@thor I don't know what type of diagnostic connectors are used but I'm fairly certain there's a standard like OBD-2 or J1962. It would probably have a reset mechanism built in.

Computers in everything is unnecessary and adds many more problems than it solves. Many vehicles are drive by wire and have been for almost 20 years. The steering, the accelerator and the brakes are mostly just for show. The computers take the input and, using tables, output the corresponding action.