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2015 Subaru Legacy

Owner reports · Recalls · Investigations

More warning signs than most Legacy years

Owner complaints for the 2015 Subaru Legacy are substantially higher than the model-year median of 77.

About this comparison →

When problems were reported

Mileage at the reported incident

104 reports with mileage · 55 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.

  • Electrical System. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Visibility/wiper. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. 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.

15 crash reports3 fire reports7 injury reports

What owners actually said

159 reports
Mileage unknown · Nov 28, 2020
Unknown Or Other

I HAVE VERY SMALL CHIPS ALL OVER THE WINDSHIELD

NHTSA ODI #11376807

26,433 miles · Nov 7, 2020
Back Over PreventionLane DepartureVisibility/wiper

SITTING IN PARKED VEHICLE, MOTOR OFF, WINDOWS DOWN HEARD A QUICK POPPING SOUND. I LOOKED SITTING IN PARKED VEHICLE, ENGINE OFF, WINDOWS DOWN, HEARD A QUICK POPPING NOISE. A QUICK INSPECTION, LOOKING AROUND SAW NOTHING. ABOUT 20 MINUTES LATER DRIVING HOME, TOP SPEED 35 MPH, ON A LOCAL COMMUNITY ROAD, SAW A HAIRPIN CRACK STARTI…

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SITTING IN PARKED VEHICLE, MOTOR OFF, WINDOWS DOWN HEARD A QUICK POPPING SOUND. I LOOKED SITTING IN PARKED VEHICLE, ENGINE OFF, WINDOWS DOWN, HEARD A QUICK POPPING NOISE. A QUICK INSPECTION, LOOKING AROUND SAW NOTHING. ABOUT 20 MINUTES LATER DRIVING HOME, TOP SPEED 35 MPH, ON A LOCAL COMMUNITY ROAD, SAW A HAIRPIN CRACK STARTING FROM BOTTOM OF WINDOW, DRIVER'S SIDE, GOING UP ACROSS WINDSHIELD AND MIDWAY ACROSS. THE WINDOW WAS CLEAR EXCEPT FOR CRACK. CALLED A REPUTABLE COMPANY TO SCHEDULE APPOINTMENT. THE REPRESENTATIVE SUGGESTED I CALL THE SUBARU MAINTENANCE DEPARTMENT AS PREVIOUS SUBARU CUSTOMERS HAD RECALL ON WINDSHIELD. I CALL TO LEARN VIN NOT A RECALL. I AM EXTREMELY HAPPY WITH MY SUBARU. I HAVE TAKEN THE VEHICLE BACK TO THE SUBARU DEALER FROM WHOM I PURCHASED EVERY SIX MONTH FOR OIL CHANGE AND ALL RECOMMENDED MILEAGE MAINTENANCE INSPECTION. DUE TO LOW MILEAGE, 26,433, COULD IT BE POSSIBLE THE WINDSHIELD MAY BE DEFECTIVE? THANKING YOU IN ADVANCE FOR A QUICK RESPONSE.😊

NHTSA ODI #11373614

66,000 miles · Oct 2, 2020
StructureUnknown Or OtherCrash

I PARKED MY CAR ON A ROAD (NEIGHBORHOOD) WITH A SLIGHT INCLINE. I WENT AROUND IN FRONT OF IT TO LOOK AT AN ITEM FOR SALE (SMALLL PINK PIANO) IN THE YARD. I LOOKED AT THE ITEM, THEN HEARD MY CAR TAKE OFF. I TRIED TO RUN TO GET INTO IT TO STOP IT, BUT IT WAS GOING TOO FAST. IT ENDED UP GOING TO THE RIGHT AND RUNNING INTO THE …

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I PARKED MY CAR ON A ROAD (NEIGHBORHOOD) WITH A SLIGHT INCLINE. I WENT AROUND IN FRONT OF IT TO LOOK AT AN ITEM FOR SALE (SMALLL PINK PIANO) IN THE YARD. I LOOKED AT THE ITEM, THEN HEARD MY CAR TAKE OFF. I TRIED TO RUN TO GET INTO IT TO STOP IT, BUT IT WAS GOING TOO FAST. IT ENDED UP GOING TO THE RIGHT AND RUNNING INTO THE GARAGE OF THE HOUSE I WAS NEAR. IT HIT THE LEFT HAND SIDE OF THE GARAGE AND CONTINUED INTO THE GARAGE WHERE IT WAS STOPPED BY SOME PAINT CANS PILED UP AND THE BACK OF THE GARAGE. THE MAN WHO LIVED IN THE HOUSE WAS ABLE TO SQUEEZE INTO THE DRIVERS SIDE AND BACK IT OUT - I DROVE IT HOME (ABOUT 2 BLOCKS). MY INSURANCE COMPANY CAME OUT AND ESTIMATED THE DAMAGE AT ABOUT $4500, BUT THEY HAVE NOT LOOKED UNDERNEATH OR AT THE MECHANICS. SUBARU IS INVESTIGATING. PICTURES ARE TOO BIG TO UPLOAD

