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2015 Subaru Outback

Owner reports · Recalls · Investigations

More warning signs than most Outback years

Owner complaints for the 2015 Subaru Outback are substantially higher than the model-year median of 207.5.

About this comparison →

When problems were reported

Mileage at the reported incident

343 reports with mileage · 167 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.

  • Visibility/wiper. Review the 130 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 127 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 47 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

20 crash reports5 fire reports13 injury reports

What owners actually said

510 reports
Mileage unknown · Aug 31, 2023
Power TrainSeatsSteering

Driver's seat started peeling off approximately a year after purchase. Notified dealer, they said to contact Subaru of America via social media. Now almost all peeled off, have to cover with towel possibly interfering with airbags. Steering column lock will not lock in top position. Dealer repaired once under warranty, now out o…

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Driver's seat started peeling off approximately a year after purchase. Notified dealer, they said to contact Subaru of America via social media. Now almost all peeled off, have to cover with towel possibly interfering with airbags. Steering column lock will not lock in top position. Dealer repaired once under warranty, now out of warranty. Unsafe when column moves when driving. Transmission started slipping or behaving strangely around 90,000 miles. Never received notice of extended warranty I read about on Subaru forums [XXX] ) Paid $531.43 for fluid change at dealership because of the problem on 7/27/23 and no mention was made about extended warranty. It has not solved the problem. If transmission fails, that is a safety problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11541975

Mileage unknown · Aug 17, 2023
Electrical SystemEngine

#1. I replaced the battery in June of 2022 after all the dash warning lights came on. My eyesight safety feature was rendered in operative. After the battery was replaced, all the warning lights eventually went out. In July of 2023 the same scenario happened again. I returned to Advance Auto retailer and the store manager c…

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#1. I replaced the battery in June of 2022 after all the dash warning lights came on. My eyesight safety feature was rendered in operative. After the battery was replaced, all the warning lights eventually went out. In July of 2023 the same scenario happened again. I returned to Advance Auto retailer and the store manager checked the battery. She replaced the battery with a new one of greater cold cranking amps. she was most knowledgeable and extraordinarily gracious. I asked her to check the alternator for proper function and was told it was functioning as it should. #2. On June 07, 2023, I took the automobile in for service: oil and filter change and brake pads and rotors on all four wheels. My Subaru had 68,482 miles on this date. The technician (who previously was employed by a local Subaru dealership) noticed that the engine was leaking oil and diagnosed the timing cover gasket was leaking oil. Oil leaking would contribute to the bad smells entering the passenger compartment. The gasket and three seals were replaced at a cost of $1329.94 plus 8% tax. Online research reveals that Subaru"s boxer engine suffers chronic oil consumption and seal problems. Subaru of America relies on the consumer to eat any repairs rather than fix the problem that has been going on for years.

NHTSA ODI #11539168

Mileage unknown · Jul 18, 2023
Visibility

The contact owns a 2015 Subaru Outback. The contact stated that while driving 50 MPH, the sunroof glass exploded. There was no impact to the sunroof that could have caused the sunroof glass to explode. The shards of glass from the sunroof fell onto the contact, his wife, and his son; however, no injuries were sustained, and medi…

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The contact owns a 2015 Subaru Outback. The contact stated that while driving 50 MPH, the sunroof glass exploded. There was no impact to the sunroof that could have caused the sunroof glass to explode. The shards of glass from the sunroof fell onto the contact, his wife, and his son; however, no injuries were sustained, and medical attention was not received. The vehicle was taken to an independent mechanic, who replaced the sunroof glass. The manufacturer was not made aware of the failure. The failure mileage was unknown.

NHTSA ODI #11533057

Mileage unknown · Jun 26, 2023
Air BagsElectrical System

There's a problem in a part called (clock spring/roll connector) that is responsible for the horn on steering wheel. It affects almost all Subaru models, like Outback, Forester, Legacy... I've verified it in a mechanic shop, and after all the tests of fuses, horn, and everything. They say the problem is the clock spring, a part …

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There's a problem in a part called (clock spring/roll connector) that is responsible for the horn on steering wheel. It affects almost all Subaru models, like Outback, Forester, Legacy... I've verified it in a mechanic shop, and after all the tests of fuses, horn, and everything. They say the problem is the clock spring, a part that goes after the air bag and costs around $130 plus service ($150 minimum) to change. Then I research on internet and found out it's a very common problem with a lot of videos on YouTube of people having the same issue and a lot of comments there of more people complaining about it that it should have a recall cause it's a security part. I couldn't use my horn when another driver almost hit me, that's how I figured out that my horn died. Those are just some of the videos with this related problem. There's a lot more on YouTube and a lot of posts on Internet forums as well: https://youtu.be/E73ao9zRCUM https://youtu.be/vDxvafmQ6Qg https://youtu.be/plbtVX2WZWw https://youtu.be/YIwl5AmhfQ0 https://youtu.be/ZR5Qq3zufRc

NHTSA ODI #11529015

Mileage unknown · Jun 23, 2023
Back Over PreventionLane Departure

SVRD disabled

NHTSA ODI #11528589

80,700 miles · Jun 22, 2023
EngineService Brakes

The contact owns a 2015 Subaru Outback. The contact stated that while driving 67 MPH with the cruise control activated, the vehicle suddenly decelerated to approximately 25-30 MPH while depressing the brake pedal. The contact stated that the vehicle stalled. After pulling over to the side of the roadway, the contact was able to …

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The contact owns a 2015 Subaru Outback. The contact stated that while driving 67 MPH with the cruise control activated, the vehicle suddenly decelerated to approximately 25-30 MPH while depressing the brake pedal. The contact stated that the vehicle stalled. After pulling over to the side of the roadway, the contact was able to restart the vehicle and drove to the residence. The vehicle was taken to the dealer however, the cause of the failure could not be determined. The contact's wife stated that the failure had occurred a year prior while driving approximately 55 MPH. The failure only lasted for several seconds. The vehicle had not been diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 80,700.

