I own the avic n3, and lately i notice the navigation is not as accurate as it used to be. Yes, i do have my VSS (pink wire) hooked up properly in my car. When calculating a route i been noticing latley that it makes me take the street, when the highway or freeway would be a much faster and shorter route. Within the options of the navi, I have tried both the "fast" and "short" route and it still takes me out the way. I also even tried both the west coast and east coast disc. I live in the Midwest region (Wisconsin) and both disc will work with my state i live in.

 

Any suggestions on how i can correct or resolve this problem???