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2017 Subaru Outback

Owner reports · Recalls · Investigations

More warning signs than most Outback years

Owner complaints for the 2017 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

516 reports with mileage · 401 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 391 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Visibility/wiper. Review the 205 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. 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.

32 crash reports3 fire reports17 injury reports

What owners actually said

917 reports
48,800 miles · Nov 27, 2020
Visibility/wiper

WINDSHIELD CRACKED. IT'S UNKNOWN WHETHER IT WAS DUE TO ROAD TRAFFIC AS WE DIDN'T NOTICE IT RIGTHT AWAY. THE ORIGINAL CRACK STARTED BELOW THE DASHBOARD EYESITE.

NHTSA ODI #11376663

1,200 miles · Nov 27, 2020
Visibility/wiper

WINDSHIELD CRACKS AND PITS VERY EASY AND LOOKS LIKE IT WILL CRACK WITHOUT MUCH FORCE

NHTSA ODI #11376545

5,000 miles · Nov 27, 2020
Unknown Or Other

WINDSHIELD CRACKED FROM UNKNOWN ORIGIN IN FIRST YEAR OF OWNERSHIP. I HAD A $500 COMPREHENSIVE DEDUCTIBLE AND HAD TO PAY THAT IN FULL TO GET A NEW WINDSHIELD.

NHTSA ODI #11376544

66,500 miles · Nov 27, 2020
Visibility

TL* THE CONTACT OWNS A 2017 SUBARU OUTBACK. THE CONTACT STATED THAT WHILE DRIVING ON THE HIGHWAY, HE HEARD A SMALL POPPING SOUND. THE CONTACT STATED THAT THERE WAS AN HORIZONTAL CRACK ON THE DRIVER'S SIDE WINDSHIELD. THE CONTACT STATED THAT OVER SEVERAL HOURS, THE CRACK EXPANDED ACROSS THE WINDSHIELD TOWARD THE PASSENGER'S SIDE.…

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TL* THE CONTACT OWNS A 2017 SUBARU OUTBACK. THE CONTACT STATED THAT WHILE DRIVING ON THE HIGHWAY, HE HEARD A SMALL POPPING SOUND. THE CONTACT STATED THAT THERE WAS AN HORIZONTAL CRACK ON THE DRIVER'S SIDE WINDSHIELD. THE CONTACT STATED THAT OVER SEVERAL HOURS, THE CRACK EXPANDED ACROSS THE WINDSHIELD TOWARD THE PASSENGER'S SIDE. THE VEHICLE WAS TAKEN TO SAFELIGHT AUTO-GLASS REPAIR AND THE WINDSHIELD WAS REPAIRED. NEITHER THE DEALER NOR THE MANUFACTURER WERE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 66,500.

NHTSA ODI #11376530

27,613 miles · Nov 26, 2020
Electrical System

CAR BATTERY WILL NOT HOLD A CHARGE. I HAD TO REPLACE THE ORIGINAL BATTERY TWICE NOW. ORIGINAL BATTERY DIED MARCH, 2019 ' I HAD MY MECHANIC REPLACE THAT WITH A NEW BATTERY (BATTERY REPLACEMENT 1). BATTERY REPLACEMENT 1 DIED FEBRUARY, 2020; BATTERY REPLACEMENT 2 (ANOTHER NEW BATTERY) WAS INSTALLED. BATTERY REPLACEMENT 2 DIED NOVEM…

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CAR BATTERY WILL NOT HOLD A CHARGE. I HAD TO REPLACE THE ORIGINAL BATTERY TWICE NOW. ORIGINAL BATTERY DIED MARCH, 2019 ' I HAD MY MECHANIC REPLACE THAT WITH A NEW BATTERY (BATTERY REPLACEMENT 1). BATTERY REPLACEMENT 1 DIED FEBRUARY, 2020; BATTERY REPLACEMENT 2 (ANOTHER NEW BATTERY) WAS INSTALLED. BATTERY REPLACEMENT 2 DIED NOVEMBER, 2020; BATTERY REPLACEMENT 3 (ANOTHER NEW BATTERY) WAS INSTALLED BY SUBARU.

