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2002 Nissan Maxima

Owner reports · Recalls · Investigations

More warning signs than most Maxima years

Owner complaints for the 2002 Nissan Maxima are substantially higher than the model-year median of 99.

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When problems were reported

Mileage at the reported incident

128 reports with mileage · 77 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine And Engine Cooling. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Vehicle Speed Control. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

27 crash reports0 fire reports15 injury reports

Exterior Lighting complaints

22 reports
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Mileage unknown · Mar 5, 2025
Air BagsExterior LightingUnknown Or Other

Driving vehicle on road and the accelerator pedal no longer working vehicle. coasted to the side. Car had to be towed. Vehicle cranking without problem but will not accelerate pedal goes to floor. At consideration of purchase of vehicle, car fax and all details about vehicle were viewed for possible purchase. Items on recall …

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Driving vehicle on road and the accelerator pedal no longer working vehicle. coasted to the side. Car had to be towed. Vehicle cranking without problem but will not accelerate pedal goes to floor. At consideration of purchase of vehicle, car fax and all details about vehicle were viewed for possible purchase. Items on recall are now a concern as a safety issue.

NHTSA ODI #11646469

3,450 miles · Jun 22, 2004
Exterior Lighting

MOISTURE DEVELOPED IN THE HEADLIGHTS WHICH COULD CAUSE THE HEADLIGHTS TO MALFUNCTION AT ANYTIME. DEALERSHIP REFUSED TO INSPECT THE VEHICLE TO FIND THE CAUSE OF THE MOISTURE.*AK

NHTSA ODI #10079645

Mileage unknown · Apr 1, 2004
Exterior Lighting

HEADLIGHTS WERE STOLEN SIX TIMES. MANUFACTURER WAS AWARE OF THE PROBLEM. *AK

NHTSA ODI #10065443

Mileage unknown · Mar 26, 2004
Exterior Lighting

ON MARCH 21, THE HEADLIGHTS ON MY NISSAN MAXIMA WERE STOLEN FOR THE SECOND TIME. THE FIRST TIME IT HAPPENED FEW MONTHS AGO. IT'S REALLY DIFFICULT TO PAY A $500 DEDUCTIBLE EVERY TIME THE HEADLIGHTS ARE GOING TO BE STOLEN. I THINK IT'S GOING TO CONTINUE ALL THE TIME. IF I KNEW THE HEADLIGHTS WERE SUCH A TARGET FOR THIEVES, I W…

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ON MARCH 21, THE HEADLIGHTS ON MY NISSAN MAXIMA WERE STOLEN FOR THE SECOND TIME. THE FIRST TIME IT HAPPENED FEW MONTHS AGO. IT'S REALLY DIFFICULT TO PAY A $500 DEDUCTIBLE EVERY TIME THE HEADLIGHTS ARE GOING TO BE STOLEN. I THINK IT'S GOING TO CONTINUE ALL THE TIME. IF I KNEW THE HEADLIGHTS WERE SUCH A TARGET FOR THIEVES, I WOULD HAVE NEVER BOUGHT THE MAXIMA.*AK

NHTSA ODI #10063969

Mileage unknown · Jan 25, 2004
Exterior Lighting

I HAD THE DATADOT ANTI-THEFT DEVICE THAT NISSAN CAME OUT WITH INSTALLED TO PREVENT THE HEADLIGHTS ASSEMBLY THEFT PROBLEM. AND GUESS WHAT, THEY STILL STOLE THE RIGHT SIDE. THE GOOD THING IS THAT THE TRANSFORMER WAS BOLTED TO THE FRAME OF THE CAR AND WAS NOT STOLEN, THE BAD THINGS IS THEY CAUSED MORE DAMAGE TO THE FINDER/HOOD AND …

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I HAD THE DATADOT ANTI-THEFT DEVICE THAT NISSAN CAME OUT WITH INSTALLED TO PREVENT THE HEADLIGHTS ASSEMBLY THEFT PROBLEM. AND GUESS WHAT, THEY STILL STOLE THE RIGHT SIDE. THE GOOD THING IS THAT THE TRANSFORMER WAS BOLTED TO THE FRAME OF THE CAR AND WAS NOT STOLEN, THE BAD THINGS IS THEY CAUSED MORE DAMAGE TO THE FINDER/HOOD AND FRONT BUMPER NOT ONLY THAT, BUT A PORTION OF THE HEADLIGHT ASSEMBLY STAYED IN THE CAR THE DAMAGE WAS $2400.00 FOR ONE HEAD LIGHT WITH BODY WORK. YOU CANT USE YOUR TURN SIGNALS IF A HEADLIGHT IS MISSING VERY VERY UNSAFE AND NISSAN SHOULD BE HELD RESPONSIBLE FOR THIS DESIGN. *LA

