Pretty much this, diagnosing and fixing an electric motor is about as difficult as an alternator. Check signal, if good remove unit and swap (core gets remanufactured). With drive by wire and steer by wire and all that most things are equally modular. Gas pedal/throttle unit is pretty much a rheostat with a spring-loaded pedal, steering rack actuators, etc

Then you got ICE which becomes a ship of theseus. If you put enough hours on a combustion engine you go from the simple stuff like hoses and timing belts to having to replace piston rings, bearings, or even the cylinder heads if they get so worn out that they leak and fail compression tests