NHTSA ODI #11376451

34,000 miles · Nov 24, 2020
Electrical System

I PURCHASED MY USED SUBARU OUTBACK FROM CARMAX. IT HAS BEEN WORKING FINE FOR A PERIOD OF TIME. HOWEVER, NOW I FIND MY CAR CONSTANTLY DEAD AND HAVE HAD TO PURCHASE A CHARGER AND LEAVE ON MY CAR EVERY OTHER DAY OR I FIND MY VEHICLE IS COMPLETELY DEAD AND THE BATTERY IS DRAINED. IT HAPPENS IF I DO NOT DRIVE ME VEHICLE FOR 48 HOURS.…

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I PURCHASED MY USED SUBARU OUTBACK FROM CARMAX. IT HAS BEEN WORKING FINE FOR A PERIOD OF TIME. HOWEVER, NOW I FIND MY CAR CONSTANTLY DEAD AND HAVE HAD TO PURCHASE A CHARGER AND LEAVE ON MY CAR EVERY OTHER DAY OR I FIND MY VEHICLE IS COMPLETELY DEAD AND THE BATTERY IS DRAINED. IT HAPPENS IF I DO NOT DRIVE ME VEHICLE FOR 48 HOURS. I ALSO HAVE AN INTERLOCK DEVICE ON MY VEHICLE (PUT ON AFTER THE BATTERY ISSUE BEGAN) AND HAD MY BATTERY CHECKED AT AN AUTO PARTS STORE WHO SAID IT WAS FINE. WHEN I PURCHASED MY CAR FROM CARMAX THE VEHICLE WAS DEAD IN THE LOT SO I WAS NOT ABLE TO TEST DRIVE IT. CARMAX REPLACED THE BATTERY TO ENSURE IT WASN'T A BATTERY ISSUE. THIS WAS LIKELY A TEMPORARY FIX WHICH IS WHY THE ISSUE DIDN'T OCCUR IMMEDIATELY. I TOOK THE CAR INTO CARMAX AND THEY CHECKED THE BATTERY AND FOUND IT TO BE WORKING FINE. I REPLACED THE BATTERY CLIP ON THE NEGATIVE TERMINAL, WHICH THEY SAID WAS A LITTLE BIT LOOSE AND I PAID FOR THE REPAIR. THE ISSUE IS STILL PERSISTING. SINCE I HAVE FOUND THERE IS A CLASS ACTION LAWSUIT AGAINST SUBARU FOR THIS ISSUE. CARMAX SAYS I NEED TO GET SUBARU TO FIX IT, IF THERE IS AN ISSUE. WHEN IT DIES I USUALLY HAVE TO GO TO THE INTERLOCK MECHANIC AND HE HAS TO RESET IT. THIS IS CAUSING SIGNIFICANT ISSUES WITH ME GETTING TO WORK AND PLANNING AN UPCOMING MOVE I AM MAKING IN THE NEXT MONTH. THE INTERLOCK DEVICE CAN READ WHENEVER I TURN THE CAR ON AND HOW MANY TIMES IT HAS DIED AND I CAN GET THIS DOCUMENTATION IF NEEDED LATER AS WELL.

NHTSA ODI #11376094

22,000 miles · Nov 22, 2020
Forward Collision AvoidanceVisibility/wiper

WINDSHIELD CRACKED

NHTSA ODI #11375788

46,480 miles · Nov 16, 2020
Vehicle Speed Control

I WAS IN MOTION AND APPROACHING A RED LIGHT, AND AS I BEGAN TO LIGHTLY APPLY MY BRAKES TO SLOW DOWN, MY VEHICLE TRIED TO ACCELERATE (THERE WAS ALSO A CORRESPONDING REV IN THE ENGINE). FORTUNATELY, I WAS ABLE TO PRESS ON THE BRAKE PEDAL EXTRA HARD TO BRING IT TO A COMPLETE STOP.

