2013 BMW X5 SAV

Still open engineering analysis · opened September 17, 2021

the air bags

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.

Closed recall query · opened April 18, 2018 · closed December 1, 2018 · led to recall 18V336000

the steering

In a May 23, 2018 letter, BMW of North America, LLC (BMW) notified the National Highway Traffic Safety Administration (NHTSA) of a safety defect that may result in the loss of power steering assist in certain model year (MY) 2009 through 2013 BMW X5 xDrive35d vehicles (Recall 18V-336). The recall, which affects approximately 33,214 vehicles built from March 12, 2008 through June 27, 2013, corrects the remedy and expands the scope of a prior BMW recall (12V-550) which addressed idle pulley bolt failure in approximately 29,800 MY 2009 through 2012 BMW X5 xDrive35d vehicles built from September 1, 2008 through November 15, 2012. BMW's analysis indicates that due to a number of contributing factors it is possible that the bolt's pre-stressing force could drop to an extent that it results in the bolt becoming loosened over time. A loosening of the bolt could cause additional bending stress on top of the bolt. As a result, the bolt could break. If this were to happen, then a sudden loss of power steering assist could occur.If there were a loss of power steering assist, manual steering capability would be retained, although the effort required to steer the vehicle would be greater, and therefore may increase the risk of crash.ODI's analysis of the complaints it has received from the public (VOQ's) and BMW complaint data submitted in response to the information request letter for RQ18-001 identified a total of 93 unique VIN reports alleging failure of the idler pulley bolt after recall 12V-550 was completed on the vehicle, including 31 VOQ's and 72 BMW consumer complaints (5 complaints received by NHTSA and BMW, 3 unique VIN's submitted multiple complaints to BMW, and 1 unique VIN submitted multiple complaints to NHTSA).BMW is developing a new idler pulley fastening system as the remedy for 18V-336.The remedy is planned to begin in February 2019.Based on BMW's safety recall, this recall query is closed.The 31 VOQ's referenced in this resume are: 10499780, 10559422, 10579534, 10655424, 10661614, 10702323, 10819617, 10903433, 10948014, 10984353, 11002447, 11010667, 11013643, 11041551, 11054759, 11054909, 11066063, 11083479, 11097562, 11098865, 11113332, 11128649, 11130277, 10552773, 10817406, 10937632, 10956710, 11032006, 11042259, 11063010, 11091513.