That is one thing I dont like about my Canyon. The stupid thing gives false alarms. There is a fairly steep hill a couple miles from our house that at night probably 1 out of the every 10 passes through the stupid thing goes off. And, in case you are wondering, there is no vehicle in front of us when it happens. There is no consistency, we can be going up, down, or cresting the hill. The first few times it startled the hell out of me. The weird thing is that it false alarms much more frequently when my wife is driving. It doesnt do it enough for me to take it back to the dealer. I sincerely doubt they could get it to repeat when they test drive it. Maybe someday it may actually prevent me from rear ending someone so I guess I will just take the good with the bad. So far, I havent had any near collisions and needed it.