My wife and I own a 2015 MDX Tech and a 2017 RDX Advanced.
Are there radio and navi codes for these cars and where to find them.
If you lose the navigation how do you reset it?
How is the navigation updated on these cars?

 

There should be a card in your glove compartment or in the sleeve of your owners manual. If not, call corporate Acura with the vin handy, they will ask for your radio serial number, which displays on the screen, then, the radio should work after they give you the code.