2017 McLaren 570

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.

The contact owns a 2017 McLaren 570S. The contact stated that while at the dealer for routine maintenance, the contact was informed that the front driver's and passenger's door hinges were cracked and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but confirmed that the vehicle was out of warranty. The failure mileage was approximately 8,500.

NHTSA ID

11533468

Incident

Jul 3, 2023

Mileage

8,500 mi

TL* THE CONTACT OWNS A 2017 MCLAREN 570. THE CONTACT STATED THAT HE BECAME AWARE OF COOLANT LEAKING FROM THE VEHICLE WHILE PARKED IN THE DRIVEWAY. THE VEHICLE WAS TOWED TO MOTORCARS OF ATLANTA (7865 ROSWELL RD NE, SANDY SPRINGS, GA 30350) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE COOLANT LEAKED FROM A DEFECTIVE HOSE. THE VEHICLE WAS REPAIRED. THE VEHICLE WAS LATER TAKEN TO AN INDEPENDENT MECHANIC FOR AN OIL CHANGE AND THE CONTACT WAS INFORMED THAT THE COOLANT HOSE THAT WAS REPLACED HAD STARTED TO LEAK OIL AND COOLANT. THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER AND THE CONTACT WAS INFORMED THAT THE LEAK WAS CONSIDERED TOO SMALL TO BE REPAIRED UNDER WARRANTY. THE CONTACT LINKED THE FAILURE TO NHTSA CAMPAIGN NUMBER: 20V231000 (FUEL SYSTEM, GASOLINE) HOWEVER, THE VIN WAS NOT INCLUDED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 6,100.*DT*JB

NHTSA ID

11330185

Incident

Jun 4, 2020

Mileage

6,100 mi

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