I have set this system up hundreds of times on our HHR and several times on the Fiat. As I stated in my post we were in an area of very steep grades. I don't believe once the brakes heated up they had any chance to cool down. Had I set the sensitivity to 1 there possibly would have been no problem. I just posted this so others would be warned that in very hilly winding terrain the settings recommended by Blue Ox may be too sensitive for light cars under 3000 pounds. I had no problems with the heavier HHR over these same roads in the past. Keep in mind, going down steep hills the inertia system is going to apply ever increasing brake in response to the steepness of the grade.