Varifying detection
This happens often, as the units are basically very expensive bricks. They usually work quite fine for 12 months and 37 seconds though! The devices are built by prisoners in Ohio on a work-release program ... do you think they care? No, really, do ya? After getting hosed for $340, be prepared to cough up more cash. And, even then, there is no guarantee that the "repair" will last long, as it is only warranted for 6 months after the "repair" is completed. Oh, and btw, it WILL fail again. ZZTop watch your speed, as the S2 you describe is doing squat. As for an onboard self-test feature, this is a GREAT idea, but, of course: 1) You are dreaming and 2) This would completely ruin Escort's business model.