As an owner of a 2004 Toyota Tundra, I am concerned about my safety because of the airbag defect that has been in the news.

I have tried to determine whether I am at risk, but no one can tell me whether I have an ammonium nitrate-powered Takata airbag. I would like to have information with which to make a decision to possibly disable the airbag or mothball the vehicle.

The VIN of this vehicle is not on the published at-risk list, but I have no faith that the VIN list is complete. The manufacturer has claimed they cannot provide me with the brand and model of the airbag in my vehicle. Can you help?

- Patrick Goodall, Portland, Ore.

Got a consumer problem? The ABC News Fixer may be able to help. Click here to submit your problem online. Letters are edited for length and clarity.

DEAR PATRICK:

Given the way the airbag recalls have been rolled out in dribs and drabs over the past several years, we can’t blame you for being concerned. Among the 19 million vehicles with airbags that have been recalled worldwide are some models of Toyotas, including some 2003 and 2004 Tundras -- though your vehicle is not one of them.

The ammonium nitrate inside the airbags, in the event of a collision, undergoes a chemical reaction that produces gas to inflate the airbag. In the recalled airbags, there is a risk that the chemicals could destabilize and cause the metal canister inside the airbag to explode. At least six deaths – none of them in Toyotas -- have been linked to the problem.

We contacted Toyota and the National Highway Traffic Safety Administration (NHTSA) to try to get some more information for you. Toyota said your Tundra is not under recall. Your car does indeed have a Takata airbag, but that particular group of airbags was not among those identified as potentially defective, said Cindy Knight, a PR manager for Toyota.

Knight added that Toyota is part of an industry-wide testing initiative to identify any other problems related to the defective airbags. She said if the recall is widened, they would notify you by first class mail. NHTSA didn’t have much to add, other than to say you and other consumers can keep checking their VIN lookup tool at Safercar.gov for any news.

CLICK HERE to check your VIN number.

The airbag recalls have involved numerous makes of vehicles including Honda, BMW, Chrysler, Dodge/Ram, Ford, Nissan and others.

NHTSA did say the airbags seem to be vulnerable in places with persistent high humidity and high temperatures, such as Florida, Georgia, South Carolina, the Gulf Coast states, Hawaii and island territories.

As for whether you should relax or continue to be concerned, Sean Kane of The Safety Institute, a nonprofit research organization, says you and other consumers are pretty much at the mercy of the auto corporations and NHTSA. Kane said he understands why consumers are skeptical, given the way the recall was rolled out slowly and then expanded bit by bit to include more vehicles.

You told us you might just go get new airbags anyway. But that, too, could be a challenge, as the inventory of replacement air bags is so low that it reportedly may take up to two years just to manufacture enough to replace those in the recalled vehicles.

- The ABC News Fixer

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Stephanie Zimmermann

Most people groan at the thought of spending hours on the phone with a customer service call center, but Stephanie Zimmermann relishes the chance to slice through red tape.

Before joining ABC News, Stephanie untangled consumer problems at the Chicago Sun-Times, where her popular column recovered more than $1.4 million in refunds, credits, and merchandise for consumers in the Windy City.

Stephanie, who lives in Chicago, has also worked at the South Florida Sun-Sentinel, and has bachelor's and master's degrees from the Medill School of Journalism at Northwestern University. But most of all, Stephanie is a consumer who hates to see anyone else get ripped off.