My sync just stopped working. Phone button, voice activation, system settings all just stopped working. Two days later the battery was dead in car. Replaced battery but sync still doesnt work. Car has 43000 miles and been well cared for. A little history...when the temps starting cooling outside, condensation accumlates on the inside of my car. Had it a dealer ship so many times before warranty was out, they claimed they couldnt find the source of problem. Now I am wondering if this has caused a problem with the sync computer. Dealership no help. They want me to pay 120.00 to do diagnostic test. Any help would be appreciated. Thanks!