I have 2013 Prius four with solar package and it is my understanding that Entune is now free, even beyond 3 years. What I am not clear is whether traffic (as well as far less useful weather, sports, stocks, fuel prices) are among this new policy.
I have the exact same car! I believe our cars use XM for Traffic, Sports, Weather, Fuel, etc. I know if they were pulled over HD Radio / FM Radio it would be free. I'll know after my 90 days are up... I think you're right about Entune above and beyond 3 years. On a related note, the SOS feature is still only free for 1 year.