this post was submitted on 27 Mar 2024
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Even cheap cars now have hundreds of processors. Modules can throw errors, send the car into limp, or deactivate the vehicle entirely.
Plus, emissions.
It’s a different game now.
I'm sure that is what the car manufacturers claim.
Don’t take my word for it. Tear into any one of the dozens of black boxes in your car and take it apart. Analyze the chips soldered on the boards. You might get lucky and find all standard chips with information available from suppliers.
Try looking at the data going across any one of the several buses transiting your vehicle. OBD is easy. The others are usually encrypted and much higher speed.
Cars are legitimately complex. Don’t just listen to the manufacturers and scoff. Look up some research into breaking the communication protocols that MB or BMW use. Compare that with GM’s newest standard. Go ahead and practice your reverse engineering skills, because these things aren’t published.
The problem with the black box approach is not only does it mess with right to repair, competition, and home build jobs, but even people who make cars! I've literally been to talks in car manufacturing events where a speaker from a large car manufacturing give talks about how hard it is making life for them. Does that car manufacturer do anything different? Nope. Whole culture is infected with "my secrets" thinking which makes everyone's life hard. Things are at a complexity now, everything should be built to be debugged.