IllustrationBATTERY HAS BEEN REPLACED 4 TIMES. DEALERSHIP REPLACES BATTERY, AND IT'S DEAD WITHIN 3-4 MONTHS. OR THEY RECHARGE, AND AGAIN, DEAD IN A FEW MONTHS.
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 →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
2040–25K
20725–50K
7750–75K
2075–100K
6100–150K
2150K+
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 reportsWHILE TRAVELING THROUGH MICHIGAN'S UPPER PENINSULA AND NORTHERN WISCONSIN DURING SNOW FALL WITH A FULLY PACKED CAR ON THE HIGHWAY I EXPERIENCED THE REAR END "GHOST WALKING" OR "STEERING" OR "PULLING" TO THE LEFT AND TO THE RIGHT. I HAD TO DRIVE 40MPH WHILE TWO-WHEELED DRIVE CAMRYS, CIVICS, VANS, ETC. PASSED US BY. GROWING UP …
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WHILE TRAVELING THROUGH MICHIGAN'S UPPER PENINSULA AND NORTHERN WISCONSIN DURING SNOW FALL WITH A FULLY PACKED CAR ON THE HIGHWAY I EXPERIENCED THE REAR END "GHOST WALKING" OR "STEERING" OR "PULLING" TO THE LEFT AND TO THE RIGHT. I HAD TO DRIVE 40MPH WHILE TWO-WHEELED DRIVE CAMRYS, CIVICS, VANS, ETC. PASSED US BY. GROWING UP IN NORTHERN MICHIGAN, I'M NO STRANGER TO WINTER CONDITIONS AND ALL WHEEL DRIVE VEHICLES. I DON'T THINK ALL-WHEELED DRIVE VEHICLES MAKE ME INVINCIBLE, BUT THEY DO MAKE DRIVING IN WINTERY CONDITIONS BETTER. AFTER OUR TRIP, I TOOK THE CAR INTO THE SUBARU DEALER AND THEY SAID AT 37K MILES, THE SUSPENSION LOOKED GREAT, ALIGNMENT LOOKED GREAT, AND THAT THEY WOULD RECOMMEND NEW TIRES (TIRES ARE AT 4/32 AND HAVE EVEN WEAR AND TEAR). I ASKED TO SPEAK DIRECTLY TO THE TECH WORKING ON MY CAR AND HE SAID THAT THERE WAS NOTHING WRONG WITH THE VEHICLE AND THAT ALTHOUGH THEY WERE RECOMMENDING NEW TIRES, THE CURRENT TIRE CONDITION WOULD NOT CAUSE WHAT I WAS DESCRIBING. MY WIFE AND I THEN RESEARCHED AND CAME ACROSS SEVERAL ONLINE FORUMS WITH OTHER DRIVER'S EXPERIENCING THE SIMILAR ISSUES, BUT WITH PRIOR YEAR MODELS. I CALLED SUBARU'S MAIN CUSTOMER SERVICE LINE TO SEE IF THEY COULD HELP AND THEY SAID THAT THEY WOULD MAKE NOTE OF MY COMPLAINT, BUT THAT IF THE SUBARU DEALER TECH SAID THE VEHICLE WAS FINE OTHER THAN SUGGESTING NEW TIRES, I SHOULD GET NEW TIRES AND THE VEHICLE WOULD BE FINE. SUBARU ALSO SAID THERE WERE NO "CAMPAIGNS" OPEN WITH RESPECT TO THIS PROBLEM AND THAT THEY WERE SORRY I "FELT LIKE I HAD THIS EXPERIENCE" AND THERE WAS NOTHING THEY COULD DO. HERE'S A LINK TO A FORUM, WHERE THE PEOPLE SEEM TO KNOW WHAT IS GOING ON: HTTPS://WWW.SUBARUOUTBACK.ORG/THREADS/2005-2009-GHOSTWALKING-ABNORMAL-WINTER-HANDLING-FIXES.30747/PAGE-2. WE PLAN TO BUY NEW TIRES, BUT ARE WILLING TO OFFER OUR CAR UP FOR TEST DRIVING TO SEE WHAT IS GOING ON.
