So, I've had my V940 for about a year and a half now, and I had been very happy with its performance. However, ever since I hardwired it into my cigarette lighter in my car it has been giving me fits!
It will start off by giving the "SelfCal" mesage. Then, usually in 20 minute intervals, it will give me the "Service Required" message. It isn't always in 20 minute intervals. Heck, I can sometimes make a 3 hour drive with it doing it only once. Each time this happens I just turn it off and back on. However, recently I'm discovering that detection is pretty pathetic. In fact, it pretty much now never detects patrol cars that are obviously on the median pointing their guns at me.
Could this be related to me hardwiring it, or maybe just the fact it is permanently mounted on the windshield? I have it mounted on the windshield directly above my rearview mirror. Please let me know what I need to do, is it just screwed? Thanks!