As others have reported, my 760 worked successfully with the Navteq codes, but expires within a minute of entering the TTN codes even when both USA and Canada codes are entered.
Did you connected your TMC Receiver? This option is only available when the TMC Receiver is connected
On Nuvi 760 NAVTEQ code worked but no TTN. I don't see the traffic ICON on the screen. Maybe I'll have to set a route to see the ICON. Will try driving around tomorrow to see if I get traffic info.
Just for the ones having trouble with the TTN staying activated....I did what post 10 said and it stayed ....( thru 6/11/2023)....you guys might try it....It worked for me on a 680
Cheers mate, this will be useful when I go traveling next time.