Aside from ODB II scanners, what special service tools (SSTs) are used on the computers in modern vehicles?
What brings this to mind is purchasing a 2011 Corolla. It appears to have a problem described by service bulletin TSB-0124-11, which says the computer needs to be reprogrammed. Of course, I intend to have the Toyota dealer do all the work on the car while it is new. There are at least 5 service manuals for the car and the total cost of the printed volumes would be about $1,000. Online access is cheaper, but even that is about $400 per year. I was daydreaming about buying 1 volume of the service manual per year, so by the time the car is well worn, I'd have all the manuals. But if it requires expensive SSTs to deal with the vehicle's computers, maybe I should give up on that plan.