Also, am I crazy or are there two completely different sensors being discussed here? My understanding is that the pre-collision and adaptive cruise function use a sensor behind the front bumper, while the lane-keeping, auto high beam, and auto wipers are controlled by a camera by the inside rear view mirror.
There must be two. I have an 801a and mine fires off when I'm passing. I always build speed before pulling out and it gets all excited on me. Annoying, but I haven't turned it off.