2008 Lexus ES350 Recalls

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 DRIVER SIDE FLOOR MAT WILL NOT INTERFERE WITH THE THROTTLE PEDAL IF PROPERLY SECURED USING THE RETAINING HOOKS PROVIDED BY TOYOTA.HOWEVER, IF THE ALL WEATHER MAT IS UNSECURED AND MOVES FORWARD FROM ITS INTENDED POSITION IT CAN ENTRAP THE THROTTLE PEDAL AT THE FULLY OPEN POSITION AFTER IT HAS BEEN DEPRESSED.THIS CAN HAPPEN REGARDLESS OF WHETHER OR NOT ANOTHER MAT (CARPET) IS UNDERNEATH.WHEN THIS OCCURS, SOME OPERATORS REACT BY APPLYING THE BRAKE PEDAL MULTIPLE TIMES, DEPLETING THE BRAKING SYSTEM'S (VACUUM BASED) POWER ASSIST.STOPPING THE VEHICLE WITH UNASSISTED BRAKING WHILE THE THROTTLE IS FULLY OPEN REQUIRES SIGNIFICANT PEDAL FORCE, WHICH SOME OPERATORS DID NOT, OR WERE UNABLE TO, APPLY FOR THE REQUIRED DURATION.CONTINUED DRIVING IN THIS CONDITION RESULTS IN OVERHEATED BRAKES, WHICH FURTHER DIMINISHES THE BRAKING EFFECTIVENESS.SOME OPERATORS ATTEMPTED TO TURN THE VEHICLE OFF BY DEPRESSING THE ENGINE CONTROL BUTTON, HOWEVER THEY WERE UNAWARE THE BUTTON HAD TO BE DEPRESSED FOR THREE SECONDS TO STOP THE ENGINE WHEN THE VEHICLE IS IN MOTION; THIS FUNCTIONALITY WAS NOT EXPLAINED ADEQUATELY IN THE OWNER'S MANUAL.IN ODI INTERVIEWS, OWNER'S REPORTED THEY WERE UNAWARE THE ALL WEATHER MAT HAD THE POTENTIAL TO INTERFERE WITH THE THROTTLE PEDAL, ADVISING THAT THIS WAS NEVER PROPERLY EXPLAINED GIVEN THE SIGNIFICANT HAZARD IT REPRESENTED.OWNERS REPORTED SEVERAL EXPLANATIONS FOR WHY THE MAT WAS UNSECURED, INCLUDING THAT THE VEHICLE WAS DELIVERED IN THIS CONDITION (MOST COMMON REASON), OR THAT THEY HAD (UNWITTINGLY) INSTALLED THE MAT THEMSELVES, OR THAT ANOTHER PARTY, SUCH AS A CAR WASH ATTENDANT, HAD DISTURBED THE MAT WITHOUT THE OWNER'S KNOWLEDGE.ONE CONSUMER REPORTED THAT THEIR VEHICLE WAS DELIVERED WITHOUT THE RETAINING DEVICES INSTALLED.IN A SEPTEMBER 26, 2007 LETTER TO NHTSA, TOYOTA INDICATED THAT THEY WOULD CONDUCT A SAFETY RECALL TO REPLACE THE ALL WEATHER MAT WITH A REDESIGNED MAT.ACCORDING TO TOYOTA, THE NEW MAT DESIGN WILL REDUCE THE POTENTIAL FOR MAT INTERFERENCE WITH THE THROTTLE PEDAL.THE POPULATION NOTED ABOVE REPRESENTS THE NUMBER OF SUBJECT MATSTHAT HAVE BEEN SOLD IN THE UNITED STATES.SINCE TOYOTA CANNOT IDENTIFY WHICH VEHICLES MAY HAVE THE SUBJECT MATS, THEY WILL SEND A LETTER TO ALL REGISTERED OWNERS OF THE SUBJECT VEHICLES (ESTIMATED 750K) ADVISING THEM OF THE CONCERN AND REMEDY.A COPY OF THAT LETTER WILL BE POSTED TO NHTSA'S WEB SITE UNDER RECALL 07E-082; IT CONTAINS A DESCRIPTION OF THE CONDITION AND THE ACTIONS AN OPERATOR SHOULD TAKE IN THE EVENT THROTTLE ENTRAPMENT OCCURS WHILE DRIVING.THE FATALITY INCIDENT NOTED ABOVE OCCURRED IN JULY 2007 AND WAS INVESTIGATED BY NHTSA'S SPECIAL CRASH INVESTIGATIONS OFFICE.IT HAS NOT BEEN REPORTED ON A VEHICLE OWNER QUESTIONNAIRE.THE OPERATOR REPORTEDLY TRAVELLED AT SPEEDS IN EXCESS OF 100 MPH FOR AN ESTIMATED EIGHT MILES ON AN INTERSTATE IN CALIFORNIA BEFORE IT STRUCK TWO OTHER VEHICLES.ONE OF THE STRUCK VEHICLES AND THE SUBJECT VEHICLE CAUGHT FIRE.THE OCCUPANT OF THE STRUCK VEHICLE DID NOT EVACULATE AND DIED AT THE SCENE.THE SUBJECT VEHICLE DRIVER SUFFERED A BROKEN BONE.THE CALIFORNIA HIGHWAY PATROL IS INVESTIGATING THE INCIDENT ALSO.ODI DID NOT ISSUE AN INFORMATION REQUEST LETTER DURING THIS INVESTIGATION.THE TOYOTA REPORTS NOTED ABOVE WERE REPORTED DURING PRELIMINARY EVALUATION PE07-016 AND ARE CURRENT THROUGH APRIL 2007 FOR MY 2007 LEXUS ES350 ONLY.ODI DOES NOT HAVE FIELD EXPERIENCE DATA FROM TOYOTA FOR CAMRY VEHICLES.THROTTLE ENTRAPMENT DUE TO IMPROPERLY INSTALLED FLOOR MATS COULD BE A CONCERN IN ALL VEHICLES.THEREFORE, DRIVERS SHOULD ALWAYS ENSURE THEIR FLOOR MATS ARE PROPERLY AND SAFELY INSTALLED.THIS INCL