for people that have this problem. most of the time it will just be the gps files. make sure when you test it out the car is not moving. i know its common sense but you never know, right. so if deleting the gps files worked for you but the problem came back again after a few days/weeks/months or so. 99.99% sure its because of the same thing. i've already had to do this twice in a span of a month. what i would suggest is buy the cheapest 1gb sd card you can find and load testmode on it. that way anytime this happens, pull over anywhere, run test mode, delete files, and viola its fixed again. th