Nobody should be debugging code by hand either but when all the tools fail, its time to get your hands dirty.

No, when all the tools fail, they buy back the car or you lemon law it. Story over. It would not happen, does not happen, cannot happen.

I agree with the below poster, this reeks, no one is doing o-scope level debugging on a production vehicle. It's what someone would say that has no idea how cars are designed, built, and serviced in reality.