Disabling the hardware can be really hard, my 2025 Toyota Sienna is always connected. You can't just pull a fuse or rip out an antenna, I have to take the entire dashboard apart to reach the Data Communication Module (DCM) module. If anyone's curious what that looks like, it's a little bit easier on the Toyota Tacoma, here are some pictures of the process: https://www.tacoma4g.com/forum/threads/disabling-dcm-telemat...
It's complex enough that I haven't done it yet in my Sienna, but I plan to!
My 2025 Mazda Miata has a CAN connected Telematics Control Unit that sends a bunch of data to Mazda on ignition off. Among this data is acceleration and velocity data along with coordinates sampled for where you were. It is also used as a gateway for the Mazda app to start your car, query your vehicle's tire pressure, etc. It is claimed that you can opt out of this by calling Mazda and being persistent. The CAN traff…
I fear the next version of Miata will be an encrypted CAN like most other cars have moved to
As I understand it, they're required to do that now if they want to sell in the EU. They emphatically do not want anyone tinkering with their cars.
> Ignore your car's complaints and error messages. Did you know Orange dash error lights are non critical? "Tire pressure low" is one you should probably check out on a regular basis.
Yeah that's terrible advice. Learning to ignore safety warnings is an amazing way to wind up stranded or with a destroyed car because you decided to ignore a warning light
The first 100yr of automobiles didn't have TPMS and it was mostly fine.
Remove the antennas. Do not give in to the mirage of convenience. Use a stand alone generic GPS. Vehicle GPS devices are anti privacy for so many reasons. Listen to stored music from an SD card if terrestrial radio (NO SATELLITE). Did you know almost ALL late model cars can play a TURN YOUR PHONE OFF. Your phone does more than track you - the Bluetooth and wifi beacon scanners are always running. When you come across…
Ok stop with the panicking. What's wrong with GPS in vehicles? If it's not connected to the internet, there is no issue. What's wrong with playing music from the phone on Bluetooth or Aux? Did you also know you can ride a horse instead of a car? Bluetooth and WiFi isn't running if you turned them off. Bluetooth also isn't really used for tracking unless someone is looking for you or you're part of some service like A…
If it's not connected to the internet, there is no issue.
It's connected to the Internet. Every car has a SIM card now.
No doubt about this one. But, how much are the ubiquitous ride-for-hire e-scooters spying on you, and everyone else on the street?
It's where we are. Everything everywhere is collecting data and spying. If it exists in a database, then the government has access to that database if it ever wants to legally or otherwise. It's been like that since 9:11 and probably before. All we need now is for the right person to walk in and turn the key. We're lucky that Donald Trump is probably too stupid to understand what he's got under his thumb.
He's a useful president surrounded by smarter people who will figure out ways to use this data rather than sit around tweeting all day.
My 2025 Mazda Miata has a CAN connected Telematics Control Unit that sends a bunch of data to Mazda on ignition off. Among this data is acceleration and velocity data along with coordinates sampled for where you were. It is also used as a gateway for the Mazda app to start your car, query your vehicle's tire pressure, etc. It is claimed that you can opt out of this by calling Mazda and being persistent. The CAN traff…
I fear the next version of Miata will be an encrypted CAN like most other cars have moved to As I understand it, they're required to do that now if they want to sell in the EU. They emphatically do not want anyone tinkering with their cars.
They don’t want people modifying ADAS systems mostly, and the main requirement is SecOC, which is cryptographic authentication but the message is still plaintext. Basically they don’t want third party modifications able to randomly send the “steer left” message to the steering rack, for example.
My 2025 Mazda Miata has a CAN connected Telematics Control Unit that sends a bunch of data to Mazda on ignition off. Among this data is acceleration and velocity data along with coordinates sampled for where you were. It is also used as a gateway for the Mazda app to start your car, query your vehicle's tire pressure, etc. It is claimed that you can opt out of this by calling Mazda and being persistent. The CAN traff…
> The CAN traffic is unencrypted. It was pretty easy to MITM this module with a cheap arm Linux board
And you didn't poison their databases and statistics with fake data?? OMG, I'm thinking of buying one of these cars just for this opportunity! (No, I'm not.)