Sorry for posting what may be an obvious question. I have a 2016 Mazda CX-5 Touring. It says it has the navigation capability but no SD card. Do I have to get this from the dealer or can one from Amazon or EBay work? Next how can you update the maps?
After you enter the requested info at the initial screen, look near the top of the page for the Navigation button, click it. Then near the bottom of the page you'll find Update My Maps, click it.
Now you'll find buttons to download the ToolBox and instructions for its use.
I purchased an Amazon nav card for my MX, it worked perfectly and I updated it three times in three years. My CX came with the card at purchase.