Thanks, JohnEM38. There is absolutely nothing in any of the documentation (not that there's much of anything for the Pioneer) referring to using the iPhone to update or control anything.
Are you able to make optional selections for daytime running lights? For making the radio turn off when the engine is turned off rather than when the driver side door is opened? Do you get audio and visual alerts for the backup cross traffic feature? etc etc.
As of now the dealer is sharing with Winnebago the long list of things that don't exist (nav system), don't work, or cannot be accessed to set options. The dealer has offered, if Winnebago continues to be unhelpful, to pick up the Travato, try to have his people figure it out, and to get help from a friend who is a Dodge Promaster service center operator.
What boggles my mind is that Winnebago says it swapped out the Uconnect unit because people complained about the screen being too small. True, the screen was too small for a navigation display, but perfectly fine for the radio/audio functions. So they replace the Uconnect with a larger screen Pioneer that doesn't have a navigation function. Yippee, we get to see the radio/audio information on a bigger screen.