I the last couple of weeks I've had a couple of red icons and audible alerts, with one today but no braking action. Each time scared the c**p out of me at the time - because the road ahead was completely empty! Both times I was on a fast and bendy A road, not pushing hard but at a relaxed and comfortable pace. Afterward I couldn't decide if the car saw the opposite verge of an oncoming bend, a large insect had hit the sensor or I'm encountering invisible hazards that can only be seen by radar? Is it just the hot weather, is anyone else getting ghost alerts?