NHTSA ODI #11374964

73,000 miles · Nov 14, 2020
Structure

WE WERE TRAVELING SOUTH ON INTERSTATE 15 AND ABOUT 45 MINUTES INTO MY TRIP TO TAKE MY COUSINS BACK TO THE AIRPORT IN SALT LAKE CITY FROM IDAHO FALLS THE HOOD OF THE CAR JUST FLEW UP AND SMASHED INTO THE WINDSHIELD. THE CARE WAS UN-DRIVABLE AND HAD TO BE TOWED. ULTIMATELY THE INSURANCE COMPANY TOTALED THE VEHICLE. THE WEEKEND …

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WE WERE TRAVELING SOUTH ON INTERSTATE 15 AND ABOUT 45 MINUTES INTO MY TRIP TO TAKE MY COUSINS BACK TO THE AIRPORT IN SALT LAKE CITY FROM IDAHO FALLS THE HOOD OF THE CAR JUST FLEW UP AND SMASHED INTO THE WINDSHIELD. THE CARE WAS UN-DRIVABLE AND HAD TO BE TOWED. ULTIMATELY THE INSURANCE COMPANY TOTALED THE VEHICLE. THE WEEKEND AFTER I WAS BACK IN COLORADO MY BROTHER AND I SAW ANOTHER SUBARU BUT DIFFERENT MODEL THAT IT LOOKED LIKE THE SAME THING HAPPENED. HAVE PICTURES OF THAT AS WELL.

NHTSA ODI #11374680

75,000 miles · Nov 12, 2020
Electrical System

OUR 2017 OUTBACK HAS PROBLEMS WITH THE BATTERY DISCHARGING. THE CAR WOULDN'T START IN FEBRUARY 2020. SINCE WE HAD A LONG TRIP PLANNED, WE REPLACED THE BATTERY. THAT SEEMED TO WORK FOR A WHILE, BUT THE CAR SEEMED TO STRUGGLE WITH STARTING SOME MORNINGS. I NOTED THAT THE BATTERY WAS ONLY AT 11.5 VOLTS AFTER SITTING OVERNIGHT. …

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OUR 2017 OUTBACK HAS PROBLEMS WITH THE BATTERY DISCHARGING. THE CAR WOULDN'T START IN FEBRUARY 2020. SINCE WE HAD A LONG TRIP PLANNED, WE REPLACED THE BATTERY. THAT SEEMED TO WORK FOR A WHILE, BUT THE CAR SEEMED TO STRUGGLE WITH STARTING SOME MORNINGS. I NOTED THAT THE BATTERY WAS ONLY AT 11.5 VOLTS AFTER SITTING OVERNIGHT. WE TOOK IT TO THE DEALER AND THEY PERFORMED $130 "PARASITIC BATTERY DRAIN TEST", BUT IT DIDN'T SHOW ANY PROBLEMS. I INVESTIGATED THE PROBLEM ON THE INTERNET AND DISCOVERED THAT THERE IS A RECALL TO REPROGRAM THE CAR TO SOLVE THE PROBLEM. THE DEALER WASN'T AWARE OF IT AND THANKED US FOR BRINGING IT TO HIS ATTENTION (AND TO BE "GENEROUS" HE WASN'T GOING TO CHARGE US FOR THE RECALL!). WE THOUGHT THAT THE PROBLEM MIGHT BE SOLVED. IF WE DON'T DRIVE THE VEHICLE FOR 3 OR 4 DAYS, THE BATTERY IS DEAD, UNDER 11 VOLTS. SO, IT IS A RITUAL FOR US TO HAVE TO CHARGE THE BATTERY IF IT HASN'T BEEN DRIVEN IN A COUPLE OF DAYS. WE ALSO CARRY A SPARE 12V BATTERY IN THE VEHICLE ALONG WITH JUMPER CABLES. EVEN AFTER THE VEHICLE HAS BEEN PARKED FOR SEVERAL HOURS, THERE IS RANDOMLY A "FAN NOISE" NEAR THE REAR AXLE. I BELIEVE THAT THIS IS THE "PARASITIC DRAIN" IN ACTION. THERE ARE LAWSUITS FILED OVER SIMILAR COMPLAINTS. I DO HAVE A CELL PHONE VIDEO THAT HAS THE SOUND DOCUMENTED, BUT IT LOOKS LIKE I CAN'T UPLOAD IT. IT CONTINUES TO BE A PROBLEM.

