IllustrationWINDSHIELD SPONTANEOUSLY CRACKED. I HAVE DASHCAM FOOTAGE SHOWING BEFORE AND AFTER THE FORMATION OF THE CRACK. THERE WAS NO IMPACT OF ANY OBJECT TO CAUSE THE CRACK OVER ANY PERIOD OF TIME.
2016 Subaru Outback
Owner reports · Recalls · Investigations
More warning signs than most Outback years
Owner complaints for the 2016 Subaru Outback are substantially higher than the model-year median of 207.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Outback years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
1290–25K
10925–50K
7450–75K
2075–100K
15100–150K
4150K+
351 reports with mileage · 292 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 309 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility/wiper. Review the 83 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
22 crash reports3 fire reports8 injury reports
Structure complaints
19 reportsDURING A 75 MPH DRIVE ON AN INTERSTATE HWY THE MOONROOF EXPLODED. DUE TO CIRCUMSTANCES WE COULD NOT VISIT A DEALER AND WERE COMPELLED TO TAPE A TEMPORARY COVER TO THE VEHICLE TO LIMIT WIND NOISE. LATER IN THE TRIP RAIN OCCURRED, WHICH LEAKED INTO THE VEHICLE DAMAGING THE INTERIOR.
ON 09/19/2017 I HAVE BROUGHT OUR VEHICLE TO LITHIA RENO SUBARU FOR SERVICE ON THE FRONT PASSENGER DOOR PANEL. WHEN THE DOOR HANDLE WAS PULLED ON WHILE CLOSING THE DOOR, THE DOOR PANEL PULLED IN EXCESSIVELY. LITHIA RENO SUBARU DETERMINED THAT THREE SCREWS WERE MISSING ON INNER DOOR PANEL. I BELIEVE THIS DEFECT EXISTED FROM THE TI…
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ON 09/19/2017 I HAVE BROUGHT OUR VEHICLE TO LITHIA RENO SUBARU FOR SERVICE ON THE FRONT PASSENGER DOOR PANEL. WHEN THE DOOR HANDLE WAS PULLED ON WHILE CLOSING THE DOOR, THE DOOR PANEL PULLED IN EXCESSIVELY. LITHIA RENO SUBARU DETERMINED THAT THREE SCREWS WERE MISSING ON INNER DOOR PANEL. I BELIEVE THIS DEFECT EXISTED FROM THE TIME THE VEHICLE WAS FIRST ASSEMBLED AT THE FACTORY. THIS DEFECT WAS NOT COVERED BY MANUFACTURER WARRANTY.
HIT DEER WITH RIGHT FRONT FENDER AT ABOUT 40 MPH ON A DRY, STRAIGHT HWY. IMPACT WAS MINOR, SHEET METAL DAMAGE ONLY,NO FLUID LOSS OR SUSPENSION SYSTEM DAMAGE BUT AIR BAGS DEPLOYED VIOLENTLY, MUCH SMOKE. SIDE AIR BAGS DID NOT DEFLATE MAKING IT VERY DIFFICULT TO EXIT VEHICLE. AIRBAG IMPACT ON LEFT EAR HAS DAMAGED HEARING, PROBABLY …
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HIT DEER WITH RIGHT FRONT FENDER AT ABOUT 40 MPH ON A DRY, STRAIGHT HWY. IMPACT WAS MINOR, SHEET METAL DAMAGE ONLY,NO FLUID LOSS OR SUSPENSION SYSTEM DAMAGE BUT AIR BAGS DEPLOYED VIOLENTLY, MUCH SMOKE. SIDE AIR BAGS DID NOT DEFLATE MAKING IT VERY DIFFICULT TO EXIT VEHICLE. AIRBAG IMPACT ON LEFT EAR HAS DAMAGED HEARING, PROBABLY PERMANENTLY. CLEARWATER COUNTY IDAHO SHERIFFS OFFICE CASE NUMBER P2017-00350.
DRIVER'S SIDE DOOR CRACKED-OPEN UNEXPECTEDLY WHEN VEHICLE WAS IN MOTION (DOOR WAS CAUGHT BY LATCH, PREVENTING IT FROM SWINGING OPEN FULLY). ISSUE FIRST OCCURRED AT AROUND 4000MI IN EARLY OCTOBER 2016 WHEN TRAVELING ON I278 EASTBOUND AT 50MPH. DRIVER THOUGHT SOMETHING WAS STUCK IN DOORJAMB. ISSUE REOCCURRED AT 4500MI IN MID OCTOB…
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DRIVER'S SIDE DOOR CRACKED-OPEN UNEXPECTEDLY WHEN VEHICLE WAS IN MOTION (DOOR WAS CAUGHT BY LATCH, PREVENTING IT FROM SWINGING OPEN FULLY). ISSUE FIRST OCCURRED AT AROUND 4000MI IN EARLY OCTOBER 2016 WHEN TRAVELING ON I278 EASTBOUND AT 50MPH. DRIVER THOUGHT SOMETHING WAS STUCK IN DOORJAMB. ISSUE REOCCURRED AT 4500MI IN MID OCTOBER 2016 ON RT17 SOUTHBOUND WITH 4 PEOPLE IN TOW, TRAVELING AT 65MPH. LOCAL SERVICE CENTER WAS MADE AWARE OF THE TWO OCCURRENCES AT 4573MI ON 22 OCT. 16. DOOR LATCH MECHANISM WAS INSPECTED AND DETERMINED WORKING AS DESIGNED. ISSUE REOCCURRED 500MI AFTER DOOR LATCH MECHANISM WAS LAST INSPECTED ON I278 WESTBOUND, TRAVELING AT 20MPH. ISSUE WAS ADDRESSED AT 5071MI ON 15 NOV. 16. DOOR LATCH ASSEMBLY WAS REPLACED AND NO ISSUE ENCOUNTERED SINCE REPAIR. OBSERVED CONDITIONS AT TIME OF DOOR LATCH FAILURE WERE: HUMID, 60-74F TEMPERATURES, SMOOTH ROADS, NO POTHOLES, VEHICLE WAS TURNING TWICE LEFT AND ONCE RIGHT.