TL* THE CONTRACT CALLED ON BEHALF OF HIS FATHER WHO OWNS A 2017 SUBARU OUTBACK. THE CONTACT STATED THAT THE BATTERY WAS REPLACED ON SEVERAL OCCASIONS. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO MILLER HILL SUBARU (4710 MILLER TRUNK HWY, DULUTH, MN 55811) WHERE THE FAILURE WAS DIAGNOSED AS A FAULTY BATTERY, REMOTE STARTER, …
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TL* THE CONTRACT CALLED ON BEHALF OF HIS FATHER WHO OWNS A 2017 SUBARU OUTBACK. THE CONTACT STATED THAT THE BATTERY WAS REPLACED ON SEVERAL OCCASIONS. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO MILLER HILL SUBARU (4710 MILLER TRUNK HWY, DULUTH, MN 55811) WHERE THE FAILURE WAS DIAGNOSED AS A FAULTY BATTERY, REMOTE STARTER, SENSOR AND REAR LIFTGATE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND A CASE WAS FILED. THE FAILURE MILEAGE WAS UNKNOWN.
ORIGINAL BATTERY FAILED ABOUT 30 MONTHS AFTER CAR PURCHASED (NEW CAR). THERE WAS NO WARNING-JUST DEAD AFTER PARKED IN GARAGE OVERNIGHT. PURCHASED NEW DURACELL BATTERY FROM SAMS CLUB ON 1-24-20. REPLACEMENT BATTERY WAS DEAD AFTER PARKED OVERNIGHT IN GARAGE ON 12-24-20. BATTERY FAILED IN 11 MONTHS. NO PREVIOUS WARNING, WEATHER …
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ORIGINAL BATTERY FAILED ABOUT 30 MONTHS AFTER CAR PURCHASED (NEW CAR). THERE WAS NO WARNING-JUST DEAD AFTER PARKED IN GARAGE OVERNIGHT. PURCHASED NEW DURACELL BATTERY FROM SAMS CLUB ON 1-24-20. REPLACEMENT BATTERY WAS DEAD AFTER PARKED OVERNIGHT IN GARAGE ON 12-24-20. BATTERY FAILED IN 11 MONTHS. NO PREVIOUS WARNING, WEATHER WAS NORMAL BOTH INSTANCIES.
I'M ON MY 4TH BATTERY IN 3 YEARS. BATTERY HAS GONE DEAD MULTIPLE TIMES, LEAVING ME STRANDED IN DIFFICULT AND POTENTIALLY DANGEROUS SITUATIONS. CANNOT OPEN LIFT GATE TO ACCESS THE CARGO AREA WHERE I KEEP MY ROAD SAFETY REFLECTORS, FLASHLIGHT, TIRE PUMP, ETC. STRANDED IN DARK PARKING LOT 1 TIME. AS A RESULT OF THE RELIABILIT…
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I'M ON MY 4TH BATTERY IN 3 YEARS. BATTERY HAS GONE DEAD MULTIPLE TIMES, LEAVING ME STRANDED IN DIFFICULT AND POTENTIALLY DANGEROUS SITUATIONS. CANNOT OPEN LIFT GATE TO ACCESS THE CARGO AREA WHERE I KEEP MY ROAD SAFETY REFLECTORS, FLASHLIGHT, TIRE PUMP, ETC. STRANDED IN DARK PARKING LOT 1 TIME. AS A RESULT OF THE RELIABILITY CONCERNS I HAVE HAD TO BUY A PORTABLE CHARGING UNIT TO HAVE IN THE CAR AT ALL TIMES. I HAVE ALSO HAD TO PURCHASE A NEW BATTERY FOR A CAR THAT ONLY HAS 27K MILES ON IT. THERE ARE INSTANCES OF MANY SIMILAR PROBLEMS RESULTING IN A CLASS ACTION LAWSUIT AGAINST SUBARU. THIS NOT ONLY IMPACTS THE RELIABILITY AND SAFETY, IT ALSO IMPACTS THE RESALE VALUE.
