Searched for this since it happened to me yesterday. I was backing around the other truck and going up the slight incline off pavement (from the driveway to the grassy incline) when the truck came to a sudden and abrupt halt with BRAKE! displayed. I looked in the camera thinking I'd missed something, parked it, walked behind the truck and nothing. I pulled forward and repeated the experience. There wasn't an approach speed that would NOT engage the automatic braking. I like the safety feature, but since this won't be the last time I'll have to take that route, I'm considering abandoning it.