Agree on using a phone/tablet for up to date maps. As for turn by turn, my '13 will give audio cues through the head unit if I'm running Pandora or Bluetooth audio from the phone. I rarely use the radio or XM anyway and any music is already coming from my phone so it works well for me in this case. I also have a magnetic mount just under the power button for the car, so if I have to see a visual, I can always glance at the phone screen if necessary. Probably not as safe as having the navigation tab focused on the DIC, but usually the audio cues as well as paying attention to the road is enough.