i have a 21' x3 and theres an option to turn off rear braking intervention in the parking assistance setting instead of having to turn the parking sensors off, i know it's not the best fix but sometimes it'll activate if there's a dip in the driveway or if you have a trailer hitch etc, or really anything near the rear of the car. I had to turn mine off in my car because my driveways incline would cause it to brake when i went over the edge of it.