2017 Navigation question

Does anyone know what navigation system or logic Toyota uses in their system in the Tacoma?

We have noticed many of the routes used can vary quite a bit from say Google maps, or how I would usually go on a particular trip.

Do they use their own program? Garmin? etc.

 

Nope.
I do know that I question its logic quite often.
But then, I'm old school and started driving when the only navigation aid was a map and a compass.
If I have a particular destination in mind I find it on Google map, study the roads between me and it, get a sense of how to get there, and use my Taco's navigation only as a suggestion.
I love to keep making it recalculate the route!

 

Garmin

 

How do we update the maps in this system?

 

Yep, Toyota has updated Micro-USB card and can find them on eBay. I bought this one and it worked perfectly following the directions.
https://www.ebay.com/itm/124051375042

 

Some of the reviews on those EBay cards call them undependable, some with errors and faulty information. Too bad the real OEM ones are so expensive. I like my 2017 card still, most of the backcountry BLM dirt roads I go on are shown.

 

The one I posted above has been excellent