2007 Toyota Yaris

From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.

On October 10, 2012, Toyota initiated a safety recall of approximately 2.5 million U.S. vehicles involving the following models and model years:2007-2009 Camry and Camry Hybrid, 2009 Corolla and Corolla Matrix, 2008 Highlander and Highlander Hybrid, 2007-2009 RAV4, 2008-2009 Scion xB and xD, 2008-2009 Sequoia, 2007-2008 Tundra, 2007-2008 Yaris, and 2009 Pontiac Vibe.See NHTSA recall number 12V-491 for more details, including the affected vehicle manufacture dates for each vehicle model.Note that only early-production 2009 model year vehicles are included in the recall.Toyota and GM dealers will inspect the power window master switch (PWMS) assemblies and apply a specialized grease that inhibits heat build-up.The circuit board in the PWMS may be replaced with a new one if notchy or sticking feeling is observed during the inspection.The failure report summary above shows counts for the vehicles identified at the start of this Engineering Analysis, specifically the approximately 1.4 million vehicles that share an identical PWMS assembly design including, model year 2007-2009 Camry, Camry Hybrid, RAV4, and Yaris built from September 2006 through August 2008, as well as all 2008 Highlander Hybrid.Toyota subsequently identified approximately one million additional vehicles that have a slightly different PWMS design but contain the same defect condition.Note that the totals for complaints and fires shown above may include duplicative reports (between ODI and manufacturer reports).This Engineering Analysis is closed.See attached report for additional information.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers: 10323848, 10360414, 10392622, 10394453, 10411328, 10429983, 10436663, 10446699, 10447416, 10447417, 10447419, 10447444, 10447515, 10447845, 10447947, 10449270, 10450133, 10450568, 10450606, 10450641, 10451821, 10455540, 10455614, 10456353, 10456438, 10457854, 10457955, 10459730, 10460166, 10460691, 10461220, 10462140, 10462200, 10462247, 10462404, 10462705, 10462761, 10464451, 10464769, 10465421, 10466279, 10466667, 10468126, 10468265, 10475230, 10470313, 10470684, 10471551, 10471824, 10472336, 10472910, 10473753, 10473967, 10473969, 10476921, 10477469, 10478563 and 10478657.

ODI has identified certain Toyota vehicles experiencing a higher rate of fire and thermal event incidents among all Toyota vehicles that use the same power window master switch design.They include a total of approximately 1.4 million model year (MY) 2007 through 2009 Camry, Camry Hybrid, RAV4 and Yaris vehicles built from approximately September 2006 through August 2008, as well as all MY 2008 Highlander Hybrid vehicles.This Preliminary Evaluation has been upgraded to an Engineering Analysis (EA12-006) to further study the alleged defect and its consequences.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers: 10461220, 10460691, 10460166, 10459730, 10457955, 10457854, 10456438, 10456353, 10455614, 10455540, 10451821, 10450641, 10450606, 10450568, 10450133, 10449270, 10447947, 10447845, 10447515, 10447444, 10447419, 10447417, 10447416, 10446699, 10436663, 10429983, 10411328, 10407290, 10394453, 10392622, 10360414, 10323848.