NHTSA ODI #11362363

34,000 miles · May 3, 2020
Suspension

VEHICLE ONLY HAS 34,000 AND FRONT HUB BEARING ASSEMBLY NEEDS TO BE REPLACED. THERE IS A GRAND ING NOISE COMING FROM BOTH FRONT SIDES AT SPEEDS ABOVE 35 MPH, AND GETS LOUDER WHEN VEHICLE TURNS TO THE LEFT.

NHTSA ODI #11323119

55,000 miles · Apr 19, 2020
Wheels

ESPECIALLY, WHILE DRIVING ON THE HIGHWAY, I COULD HEAR THE UNUSUAL SPINNING OF THE WHEELS. IT HAPPENED ABOUT A YEAR AGO, AND WHEN I BROUGHT IT TO THE ATTENTION OF THE FRONT DESK CLERK AT THE QUALITY SUBARU IN WALLINGFORD, CT., HE INFORMED ME THAT HE WILL LET THE TECHNICIAN KNOW. HE NEVER WROTE ANYTHING REGARDING MY CONCERNS ON T…

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ESPECIALLY, WHILE DRIVING ON THE HIGHWAY, I COULD HEAR THE UNUSUAL SPINNING OF THE WHEELS. IT HAPPENED ABOUT A YEAR AGO, AND WHEN I BROUGHT IT TO THE ATTENTION OF THE FRONT DESK CLERK AT THE QUALITY SUBARU IN WALLINGFORD, CT., HE INFORMED ME THAT HE WILL LET THE TECHNICIAN KNOW. HE NEVER WROTE ANYTHING REGARDING MY CONCERNS ON THE SLIP WITH THE OIL CHANGE INFORMATION. THE TECHNICIAN SAID, THAT HE DID NOT SEE ANYTHING WRONG WITH IT, IT COULD BE THE SURFACE OF THE HIGHWAY OR MY TIRES. I PURCHASED NEW TIRES, INSTALL NEW BRAKES AND THE NOISE WAS STILL THERE. ON FEBRUARY 25, 2020, I WENT THROUGH ANOTHER MULTIPOINT INSPECTION, AND THIS TIME, THE TECHNICIAN FOUND BOTH REAR WHEEL BEARINGS NOISY AND RECOMMENDED REPLACING THEM FOR $1155.OO PLUS TAX AND MY CAR HAD 69057 MILES. MY COMPLAINT IS THAT THE SAME NOISE WAS THERE ABOUT A YEAR AGO WHEN MY CAR WAS 55000 MILES AND I KIND OF USED TO THIS NOISE. PLEASE MAKE A NOTE OF IT. THANK YOU.

NHTSA ODI #11321574

18,000 miles · Mar 14, 2020
Unknown Or Other

WHILE DRIVING ON THE FREEWAY MY WINDSHIELD BROKE FOR NO APPARENT REASON.

NHTSA ODI #11318011

60,000 miles · Feb 22, 2020
Visibility/wiper

THE WINDSHIELD IS DEFECTIVE. IT SEEMS TO CRACK AND CHIP WITH ANY IMPACT AT ALL. ROAD SALT AT CITY SPEEDS HAS CAUSED CHIPS. I HAVE HAD THE WINDSHIELD REPLACED AND THE REPLACEMENT SUBARU GLASS IS ALSO DEFECTIVE.

NHTSA ODI #11310735

188,000 miles · Jan 31, 2020
Electronic Stability Control (esc)Power TrainService Brakes

THE AT OIL TEMP AND BRAKE LIGHT RANDOMLY START FLASHING AND KICK YOUR CAR OFF CRUISE WITHOUT ANY CHECK ENGINE LIGHT THE TRANSMISSION FLUID AND OIL TEMP ARE NOT HOT BUT CAUSES THE CAR TO LOSE POWER. ALMOST BEEN REAR ENDED ON THE FREE WAY DUE TO THIS HAPPENING DEALERSHIP DOES NOT KNOW WHAT CAUSES THIS DUE TO IT NOT ALWAYS HAPPENI…

