anticitizen13.7
Not posting at TMC after 9/17/2018
FYI, people can read about Tesla's official recall statement here: Tesla to start replacing passenger airbags in all 2012 Model S sedans due to industry-wide Takata recall
tldr;
It's not the igniter casing by itself that causes the problem. The problem is with the Ammonium Nitrate tablets inside an inflator that allows humid air to get inside. The Ammonium Nitrate tablets absorb the moisture from the humid air, and this subtly alters the geometry of the tablets. This in turn causes the tablets to burn too quickly when ignited, and the overpressure that results causes the inflator casing to explode into fragments.
There are a few issues at play. First, when Tesla was sourcing parts for Model S back in 2010 or 2011, the inflator problem was not well understood by the car manufacturers. Tesla may have signed a multi-year contract with Takata for specific inflator components. Second, the physical design of inflators is often specific to a car model or family of cars. With recalls under way by 2014 and airbag manufacturers under pressure to produce an unprecedented number of replacement parts for defective Takata airbags, in addition to meeting commitments for product to be installed in new cars, Tesla may not have been able to find a new supplier. Too much work industry-wide, and not enough airbag makers.
tldr;
- Worldwide Passenger Side only airbag recall starts with 2012 Model S, successive years through 2016 will be recalled before their airbag inflators degrade to the danger point per NHTSA study. Letters will be sent for affected VINs.
- Model S no longer uses dangerous airbags as of late 2016 forward.
- Neither Roadster nor Model X used airbags with defective inflators.
There's still several unknown components. I'm not defending Tesla here, but does anyone know what type of igniter they're using?
*Side note, we sold that car (after the fix) and will never buy another Honda/Acura specifically due to the way they handled the Takata recall with us.
It's not the igniter casing by itself that causes the problem. The problem is with the Ammonium Nitrate tablets inside an inflator that allows humid air to get inside. The Ammonium Nitrate tablets absorb the moisture from the humid air, and this subtly alters the geometry of the tablets. This in turn causes the tablets to burn too quickly when ignited, and the overpressure that results causes the inflator casing to explode into fragments.
Exactly. I don't understand why they watched this disaster pull slowly into dock for the last 36 months without a rush plan to stop producing more future recalls. Everyone in the industry knew ALL these were going to eventually need replacement. Spoiler alert: the desiccated variants will be added when they start exploding.
They have tested thousands of these in lab, after recovering them from vehicles. The failure rate was very high for the units in Honda and other makers because in addition to using the cheapest possible propellant, they made the cheapest possible container. GM wisely made the structure able to withstand the phase changed material.
There are a few issues at play. First, when Tesla was sourcing parts for Model S back in 2010 or 2011, the inflator problem was not well understood by the car manufacturers. Tesla may have signed a multi-year contract with Takata for specific inflator components. Second, the physical design of inflators is often specific to a car model or family of cars. With recalls under way by 2014 and airbag manufacturers under pressure to produce an unprecedented number of replacement parts for defective Takata airbags, in addition to meeting commitments for product to be installed in new cars, Tesla may not have been able to find a new supplier. Too much work industry-wide, and not enough airbag makers.