[sonaltr]

We need an ifixit site to help owners that care about such things.

You had a great point (about FCC) and I'll see if I can do something about this for the cars I plan on getting.

[kop316]

I like the idea of an ifixit site for things like that.

If I were to hazard a guess, the actual modem you are looking for if in the dash, as it seems that is where the "entertainment brains" are.

[neuralRiot]

Not necessarily, the modem, or telematics unit can be anywhere in the car and communicate with the infotainment system and other modules through a data network just like you can have the cable modem in your attic and a an ethernet cable to your desktop.