Could it be that your understanding of Toyota quality is based on millions and millions of dollars of marketing money spent each year. And then it turns out they are just like every other large global company.
Toyota's rep has been well earned, there's plenty of literature in operations about this, as well as popular trade coverage (i.e., http://www.nytimes.com/2013/10/29/automobiles/japanese-autos...)
Their software process wasn't given the same attention, and they've been burned by it. Embedded systems are really tricky, and a good process (design through end-of-life) is key.