Maybe a stupid question, but since you are saying wifi, how is it connecting through wifi? do you have to hotspot your phone for this to work? I just don't know where the wifi signal would come from.
I too have a 2020 with CarPlay issues, seems to connect about 50% of the time. Very annoying. I have also had all sorts of other random issues while in CarPlay. I am using an apple cord and I have waze on my phone, so after reading through this, I'll change the cord to a brand new one and delete waze.
I've never been sure how to reset the headhunt when any of this is happening, but I also read that you can reset by holding power and forward button? I'm not sure what this forward button is.
Another annoyance is that it seems to randomly decide what audio to launch at startup. Sometimes it goes to my phone via bluetooth, sometimes it goes to radio but doesn't know whether to go to FM or XM and is very random, and sometimes it just has audio completely off. For example, I've decided to try my iPod, hardline via usb (which is terrible for navigation of music) but assuming I'm in a playlist the day before I shut down, then next morning the truck picks up the iPod like it didn't skip a beat, then shut off and go into store, come back out and restart, truck goes to XM. Shut off and back on and truck then picks up the iPod again. (btw the sound quality of iPod vs iPhone (via usb cord) is substantially better. Volume level 15 sounds like 30 from one to other)
Aside from all this the interface looks like it's 5 years old. This headunit has been very disappointing for a 2020 802A 70k truck.
Any advice would be very much appreciated. Thanks!