Mazda Expands Takata Recall to Include B-Series Pickups - PickupTrucks.com
They do have a good understanding of what the root cause is. The propellant canisters made by Takata in Ole Meh-i-co were manufactured using questionable quality control methods and procedures at the factory. That, along with the change to make the propellants less toxic at that time combined into the "perfect storm" if you will. Source: news.pickuptrucks.com