TL* THE CONTACT OWNS A 2016 SUBARU OUTBACK. THE CONTACT STATED THAT ALL FOUR DOORS FAILED TO OPEN AND REQUIRED EXCESSIVE FORCE. THE CONTACT MENTIONED THAT THE ICE WOULD BUILD UP, CAUSING THE FAILURE. THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT REPAIRED. THE FAILURE OCCURRED ON SEVERAL OCCASIONS. THE MANUFACTURER WAS NOTIFIED …
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TL* THE CONTACT OWNS A 2016 SUBARU OUTBACK. THE CONTACT STATED THAT ALL FOUR DOORS FAILED TO OPEN AND REQUIRED EXCESSIVE FORCE. THE CONTACT MENTIONED THAT THE ICE WOULD BUILD UP, CAUSING THE FAILURE. THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT REPAIRED. THE FAILURE OCCURRED ON SEVERAL OCCASIONS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 12,029....UPDATED 03/29/17 *BF ...UPDATED 04/20/17 *BF *CN
FRONT WINDSHIELD CONTINUES TO CRACK CAUSING STRUCTURAL DEFECT IN VEHICLE. RECALL SUBARU 12-192-15R EXTENDED WARRANTY ONE TIME. WINDOW REPLACEMENT HAS CRACKED A TOTAL OF 6 TIMES IN 18,000 MILES. FRONT WINDOW CRACKED 4 TIMES WHILE VEHICLE WAS MOVING WITH NO APPARENT OBJECT BEING HIT. FRONT WINDOW CRACKED 2 TIMES WHILE BEING …
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FRONT WINDSHIELD CONTINUES TO CRACK CAUSING STRUCTURAL DEFECT IN VEHICLE. RECALL SUBARU 12-192-15R EXTENDED WARRANTY ONE TIME. WINDOW REPLACEMENT HAS CRACKED A TOTAL OF 6 TIMES IN 18,000 MILES. FRONT WINDOW CRACKED 4 TIMES WHILE VEHICLE WAS MOVING WITH NO APPARENT OBJECT BEING HIT. FRONT WINDOW CRACKED 2 TIMES WHILE BEING PARKED. REPEATED ISSUES NOTED IN WWW.SUBARUOUTBACK.ORG FOR MODEL YEARS 15, 16, AND 17.
TOOK DELIVERY OF OUR CAR IN THE RAIN - DEALERSHIP DID NOT HAVE IT WAITING IN A SHOWROOM - SO DIDN'T NOTICE SCRATCH ON BOTH SIDES (IT IS BLACK) TIL GOT IT HOME AND CLEANED IT UP. DEALERSHIP ON RECHECK BUFFED OUT THE WHOLE CAR - STILL THERE - DISAPPOINTED - A LOT OF MONEY FOR A VEHICLE TO HAVE SUCH AN ELEMENTARY TROUBLE.
AT 9AM ON APRIL 20, 2016, I WALKED PAST THE FRONT OF MY OUTBACK, PARKED WITH THE IGNITION OFF, IN MY GARAGE. THE REAR TAILGATE SUDDENLY BEEPED AND OPENED FULLY. I HAD NO KEY FOB OPENERS ON MY PERSON NOR WERE ANY OF MY TWO KEY FOBS WITHIN 20 FEET OF THE CAR AT THE TIME. ALL DOORS HAD BEEN IN A CLOSED POSITION, INCLUDING THE TAI…
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AT 9AM ON APRIL 20, 2016, I WALKED PAST THE FRONT OF MY OUTBACK, PARKED WITH THE IGNITION OFF, IN MY GARAGE. THE REAR TAILGATE SUDDENLY BEEPED AND OPENED FULLY. I HAD NO KEY FOB OPENERS ON MY PERSON NOR WERE ANY OF MY TWO KEY FOBS WITHIN 20 FEET OF THE CAR AT THE TIME. ALL DOORS HAD BEEN IN A CLOSED POSITION, INCLUDING THE TAILGATE, BUT THE CAR WAS NOT LOCKED AT THE TIME. THIS IS A SAFETY ISSUE IF IT COULD HAPPEN WHILE THE CAR IS IN MOTION, OR IF IT OPENED WHILE PARKED UNDER A LOW CEILING OR OVERHEAD, OF IF IT SHOULD HAPPEN IN A PUBLIC SPACE WHERE AN INTRUDER WOULD THEN BE TEMPTED TO ENTER THE VEHICLE IN HOPES OF STEALING IT OR TO LIE IN WAIT FOR THE OPERATOR.
Official recalls
419V910000 · Air Bags: Air Bag/restraint Control Module
Dec 19, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2016-2017 Outback vehicles. A replacement air bag control module may have been installed that is not compatible with the passenger air bag module, possibly affecting air bag deployment.
Consequence & remedy
Consequence: In the event of a crash necessitating passenger frontal air bag deployment, the air bag may not deploy properly, increasing the risk of injury.
Remedy: Subaru will notify owners, and dealers will replace the passenger air bag module, free of charge. The recall began February 3, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUX-09.
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.
15V794000 · Power Train:driveline:differential Unit; Power Train:driveline:driveshaft
Nov 24, 2015
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence & remedy
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
Additional source detail variants (2)
Power Train:driveline:differential Unit
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
Power Train:driveline:driveshaft
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
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: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.
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.
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
1EA21002 · 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.