Vehicle manufacturers have used the recall as a means of r&d for years, most don’t make the news and parts re-designs and number changes are the result…hence the outcry over GM’s ignition switches when the known faulty switches did NOT result in a number change nor recall. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.