I know this is a really old post, but just bought a 2017 QX50 non-Nav and found out after the fact that you can't stream Bluetooth audio on non-Nav models (currently reaming the dealer about this not being mentioned after me talking with them for 10 minutes on how I love my bluetooth radio in my old car and can't live without that functionality). Outside of anything the dealer may do for me (I doubt nothing) I did find this new nifty little cable called a WireLinq made by GromAudio. It plugs into your Andriod phone through USB and then plugs into the USB port in the car, and tricks the audio system into thinking it's an iPod attached and uses the iPod interface functionality on your Android phone. I'm assuming after 2.5 years you've figured something out for your needs, but just mentioning it here in case anyone else runs into the same issues I am :-/