Recently upgraded a 2016 Explorer to Sync 3 and updated to version 2.3. Everything works great except one feature. Previously on MFT, when I went in reverse, my rear sensors would display a top down graphic of the car on the touchscreen showing which part of my bumper was close to an object (green, yellow or red color codes). It works with the front sensors, now, but not the back. I still register the proximity "beeps" and the rear camera works. Any thoughts?