My nav started telling me that the signal has been lost every now and then few days ago.Now it seems to happen every few minutes.And on the way home last night the icon on the map was traveling off course.I have tried resetting the system and that did not help.It will even lose the signal without moving my vehicle.I did notice that everytime I start up to go somewhere that the nav is reading correctly.I did not hook up the vehicle speed sensor wire,not sure if that would be causing my issue or not.Everything worked just fine after I first installed it.Any suggestions would help.Thanks.

Just got off the phone with customer support and they said its probably a bad antenna.