NHTSA ODI #11528332

Mileage unknown · May 26, 2023
Service Brakes

The issue below has occurred previously and was addressed by a completed recall "EPB Reprogramming" - WTB63. However, issue has reappeared. Issue: The parking brake engages without engaging parking brake switch while parked and also blinks a red warning while driving. We had an issue a few days ago where brake engaged by its…

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The issue below has occurred previously and was addressed by a completed recall "EPB Reprogramming" - WTB63. However, issue has reappeared. Issue: The parking brake engages without engaging parking brake switch while parked and also blinks a red warning while driving. We had an issue a few days ago where brake engaged by itself in parking lot (even though parking brake light never came on). I managed to get the car out of park by turning the car on and off several times and also pressing parking brake switch. The car is scheduled for Subaru service on 5 June, they will be able to do more diagnostics after reading error codes. The dealer told me that parking brake should not engage while driving which is my main concern...but I'm also concerned about possibility of being stranded somewhere because I cannot turn off the parking brake.

NHTSA ODI #11524016

Mileage unknown · May 18, 2023
Wheels

Wheel Lug bolts continue to snap off. Have had 5 so far and this could effect the ability of the wheel to stay attached to the vehicle. I have several friends with the same vehicle (different years) that have had the same issue multiple times. In 50 years of vehicle ownership have never had this happen once, let alone 5 times.

NHTSA ODI #11522605

Mileage unknown · Apr 24, 2023
Lane DeparturePower TrainSteering

CONSTANT CHECK ENGINE, NO ADAS FUNCTIONS AND MULTIPLE CODES AND HUD INDICATORS INCLUDING CKENGNE, XMODE FLASHING, ADAS DISABLE AND MAJOR ELECRTICAL PARASITIC DRAW AND TRANSMISSION AND OVERHEATING. I believe the past major leg relay was replaced during first recall, it was not performed correctly and tied into accesssorry aux int…

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CONSTANT CHECK ENGINE, NO ADAS FUNCTIONS AND MULTIPLE CODES AND HUD INDICATORS INCLUDING CKENGNE, XMODE FLASHING, ADAS DISABLE AND MAJOR ELECRTICAL PARASITIC DRAW AND TRANSMISSION AND OVERHEATING. I believe the past major leg relay was replaced during first recall, it was not performed correctly and tied into accesssorry aux into same wiring. defrost/ ac failure and clutch hums upon shutting down

NHTSA ODI #11518655

Mileage unknown · Apr 14, 2023
Unknown Or Other

The child safety lock on the passenger side will not disengage. Our child is old enough now to operate the door safely but she cannot open the door from the inside. I feel that this is a great safety concern and the dealer should take care of the cost. When we asked if it could be fixed the dealer expressed that it would be o…

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The child safety lock on the passenger side will not disengage. Our child is old enough now to operate the door safely but she cannot open the door from the inside. I feel that this is a great safety concern and the dealer should take care of the cost. When we asked if it could be fixed the dealer expressed that it would be on us for all charges. This is a manufacturer defect and should be rectified immediately. Thank you.

NHTSA ODI #11517034

Official recalls

5

16V292000 · Steering:column

May 11, 2016

Subaru of America, Inc. (Subaru) is recalling certain model year 2016-2017 Legacy and Outback vehicles manufactured February 29, 2016, to May 6, 2016. The steering column on the affected vehicles may have been improperly machined, and as a result, turning the steering wheel may have no effect on the direction of the wheels.

Consequence & remedy

Consequence: The loss of steering ability would increase the risk of a crash.

Remedy: Subaru will notify owners, and dealers will inspect the lot number on the steering column, replacing the steering column, as necessary, free of charge. The recall began May 13, 2016. Owners may contact Subaru customer service at 1-800-782-2783 or by visiting http://www.wtd65.service-campaign.com. Subaru's number for this recall is WTD-65. Note: Until the vehicles have been inspected, owners are advised not to drive their vehicles.

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.

14V577000 · Trailer Hitches

Sep 19, 2014

Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Outback vehicles manufactured January 22, 2014, to August 18, 2014, and equipped with a Subaru accessory trailer hitch assembly. During installation, the trailer hitch mounting nuts may have been overtightened, potentially resulting in failure of the trailer hitch mounting studs.

Consequence & remedy

Consequence: The mounting nut(s) may not provide sufficient force to remain attached to the studs or the studs themselves might break. If this were to happen while a trailer is being towed, the driver might not be able to operate the vehicle as desired or the trailer may detach from the vehicle. Either situation could increase the risk of a crash.

Remedy: Subaru will notify owners, and dealers will replace all eight mounting nuts for the trailer hitch assembly, and will inspect all eight mounting studs for damage, free of charge. The recall began on October 7, 2014. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WQN-50.

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.

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