this post was submitted on 11 Oct 2024
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Wait.... Even if users don't pay for this, their car still comes a WWAN module that is hardwired to their ignition. Yes, I realize it's more likely bolted on to the infotainment system and/or the car's RTOS, but it's still baked in.
Depends on the manufacturer's implementation, but yeah in recent years they've made it really difficult if not impossible to remove
Some models are as easy as removing a fuse or unplugging an optional component from the infotainment system. So a "quick" 1-hour process can remove that noise from the car.
But I really shouldn't have to rip apart my car just to remove spyware and nagware.
I might regret not searching about this before running my mouth here, but I would assume most automotive manufacturers, in 2024, are soldering the wwan modules onto the main board of the infotainment system for cost, and to prevent user removal of their subscription vector.
I would also assume most manufacturers who are converting standard automotive features into paid subscription services that dubiously rely on SaaS backends, are NOT also designing isolated architectures that separate the IoT infotainment system from the car's critical systems like drive control, transmission, brakes, etc. I'm guessing most at least have CAN bus connections linking them together.
But I don't know enough about cars and automotive systems to even pretend being knowledgeable. So, if anyone here is actually well versed on this subject (and not just searching forums before replying to me), please tell me I'm wrong, and how so.
Seriously, I want to be wrong about this.
Aftermarket android head unit. As long as they are able to sort out the canbus features, it's a thing. Unfortunately, it's mainly the Chinese that do this.
I unintentionally fibbed, because one thing I do have a bit of experience with is aftermarket car stereos, including double-DIN android units.
Granted, I haven't tried to install one in a 2024 car, but a lot of modern infotainment systems can't just be ripped out and replaced with aftermarket unit and retain the car's original functionality, if it can be removed at all without breaking, or removing your access to core functions, like climate control, etc.
Here's a picture of the interior of one of the cars in question, a 2024 Mazda CX-90
You're not popping a double DIN in there, and even if you did remove the screen, I'm betting the actual infotainment system boards are inside the dash somewhere installed in a mounted panel box, and they aren't just going to pop out and be replaceable like your standard head unit.
Another photo, this one from the linked article:
Chinese aftermarket "designed to fit" android head units aren't just double din universals.
That's not me, I mostly searched forums and whatnot. My cars are all old enough that they don't have this nonsense, and while I am handy with cars (do all my own maintenance), I'm not a mechanic, so I don't have direct experience.
That said, at recent-ish Chevy cars w/ OnStar seem to have separate power and board for the wwan. I've watched a couple of these videos, and they seem pretty legit.
And with a quick check on Mazda, It seems you have two options:
Again, I haven't actually done this for any car, but it's definitely something I'm going to be looking at before deciding on a make and model because I intend to remove whatever tracking BS they put in.
Maybe I'm missing something here, but OnStar is a 3rd party service, so it makes sense they would have a bolt-on device that can be removed without too much concern for the rest of the car's functionality.
Also, isn't a TCU something that controls a car's drivetrain and transmission?
Edit: nevermind, just searched and found telematic control unit. Interesting, thanks for the info, I might look into this more if I have more time later.
TCM is the thing that controls the transmission