D'sNBP

I have an aftermarket navigation and it requires my car to run for about three hours for it to update. The instructions for it is lengthy and it requires me to be in the car to press different options while it's updating. What problems other than wasting gas will I run into? I really need to update it because I have to keep recalibrating it every two weeks.

DuoDSG

Holy smokes that's a long time. I got a brand new 2010 3.10 NavTeq update for my factory Navigation and it took about 20 seconds to update the software from my old 2003 version.

Even for an aftermarket, that is unnecessary. And why do you need to keep recalibrating every two weeks? Modern GPS systems do that kind of thing automatically.

D'sNBP

I've checked everything as to the wiring and it's fine. It's about every two weeks it will be way off from where it suppose to be, for example, if I'm on the freeway, it will say I'm either going over some other area like a lake or driving on the airport runway. So I have to recalibrate it and after a while it's fine again. I'm sure it will take a shorter time than three hours but it has to be running (idle) while it's updating. I have a Pioneer AVIC Z2.

shadowkahn

The reviews for that unit are either very positive, or very negative. This suggests that either they have an inconsistent quality control issue on the assembly line for it, and you happened to get one of the bad ones, or that Pioneer is artificially inflating reviews by adding in fake ones.

GPS drift should pretty much never happen. That didn't even happen years ago on cheap DeLorme laptop GPS's - it certainly isn't a technological hurdle today. If it's happening with you, you have a defective unit.

D'sNBP

Everything was perfect and spot on until about the end January. Not to go off the subject though, what harm can happen if my car idles for the time required (maybe up to three hours) to do this map update??