Your mileage may vary. I work in avionics but I’m qualified for a lot of different electronics installation and repair. A lot of automakers have deliberately made it so removal of Sim cards that allow for the transmission of this data will brick the vehicle (according to others in this and other threads on this topic that I have been reading). You may not have a choice. The electronics in the vehicle measure things like wheel speed, braking force, tire pressure. If your car has ABS (which new vehicles are required to have due to safety) there’s a computer for that. Power steering Assist? There’s a computer for that especially if you don’t have power steering fluid under your hood and therefore don’t have a hydraulic power steering system. All of those computers collect data. I would absolutely not be surprised if that data is part of what is transmitted back.
That being said, I am thinking it’s also possible that if there is enough public outcry (especially with John Deere losing their case against right to repair) there will be a market now for devices and software that modify or otherwise neutralize this data connection. Whether that will go unanswered by automakers I can’t say. But while I would recommend that everyone learn to change a tire, spark plugs, and do an oil change, I wouldn’t recommend that people start mucking about with electricity and software without having some kind of guide. 12 volts isn’t a lot but that’s not the only danger when you’re messing with a vehicle that moves at significant speed.
When I build a wire harness I don’t just run one wire. Usually it’s a whole bundle of specific lengths based on engineering drawings and schematics with markers representing and identifying each wire. Car manufacturers build their wires in poor Asian countries mostly. The wire harnesses are not properly marked and I also think might be mostly all one harness for this kind of thing. Like. One body harness and so on. I also don’t think they have any identifying marks except color and there’s no real regulations I think for them using multiple wires of the same colour in the same harness. So you may even find a guide that says cut the green and white wire. But there may be three of them.
Your mileage may vary. I work in avionics but I’m qualified for a lot of different electronics installation and repair. A lot of automakers have deliberately made it so removal of Sim cards that allow for the transmission of this data will brick the vehicle (according to others in this and other threads on this topic that I have been reading). You may not have a choice. The electronics in the vehicle measure things like wheel speed, braking force, tire pressure. If your car has ABS (which new vehicles are required to have due to safety) there’s a computer for that. Power steering Assist? There’s a computer for that especially if you don’t have power steering fluid under your hood and therefore don’t have a hydraulic power steering system. All of those computers collect data. I would absolutely not be surprised if that data is part of what is transmitted back.
That being said, I am thinking it’s also possible that if there is enough public outcry (especially with John Deere losing their case against right to repair) there will be a market now for devices and software that modify or otherwise neutralize this data connection. Whether that will go unanswered by automakers I can’t say. But while I would recommend that everyone learn to change a tire, spark plugs, and do an oil change, I wouldn’t recommend that people start mucking about with electricity and software without having some kind of guide. 12 volts isn’t a lot but that’s not the only danger when you’re messing with a vehicle that moves at significant speed.
When I build a wire harness I don’t just run one wire. Usually it’s a whole bundle of specific lengths based on engineering drawings and schematics with markers representing and identifying each wire. Car manufacturers build their wires in poor Asian countries mostly. The wire harnesses are not properly marked and I also think might be mostly all one harness for this kind of thing. Like. One body harness and so on. I also don’t think they have any identifying marks except color and there’s no real regulations I think for them using multiple wires of the same colour in the same harness. So you may even find a guide that says cut the green and white wire. But there may be three of them.
Wow, that’s just ridiculous.
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