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Originally Posted by peterbrown77
I don't know about the rest of you, but my Valentine One has been going nuts the past couple of years. I couldn't figure it out - steady alerts for miles and miles, usually pointing behind me until it would just stop. I finally deduced the culprit - Audis. A6s, 7s, and Q7s seem to be the worst offenders. Their blind-spot detection system sets off the V1, but only when they're in front of you. As soon as you get even with them, it goes silent again.
I've read the BMWs and Mercs do the same, but haven't personally experienced it.
Another V1 anomaly is that Chevy Trailblazers' and GMC Envoy's high-mounted stop lights set off the Valentine's laser alarm if you're close enough.
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You are seeing the impact mentioned earlier, namely the combination of false signals from cruise control systems and lane departure warning systems which drive nearly all radar detectors nuts. Fortunately, Valentine Research came out with a firmware update that all but eliminates these false alerts once it is installed.
GM's high mounted brake lights, particularly the ones with LED's, emit light wave lengths that are very similar to the police lasers, which can trigger the laser warning system.