MULTIPLE TIMES THE TAILGATE HAS SPONTANEOUSLY OPENED WHEN WE WERE NOT IN THE VEHICLE. ASIDE FROM ISSUES LIKE RUNNING THE BATTERY DOWN, INCLEMENT WEATHER DAMAGING THE INTERIOR AND THE THEFT OF CONTENTS OF THE CAR ARE ISSUES. THUS FAR, THE CAR HAS NOT BEEN IN MOTION WHEN IT HAPPENED, BUT THERE WAS A LEAST ONE INCIDENT REPORTED WHE…
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MULTIPLE TIMES THE TAILGATE HAS SPONTANEOUSLY OPENED WHEN WE WERE NOT IN THE VEHICLE. ASIDE FROM ISSUES LIKE RUNNING THE BATTERY DOWN, INCLEMENT WEATHER DAMAGING THE INTERIOR AND THE THEFT OF CONTENTS OF THE CAR ARE ISSUES. THUS FAR, THE CAR HAS NOT BEEN IN MOTION WHEN IT HAPPENED, BUT THERE WAS A LEAST ONE INCIDENT REPORTED WHERE A VEHICLE WAS IN MOTION WHEN THIS HAPPENED (SEE ATTACHED COMPLAINTS OF OTHER OWNERS.)THIS IS NOT A CASE OF ACCIDENTALLY ACTIVATING THE KEY FOB - IT HAS HAPPENED WHEN THE CAR WAS TURNED OFF AND SOMEONE WAS SITTING IN THE PASSENGER SEAT. THE ONLY KEY WAS IN A PURSE IN THE BACK SEAT. THE PASSENGER WITNESSED THE CAR TAILGATE JUST SPONTANEOUSLY OPENING. IT HAS HAPPENED WHEN WE RETURNED TO THE CAR AFTER BEING AT AN APPOINTMENT, WHILE STAYING AT A MOTEL, AND WHEN THE CAR WAS PACKED FOR A TRIP THE NIGHT BEFORE. WE ARE VERY CONCERNED THIS COULD HAPPEN WHEN THE CAR IS IN MOTION, CREATING A DEADLY HAZARD FOR OTHER VEHICLES. WE HAVE FOUND THIS PROBLEM REPORTED BY NUMEROUS OWNERS OF THIS MODEL. THE LOCAL DEALER INITIALLY DISMISSED THE PROBLEM AS A CASE OF ACCIDENTALLY PRESSING THE KEY. WE DISPUTED THIS AND THEY KEPT THE CAR FOR TWO DAYS TO SEE IF IT WOULD HAPPEN AND IT DID NOT. SOMETIMES IT IS TWO MONTHS BETWEEN INCIDENTS. THIS IS A SERIOUS PROBLEM AND SAFETY HAZARD THAT SUBARU NEEDS TO ACKNOWLEDGE AND CORRECT, PERHAPS NECESSITATING A RECALL. THERE DOES NOT SEEM TO BE ANY CONVERSATION AMONG SERVICE DEPARTMENTS THAT HAVE RECEIVED SIMILAR COMPLAINTS. IT'S JUST A SINGLE ISOLATED CASE AS FAR AS OUR LOCAL DEALER IS CONCERNED. I AM SUBMITTING A DOCUMENT THAT SHOWS MULTIPLE COMPLAINTS (AND NOT ALL) THAT OTHER SUBARU OWNERS HAVE BEEN REPORTING FOR YEARS.
WINDSHIELD CRACKED FOR NO UNDERLYING REASON. NO OBJECTS HIT IT; NOR EXTREME TEMPS.
WINDSHIELD CRACKED WHILE DRIVING ON INTERSTATE WITH NO VEHICLE NEAR ME AT THE TIME, TALKED TO DEALER I BOUGHT IT FROM NEW, THEY SAID NO RECALLS FOR BAD WINDSHIELD SO I WAS ON MY OWN TO REPLACE.
BATTERY INTERMITTANTLY DISCHARGES NESSITATING RECHARGING. I REPLACED IT WITH A NEW ONE THINKING PERHAPS THE OEM (2YRS OLD) WAS FAULTY. THEN I READ THAT THIS IS A KNOWN PROBLEM WITH THIS YEAR/MODEL SUBARU.
HAD TO REPLACE WINDSHIELD IN MY WIFE'S 2017 OUTBACK 2 TIMES. BOTH TIMES THE SAME SITUATION: SMALL PEBBLE CHIPS WINDOW AND A LONG AND EVENTUALLY GROWING CRACK EXTENDS ACROSS WINDOW.
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.
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
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.