NHTSA ODI #11374353

Official recalls

4

19V910000 · 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.

16V716000 · Air Bags:knee Bolster; Steering:column

Oct 6, 2016

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Legacy and Outback vehicles manufactured September 21, 2016, to September 23, 2016. In the affected vehicles, the knee guard bracket may not be properly attached to the steering beam assembly.

Consequence & remedy

Consequence: If the knee guard is not properly attached and the driver is not wearing a seatbelt, the knee guard may not be able to properly restrain the driver's lower body in the event of a crash, increasing the risk of injury.

Remedy: Subaru will notify owners, and dealers will inspect the knee guard welding on each vehicle's steering beam, replacing the beam as necessary, free of charge. The recall began November 14, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTL-72.

Additional source detail variants (2)

Air Bags:knee Bolster

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Legacy and Outback vehicles manufactured September 21, 2016, to September 23, 2016. In the affected vehicles, the knee guard bracket may not be properly attached to the steering beam assembly.

Consequence: If the knee guard is not properly attached and the driver is not wearing a seatbelt, the knee guard may not be able to properly restrain the driver's lower body in the event of a crash, increasing the risk of injury.

Remedy: Subaru will notify owners, and dealers will inspect the knee guard welding on each vehicle's steering beam, replacing the beam as necessary, free of charge. The recall began November 14, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTL-72.

Steering:column

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Legacy and Outback vehicles manufactured September 21, 2016, to September 23, 2016. In the affected vehicles, the knee guard bracket may not be properly attached to the steering beam assembly.

Consequence: If the knee guard is not properly attached and the driver is not wearing a seatbelt, the knee guard may not be able to properly restrain the driver's lower body in the event of a crash, increasing the risk of injury.

Remedy: Subaru will notify owners, and dealers will inspect the knee guard welding on each vehicle's steering beam, replacing the beam as necessary, free of charge. The recall began November 14, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTL-72.

16V576000 · Service Brakes, Hydraulic:foundation Components:disc:caliper; Suspension

Aug 3, 2016

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Outback vehicles manufactured June 20, 2016, to June 23, 2016. The affected vehicles may have improperly tightened attaching bolts for the front left and right brake calipers, wheel hubs, and the right stabilizer clamp.

Consequence & remedy

Consequence: If any of the front brake caliper, wheel hub or stabilizer clamp attaching bolts loosen or detach, the related components would also become loose and may detach possibly making the vehicle unstable and reducing the braking capability. These conditions would increase the risk of a crash.

Remedy: Subaru has notified owners, and dealers will inspect the bolts for proper torque, and replace any loose bolts, free of charge. The recall began on August 8, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTE-66.

Additional source detail variants (2)

Service Brakes, Hydraulic:foundation Components:disc:caliper

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Outback vehicles manufactured June 20, 2016, to June 23, 2016. The affected vehicles may have improperly tightened attaching bolts for the front left and right brake calipers, wheel hubs, and the right stabilizer clamp.

Consequence: If any of the front brake caliper, wheel hub or stabilizer clamp attaching bolts loosen or detach, the related components would also become loose and may detach possibly making the vehicle unstable and reducing the braking capability. These conditions would increase the risk of a crash.

Remedy: Subaru has notified owners, and dealers will inspect the bolts for proper torque, and replace any loose bolts, free of charge. The recall began on August 8, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTE-66.

Suspension

Subaru of America, Inc. (Subaru) is recalling certain model year 2017 Outback vehicles manufactured June 20, 2016, to June 23, 2016. The affected vehicles may have improperly tightened attaching bolts for the front left and right brake calipers, wheel hubs, and the right stabilizer clamp.

Consequence: If any of the front brake caliper, wheel hub or stabilizer clamp attaching bolts loosen or detach, the related components would also become loose and may detach possibly making the vehicle unstable and reducing the braking capability. These conditions would increase the risk of a crash.

Remedy: Subaru has notified owners, and dealers will inspect the bolts for proper torque, and replace any loose bolts, free of charge. The recall began on August 8, 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTE-66.

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.

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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