Toyota Recalls – Better Ask Why 5 Times … Or Not?
Perhaps it’s time for Toyota to go beyond the simple root cause analysis of 5-Whys and start using advanced root cause analysis for these more difficult issues (or for all issues).
If you need to learn why 5-Whys should NOT be your preferred root cause analysis tool, see this article:
It has links to several articles that explain the drawbacks of 5-Whys and then you can see why Toyota might be having problems.
And if you become interested in advanced root cause analysis, see the course schedule here: