I have a 2017 iA. I got the nav card from Amazon (in Toyota packaging) about a year ago. It has worked fine until a week ago, and now won't load. It says "Navigation Loading" for about 5 seconds and then goes to a map (not where I'm at) for 5 seconds and then repeats over and over. A week ago after doing the above for a few cycles it would load and start working. Now it doesn't at all. I took the card out and cleaned the contacts with alcohol. No difference. Any thoughts would be appreciated. There are few iA's here and the dealer knows little about them.