NHTSA ODI #10054850

Mileage unknown · Dec 10, 2003
Exterior Lighting

I HOPE NISSAN WOULD TAKE MY HEADACHE AWAY BY TAKING BACK THEIR GARBAGE 2002 MAXIMA, BECAUSE THIS CAR IS A PIECE OF GARBAGE AND NISSAN SHOULD BE A SHAMED OF THEMSELVES TO MANUFACTURE A $750.00 LIGHT WITH TWO PLASTIC BRACKETS THAT MY 7 YEAR OLD SON CAN BREAK OUT OF THE CAR WITHIN (30 SECONDS YES 30 SECONDS) MY XEON LIGHT HAS BEEN …

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I HOPE NISSAN WOULD TAKE MY HEADACHE AWAY BY TAKING BACK THEIR GARBAGE 2002 MAXIMA, BECAUSE THIS CAR IS A PIECE OF GARBAGE AND NISSAN SHOULD BE A SHAMED OF THEMSELVES TO MANUFACTURE A $750.00 LIGHT WITH TWO PLASTIC BRACKETS THAT MY 7 YEAR OLD SON CAN BREAK OUT OF THE CAR WITHIN (30 SECONDS YES 30 SECONDS) MY XEON LIGHT HAS BEEN STOLEN FIVE TIMES (5) FROM JANUARY, MY CAR HAS SIT IN THE NISSAN REPAIR SHIP FOR ABOUT SIX MONTHS OUT OF THE YEAR. COULD NISSAN EXPLAIN THIS OR TRY TO COMPREHEND THIS PROBLEM THAT IT'S CUSTOMERS ARE GOING TROUGH, DO THEY EVEN CARE, NISSAN MAKE FROM ME ALONE 1,500.00 X 5 = 7,500.00 NOT TO MENTION THE OTHER THOUSAND OF PEOPLE THAT IS GOING TROUGH THE SAME PROBLEM. NISSAN SHOULD BE SUED TO FIX THIS PROBLEM, OR REFUND THE DEDUCTIBLES FOR THEIR MANUFACTURING DEFECTS THAT WAS DESIGN FOR THEFT. MY HEADACHE IS NOT GOING AWAY UNTIL I GET RID OF THE CAR OR SUE NISSAN TO SOLVE THIS PROBLEM ALL NISSAN MAXIMAS 202-2003 OWNERS SHOULD SUE NISSAN AND MAYBE THEY WILL DO SOMETHING OR ALL COME TOGETHER AND FILE A CLASS AUCTION SUIT AGAINST NISSAN PLEASE! PLEASE! PLEASE!!! DO SO ASAP. I ACTUALLY WENT AND BOUGHT INFRARED CAMERAS TO MONITOR MY CAR SO MAYBE I CAN CATCH WHO IS STEALING THE LIGHTS, THIS IS REALLY BAD THANKS FOR LISTENING. *LA

NHTSA ODI #10049499

15,000 miles · Dec 9, 2003
Exterior Lighting

HEADLIGHTS WERE STOLEN TWICE. HEADLIGHTS COULD BE STOLEN IN JUST A MATTER OF MINUTES. VEHICLE HAD NO INSURANCE TO COVER STOLEN PARTS. *AK

NHTSA ODI #10050300

12,700 miles · Dec 2, 2003
Exterior LightingLatches/locks/linkages

HEADLIGHTS WERE STOLEN FROM THE VEHICLE. DAMAGE WAS DONE TO THE ELECTRICAL SYSTEM/HOOD AND BUMPER. THE BRACKETS HOLDING EACH $724 LIGHT WERE MADE OF PLASTIC AND COULD EASILY BE SNAPPED OR BROKEN. *AK *TT

