Just got this SUV last week, with premium plus pkg, which includes 360 degree camera. Today when I backup straight, the sensor on the rear bumper only sense objects on the left and right corner behind it, not the object right behind the vehicle. The screen shows warning on left and right corner only, not the whole rear, even though there was actually a car parking right behind me. Then I check the bumper, and saw only 2 sensors on the rear bumper, one on each corner. I was hoping there would be another 2 sensors in between to pick up the object on the straight behind. Looks like I have to watch the screen when backing up. Is this right? How many sensors do you have on the rea bumper? I Am talking about those with premium plus pkg.