If you lean your head down towards the gear shift then look up at the non-nav unit's display, you'll see the Bluetooth icon next to the USB icon. You can only see it with the power to the unit turned on.

I thought we didn't have Bluetooth?

 

I have nav, so I can't speak to seeing the icon, but are non-nav vehicles setup to accept voice commands?

The nav vehicles are, but I was told no blue-tooth when we purchased ours.

 

shared display prolly