I updated to 3.4 build 19200 NA with maps on a 19 Expedition Limited and all seems to work correctly except the control for the internal WiFi hotspot.
I cannot find where to set the SSID and key for the LTE WiFi hotspot. After doing a factory reset I can see that the hotspot is broadcasting but so far I have no way to control it. When I got to the Vehicle WiFi applet all that is there are settings to control how the vehicle to connects to external WiFi.
Any ideas are greatly appreciated.