taking back vehicles. Tim