Would you consider a modern car complex? A modern tractor is at least that complicated, more in some ways, maybe less in others. From a high level, this doesn

Would you consider a modern car complex? A modern tractor is at least that complicated, more in some ways, maybe less in others. From a high level, this doesn't seem a whole lot different than the scan tools needed to diagnose new cars. Some of which are vendor-locked on cars, but at minimum, there are OBDII codes and scanners available to consumers. It's the more marque-specific scan tools that aren't as readily available (but even then, I believe indy service shops can buy/license them, but it's very expensive).