Owners/service Manual problems of the 2015 Ford Edge

Unlike other Ford vehicles, the Edge rear backup system activates only when the vehicle is approaching an object at less than 3 mph or an object is approaching the rear of the vehicle directly. Lateral movement is not detected. Also, stationary objects directly behind the vehicle within the vehicle,s warning zone are not detected unless the vehicle is moving. Within the first week of driving this vehicle, I tried to back up from a parking space. A pedestrian was walking directly behind the right rear of the vehicle. The vehicle started rearward and hit the pedestrian without any audible warning. The pedestrian continued to the right side of the vehicle, gave me a disgusting look and walked away I returned the vehicle to the Ford dealer complaining about the backup system and we tested two other new Edge's. They performed the same way. The owner's manual outlines the same backup procedure as I described above. The dealer explained that this system was new and only on the 2015 and beyond Edge. I think this system is poorly designed compared to other Ford vehicles. I also have a 2016 explorer with a rear backup system. An audible warning sounds every time something is within the backup zone I. E. Standing still, lateral movement, approaching, etc. I would like to see some type of investigation into this matter. Thank you.