I have an Escort 9500CI c/w Failed Rear Laser Jammer after 24 months of solid operation. I like the unit, but the rear laser jammer failed last winter. I have received a replacement but have not installed it, as I am concerned the failure may be due to the minus 30 and beyond weather conditions. The reason for concern is that my dealer replaced an identical model at the same time for the same reason for another customer. Has anyone else experienced jammer failures due to extreme cold?