Alan Reagan
TDR MEMBER
I have a Garmin 478 which is the marine version. It is great on the highway and the only time I've had a problem where it told me to go the wrong direction was when I downloaded new maps and the download was corrupted.
There was some kind of problem with the USB port timing out during the long download and I didn't know there was a problem till I took a trip. There were large areas that were pretty much blank when I went through South Carolina and the GPS started giving me incorrect heading information.
I called Garmin and they told me to reload the maps. I did, it worked and I've had no more problems. By the way, with Garmin, you can buy the maps for life and upgrade anytime you like. The agreement says four times a year but I haven't seen a limit. I check about every two months and if the updates are available, I download them.
There was some kind of problem with the USB port timing out during the long download and I didn't know there was a problem till I took a trip. There were large areas that were pretty much blank when I went through South Carolina and the GPS started giving me incorrect heading information.
I called Garmin and they told me to reload the maps. I did, it worked and I've had no more problems. By the way, with Garmin, you can buy the maps for life and upgrade anytime you like. The agreement says four times a year but I haven't seen a limit. I check about every two months and if the updates are available, I download them.