2009 Audi S5: Blind spot detection
October 15, 2009
Our long-term 2009 Audi S5 is equipped with a blind-spot detection system (named, somewhat confusingly, Audi side assist). It's part of the Tech package ($2200) that includes back-up camera, adaptive headlamps (AFS), and smart keyless entry/start.
If another vehicle is in your blindspot (either side), the dots in the respective mirror housing light faintly (above pic). Signal a lane change while the other vehicle is there and the dots flash. Audi says the system range is 150 ft and your car must be going at least 19 mph. There is no auditory alert.
If you aren't aware of the system, the first time it flashes you may think you ran a traffic camera.
Or that perhaps paparazzi were interested in your business.
What's that? You don't like it because you're a Luddite?
There's a defeat switch near the A-pillar above the speaker.
Albert Austria, Senior Engineer, Edmunds, Inc.