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THE AT OIL TEMP AND BRAKE LIGHT RANDOMLY START FLASHING AND KICK YOUR CAR OFF CRUISE WITHOUT ANY CHECK ENGINE LIGHT THE TRANSMISSION FLUID AND OIL TEMP ARE NOT HOT BUT CAUSES THE CAR TO LOSE POWER. ALMOST BEEN REAR ENDED ON THE FREE WAY DUE TO THIS HAPPENING DEALERSHIP DOES NOT KNOW WHAT CAUSES THIS DUE TO IT NOT ALWAYS HAPPENING AND THE LIGHTS GO OFF AFTER SHUTTING THE CAR OFF AND BACK ON AGAIN MULTIPLE PEOPLE HAVE THIS PROBLEM WITH NO RESOLUTION. I AM A HUGE SUBARU FAN BUT WILL LOOK ELSE WHERE IF SUBARU DOESN'T START FIXING THEIR MISTAKES,

NHTSA ODI #11306247

76,000 miles · Dec 13, 2019
Engine

STRONG EXHAUST FUME SMELL INVADES CABIN WHILE IDLE, EVERYDAY AND IT'S GETTING STRONGER NO LEAKS DETECTED

NHTSA ODI #11288960

53,000 miles · Oct 14, 2019
Visibility/wiper

WINDSHIELD CRACK (2ND TIME) FROM BOTTOM RIGHT CORNER OF PASSENGER SIDE. VEHICLE WAS STATIONARY.

NHTSA ODI #11268322

Official recalls

3

16V251000 · Electronic Stability Control (esc)

Apr 27, 2016

Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy and Outback vehicles manufactured on July 20, 2015. The brake fluid used in these vehicles may contain excess moisture which may adversely affect the performance of the electronic stability control system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 126, "Electronic Stability Control Systems."

Consequence & remedy

Consequence: Poor performance of the electronic stability control system when it is activated may result in a loss of vehicle control, increasing the risk of a crash.

Remedy: Subaru will notify owners, and dealers will perform an ABS activation, then flush and replace the brake fluid, free of charge. The recall began on May 20, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTC-64.

15V502000 · Power Train:automatic Transmission; Power Train:driveline:driveshaft

Aug 10, 2015

Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.

Consequence & remedy

Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.

Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.

Additional source detail variants (2)

Power Train:driveline:driveshaft

Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.

Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.

Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.

Power Train:automatic Transmission

Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.

Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.

Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.

15V366000 · Exterior Lighting:brake Lights:switch; Forward Collision Avoidance: Crash Imminent Braking

Jun 12, 2015

Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy vehicles manufactured March 10, 2014, to April 16, 2015, Outback vehicles manufactured February 24, 2014, to April 16, 2015, Impreza vehicles manufactured September 9, 2014, to April 14, 2015, XV Crosstrek vehicles manufactured October 16, 2014, to April 15, 2015, and 2016 WRX vehicles manufactured March 23, 2015, and equipped with the Eyesight Driver Assist System. If the switch that activates the brake lights fails, the automatic pre-collision braking component of the driver assist system will not function.

Consequence & remedy

Consequence: If the automatic pre-collision braking system does not function as intended, the vehicle will not react to an obstacle in its path, increasing the risk of a crash.

Remedy: Subaru will notify owners, and dealers will reprogram the driver assist system, free of charge. The recall began on July 20, 2015. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WQS-54.

Additional source detail variants (2)

Forward Collision Avoidance: Crash Imminent Braking

Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy vehicles manufactured March 10, 2014, to April 16, 2015, Outback vehicles manufactured February 24, 2014, to April 16, 2015, Impreza vehicles manufactured September 9, 2014, to April 14, 2015, XV Crosstrek vehicles manufactured October 16, 2014, to April 15, 2015, and 2016 WRX vehicles manufactured March 23, 2015, and equipped with the Eyesight Driver Assist System. If the switch that activates the brake lights fails, the automatic pre-collision braking component of the driver assist system will not function.

Consequence: If the automatic pre-collision braking system does not function as intended, the vehicle will not react to an obstacle in its path, increasing the risk of a crash.

Remedy: Subaru will notify owners, and dealers will reprogram the driver assist system, free of charge. The recall began on July 20, 2015. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WQS-54.

Exterior Lighting:brake Lights:switch

Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy vehicles manufactured March 10, 2014, to April 16, 2015, Outback vehicles manufactured February 24, 2014, to April 16, 2015, Impreza vehicles manufactured September 9, 2014, to April 14, 2015, XV Crosstrek vehicles manufactured October 16, 2014, to April 15, 2015, and 2016 WRX vehicles manufactured March 23, 2015, and equipped with the Eyesight Driver Assist System. If the switch that activates the brake lights fails, the automatic pre-collision braking component of the driver assist system will not function.

Consequence: If the automatic pre-collision braking system does not function as intended, the vehicle will not react to an obstacle in its path, increasing the risk of a crash.

Remedy: Subaru will notify owners, and dealers will reprogram the driver assist system, free of charge. The recall began on July 20, 2015. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WQS-54.

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.