> hey will _gladly_ lock out the CAN bus so no third party accessories or diagnostic tools can work with your car.
No they won't. One the law requires them to allow third part diagnostics tool (only for things that are about emissions!). Two, the third party tool maters are paying a good chunk of money to get documentation on how to do diagnostics.
While new car buys won't care, car makers know that nobody can afford to buy a new car except by selling their old car (normally done as a trade in), and the buyers of used cars care that the car can be fixed so if third party tools don't work the car has a lot less value.
No they won't. One the law requires them to allow third part diagnostics tool (only for things that are about emissions!). Two, the third party tool maters are paying a good chunk of money to get documentation on how to do diagnostics.
While new car buys won't care, car makers know that nobody can afford to buy a new car except by selling their old car (normally done as a trade in), and the buyers of used cars care that the car can be fixed so if third party tools don't work the car has a lot less value.