NHTSA ODI #10044983

17,000 miles · Nov 5, 2003
Exterior Lighting

HEADLIGHTS WERE STOLEN 3 TIMES WHILE VEHICLE WAS PARKED, PER CONSUMER.*AK

NHTSA ODI #10046399

17,000 miles · Oct 29, 2003
Exterior Lighting

I LEASE A 2002 NISSAN MAXIMA. THIS CAR HAS A KNOWN ISSUE REGARDING ITS HEADLIGHTS. THE ISSUE IS 1) THE HEADLIGHTS ARE VERY EXPENSIVE 2) THEY ARE, THEREFORE, WELL-LIKED BY THIEVES AND 3) THEY ARE VERY EASY TO STEAL. AS A RESULT, THEY ARE STOLEN FREQUENTLY. ONE HEADLIGHT ASSEMBLY WAS STOLEN FROM MY CAR LAST WEEK. THE CAR IS NOT R…

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I LEASE A 2002 NISSAN MAXIMA. THIS CAR HAS A KNOWN ISSUE REGARDING ITS HEADLIGHTS. THE ISSUE IS 1) THE HEADLIGHTS ARE VERY EXPENSIVE 2) THEY ARE, THEREFORE, WELL-LIKED BY THIEVES AND 3) THEY ARE VERY EASY TO STEAL. AS A RESULT, THEY ARE STOLEN FREQUENTLY. ONE HEADLIGHT ASSEMBLY WAS STOLEN FROM MY CAR LAST WEEK. THE CAR IS NOT ROADWORTHY WITHOUT IT. BLINKERS DON'T WORK. IF ONE HAS NO CHOICE BUT TO DRIVE TO A BODY SHOP, IF THE HOUR IS LATE, IF ONE IS IN AN UNSAFE NEIGHBORHOOD, THE CAR MUST BE DRIVEN IN SUCH CONDITION. THIS IS A DESIGN DEFECT THAT SHOULD HAVE CAUSED NISSAN TO RECALL THIS MODEL LONG AGO. *LA

NHTSA ODI #10043864

Official recalls

6

20V008000 · Air Bags:frontal:passenger Side:inflator Module

Jan 9, 2020

Nissan North America, Inc. (Nissan) is recalling certain 2001-2003 Maxima, 2002-2006 Sentra, 2002-2004 Pathfinder, 2007-2011 Versa Sedan and Versa Hatchback, 2001-2004 Infiniti I30 and I35, 2002-2003 Inifiniti QX4, 2003-2008 Infiniti FX35 and FX45 and 2006-2010 M35 and M45 vehicles. The vehicles are equipped with non-desiccated, frontal passenger air bag inflators containing phase stabilized ammonium nitrate (PSAN) propellant that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Nissan will notify owners, and dealers will replace the front passenger air bag inflators with alternate desiccated inflators, free of charge. The recall began February 12, 2020. Owners may contact Nissan customer service at 888-737-9511 or Infiniti customer service at 888-810-3715.

15V287000 · Air Bags

May 15, 2015

Nissan North America, Inc. (Nissan) is recalling certain model year 2001-2003 Nissan Maxima, 2002-2004 Pathfinder, 2002-2006 Sentra, 2002-2003 Infiniti QX4 and I35, 2003 FX35 and FX45, and 2001 I30 vehicles. Upon deployment of the passenger side frontal air bag, excessive internal pressure may cause the inflator to rupture.

Consequence & remedy

Consequence: In the event of a crash necessitating deployment of the passenger's frontal air bag, the inflator could rupture with metal fragments striking the vehicle occupants potentially resulting in serious injury or death.

Remedy: Nissan will notify owners, and dealers will replace the passenger air bag inflator, free of charge. The recall began on June 15, 2015. Owners may contact Nissan customer service at 1-800-647-7261. Note: On December 18, 2015 Nissan informed NHTSA of an amendment of this recall to remove 2004-2005 Infiniti FX35 and FX45 vehicles.

03V455000 · Engine And Engine Cooling

Nov 17, 2003

ON CERTAIN PASSENGER VEHICLES, THE CIRCUIT BOARD FOR THE CRANK POSITION SENSOR OR CAM POSITION SENSOR MAY HAVE AN IMPROPER SOLDER JOINT DUE TO SOLDER DEFORMATION CAUSED BY HEAT STRESS ACCELERATED BY THE EXISTENCE OF FLUX RESIDUE DURING THE SOLDERING PROCESS.

