My 8.4 nav. has a cellular connection... But without an antenna it would be pretty useless.
The WiFi hot spot is password protected, not sure how secure that is.
I seem to remember that the nav radios also have (or at least it's available) FCA's equivalent of OnStar. Whateverthehell it's called.
It would almost
have to use a cellular connection. Is there an unused antenna connector on the radio? If not, I could picture it being built into the "shark fin". Cellular doesn't require much of an antenna at the frequencies where it operates. 3" or less, for basic cell channels. The higher frequencies used for some of the newer services require even smaller antennas.
Edit - I may be misunderstanding your "cellular connection" comment. My non-nav 8.4 also connects to my phone. Uses my contacts, recent calls, etc. Even reads my incoming texts to me.
But even though it uses the microphones and speakers in the truck, the actual call is still made with the cell phone. NOT by any other cellphone link incorporated into the truck radio.
Regarding the "telematics" data that DTN alluded to...
Yeah. All that stuff - operational parameters, including speed, throttle, steering, brakes, etc - is funneled to the SRS (airbag) module. I think all that is saved is the last 20-30 seconds before a crash event. Everything else is overwritten. At least that's how it was commonly done, before. Still not so sure about voice. That might present a problem...
I'm not sure what the "letter of the law" says about
accessing that data, after a crash. It used to require a court order.