Just wanted to add to this.
I've had my wifi go out a few times since owning the truck. In my case, the devices are connected but get no internet. If you check the device, its will be connect to the trucks SSID, but will say "internet may be unavailable" or something of the sort (on an Android tablet for example). Anyway, one time during a family road trip this happen (of course) so I was planning on doing a "reset" but it eventually came back maybe a day or two later.
Now recently, like the last two weeks it was out again (kids complaining no internet) so I checked it, sure enough device was connected but no internet. I disconnected the battery for 1 hour, reconnected, drove home from work and it was back working again.
Not sure what the deal is with this, maybe it's a "feature".....