Consequence & remedy

Consequence: THIS COULD CAUSE THE "SERVICE ENGINE SOON" WARNING LIGHT TO COME ON, CREATE A NO START CONDITION, CAUSE REDUCED ENGINE POWER, OR CAUSE THE ENGINE TO STOP RUNNING WITHOUT WARNING DURING VEHICLE OPERATION, WHICH COULD RESULT IN A CRASH.

Remedy: DEALERS WILL REPLACE THE CRANK POSITION SENSORS. CAMSHAFT POSITION SENSOR(S), AND IN SOME CASES, THE VARIABLE TIMING CONTROL SENSOR(S). VEHICLES INVOLVED IN A PREVIOUS RECALL CAMPAIGN, 01V357, ARE ALSO INCLUDED IN THIS NEW CAMPAIGN. THE REPLACEMENT SENSORS USED IN THAT CAMPAIGN ARE ALSO AFFECTED. OWNER NOTIFICATION BEGAN ON DECEMBER 22, 2003. OWNERS SHOULD CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

02V146000 · Suspension:front:control Arm:lower Arm

May 30, 2002

ON CERTAIN PASSENGER VEHICLES, THE PIN AT THE END OF THE FRONT SUSPENSION TRANSVERSE LINK (LOWER CONTROL ARM) COULD BREAK WHERE IT IS MOUNTED TO THE FRAME.

Consequence & remedy

Consequence: THIS CAN CAUSE A KNOCKING SOUND AND ABNORMAL STEERING. THIS COULD RESULT IN DIFFICULTY CONTROLLING THE VEHICLE AND INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE TRANSVERSE LINKS ON THE LEFT AND RIGHT SIDES WITH NEW ONES. OWNER NOTIFICATION BEGAN JULY 29, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

02V043000 · Vehicle Speed Control

Feb 12, 2002

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH AN ELECTRONIC THROTTLE CONTROL SYSTEM, THE STOPPER FOR THE ACCELERATOR PEDAL WILL PREVENT EXCESSIVE MOVEMENT OF THE ACCELERATOR POSITION SENSOR. IF THE DRIVER APPLIES OVERLY EXCESSIVE FORCE TO THE ACCELERATOR PEDAL WHILE AT THE SAME TIME PUSHING IT TO THE RIGHT, THE PEDAL CAN "OVER TRAVEL" DUE TO THE DESIGN OF THE PEDAL STOPPER.

Consequence & remedy

Consequence: THIS WILL CAUSE THE ENGINE MALFUNCTION INDICATOR LAMP TO COME ON AND THE ENGINE SPEED TO BE SEVERELY LIMITED. IF THIS OCCURS UNEXPECTEDLY, IT COULD LEAD TO A CRASH.

Remedy: DEALERS WILL INSTALL A NEW ACCELERATOR PEDAL STOPPER. OWNER NOTIFICATION BEGAN MARCH 11, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 800-662-6200.

02V010000 · Power Train

Jan 11, 2002

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH A TRACTION CONTROL SYSTEM, THE ODOMETER IN THE SUBJECT VEHICLES REGISTERS DISTANCE IN KILOMETERS INSTEAD OF MILES AS IS SPECIFIED IN THE DESIGN. THE ODOMETER DOES NOT HAVE A LABEL THAT INDICATES "KILOMETERS" OR "KM" AS REQUIRED BY FMVSS NO. 101, "CONTROLS AND DISPLAYS."

Consequence & remedy

Consequence: Not supplied

Remedy: DEALERS WILL INSPECT THE ODOMETER TO DETERMINE IF IT IS CORRECT AND, IF NOT, WILL REPLACE THE SPEEDOMETER/ODOMETER ASSEMBLY. OWNER NOTIFICATION BEGAN DECEMBER 12, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NISSAN AT 1-800-647-7261.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

EA21002 · Desiccated Air Bag Inflator Rupture

Opened Sep 17, 2021 · No close date supplied

Status: open (inferred from source dates) · Air Bags:frontal:driver Side:inflator Module; Air Bags:frontal:passenger Side:inflator Module

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.

Additional source detail variants (2)

Air Bags:frontal:driver Side:inflator Module

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.

Air Bags:frontal:passenger Side:inflator Module

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.