MY WINDSHIELD WAS STRUCK WITH DEBRIS WHILE TRAVELING DOWN A 35MPH ROAD. THE CHIP IMMEDIATELY BEGAN TO CRACK IN TWO DIRECTIONS. I HAVE A EXTENDED WARRANTY FROM SUBARU THAT IS FOR WINDSHIELD PROTECTION, WHICH MY DEALER SAID WILL NOT COVER.
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
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.
Visibility/wiper complaints
205 reportsWINDSHIELD SPONTANEOUSLY CRACKED WHILE DRIVING IN RAINY CONDITIONS WITH THE DEFROSTER ON. I HEARD A LARGE POP. I WAS DRIVING ON THE FREEWAY, I WASN'T BEHIND ANY TRAFFIC. THE CRACKED STARTED AT THE SIDE OF THE WINDSHIELD. ON MY WAY HOME LATER THAT DAY WITH THE WINDSHIELD THE CRACK GREW AN ADDITIONAL 6 INCHES. I ORIGINALLY T…
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WINDSHIELD SPONTANEOUSLY CRACKED WHILE DRIVING IN RAINY CONDITIONS WITH THE DEFROSTER ON. I HEARD A LARGE POP. I WAS DRIVING ON THE FREEWAY, I WASN'T BEHIND ANY TRAFFIC. THE CRACKED STARTED AT THE SIDE OF THE WINDSHIELD. ON MY WAY HOME LATER THAT DAY WITH THE WINDSHIELD THE CRACK GREW AN ADDITIONAL 6 INCHES. I ORIGINALLY THOUGHT THIS WAS JUST A FREAK ACCIDENT BUT THEN I SEEN SOMEONE ELSE'S POST ON NEWER MODEL SUBARU WINDSHIELDS AND THERE ARE HUNDREDS MORE INCIDENTS EXACTLY LIKE THIS ONE. I KNOW THERE WAS A LAWSUIT IN 2017 ON THE 2015-2016 MODEL WINDSHIELDS, BUT I READ ENOUGH TO BELIEVE THIS PROBLEM STILL EXISTS IN THE 2017 TO PRESENT MODELS. THIS ISN'T SAFE. TORQUE NEWS THERE IS AN ARTICLE DATED MAY 5, 2018, "SUBARU LOSES LAWSUIT OVER FAULTY OUTBACK WINDSHIELDS" DISCUSSING THE LAWSUIT, THE COMMENTS FROM THE FELLOW SUBARU OWNERS IS CONCERNING.
I HIT A LARGE DEER ON IH 10 AT 75 MPH. ALL AIRBAGS DEPLOYED SAFELY BUT CONPLETELY BLOCKED MY VISION AND PREVENTED ME FROM EXITING THE VEHICLE AS THE BAGS BLOCKED DOOR HANDLES, WINDOW CONTROL SWITCHES AND MY SEAT BELT RELEASE. ANOTHER MOTORIST CUT AIR BAG STRIPS AND HELPED ME TO EXIT THE CAR. FORTUNATELY, NO FIRE.
WE PUT CAR IN GARAGE. IT WAS CLEAN PERFECT CONDITION. THE GARAGE IS LOCKED AND I FOUND A SPIDER SCRATCH WHICH HAD NO VISIBLE HOLE FROM A PEBBLE. THE SPIDER CRACK WAS INTERNAL SO I COULD FEEL NO INDENTATION. I HAVE WITNESSES IN THE VEHICLE. IT IS VERY CLEAR THAT IT WAS INHERENT IN THE WINDOW. TO AVOID POSSIBLE DANGER I BROUGHT IT…
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WE PUT CAR IN GARAGE. IT WAS CLEAN PERFECT CONDITION. THE GARAGE IS LOCKED AND I FOUND A SPIDER SCRATCH WHICH HAD NO VISIBLE HOLE FROM A PEBBLE. THE SPIDER CRACK WAS INTERNAL SO I COULD FEEL NO INDENTATION. I HAVE WITNESSES IN THE VEHICLE. IT IS VERY CLEAR THAT IT WAS INHERENT IN THE WINDOW. TO AVOID POSSIBLE DANGER I BROUGHT IT TO DEALERSHIP. I STILL PAID $100 FOR REPAIR AND I BOUGHT IT NEW. ALSO I HAD SCRATCH PROTECTION.
I HAD THE ORIGINAL WINDSHIELD IN MY 2017 OUTBACK CRACK WHILE DRIVING ON I-65 BACK IN MARCH OF 2018, WHICH I PRESUMED WAS DUE TO A STONE CHIP EVEN THOUGH THE CHIP DAMAGE I OBSERVED WAS EXTREMELY MINOR. NOT KNOWING ABOUT THE ONGOING WINDSHIELD CRACKING ISSUES THAT SUBARU WAS UNDERGOING WITH THEIR 2015-2016 MODELS, I HAD THE CRACKE…
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I HAD THE ORIGINAL WINDSHIELD IN MY 2017 OUTBACK CRACK WHILE DRIVING ON I-65 BACK IN MARCH OF 2018, WHICH I PRESUMED WAS DUE TO A STONE CHIP EVEN THOUGH THE CHIP DAMAGE I OBSERVED WAS EXTREMELY MINOR. NOT KNOWING ABOUT THE ONGOING WINDSHIELD CRACKING ISSUES THAT SUBARU WAS UNDERGOING WITH THEIR 2015-2016 MODELS, I HAD THE CRACKED WINDSHIELD REPLACED AT MY DEALER WITH OEM PARTS ORDERED THROUGH MY DEALER'S PARTS DEPT. WHICH ENDED UP COSTING ME $500 OUT OF POCKET ON A $788 INSURANCE CLAIM. NOW I HAVE THE SAME KIND OF CRACK APPEARING IN THE REPLACEMENT WINDOW WITH NO APPARENT STONE CHIP OR OTHER CAUSE. I FIRST NOTICED THE CRACK ORIGINATE FROM THE AREA OF THE VIN WINDOW IN THE BOTTOM DRIVER'S SIDE OF THE WINDOW. THIS HAPPENED SOON AFTER I BEGAN DRIVING ON A QUITE COLD DAY WITH THE WINDSHIELD DEFOGGER ENGAGED. SINCE IT HAPPENED LESS THAN 1 YEAR AFTER THE FIRST, I ASKED THE SERVICE REP AT MY LOCAL DEALERSHIP IF THE REPLACEMENT WINDOW WAS COVERED BY ANY MANUFACTURER'S WARRANTY AND HE SAID NO, NOT FOR CRACKING. AFTER SEARCHING THE WINDSHIELD CRACKING PROBLEM ONLINE, I WAS SHOCKED TO READ OF THE NUMBER OF OTHER SUBARU LEGACY/OUTBACK OWNERS OF SIMILAR MODEL YEARS AND LATER WITH IDENTICAL STORIES AND WITH SUBARU APPARENTLY DUCKING THE ISSUE BY CONTENDING THAT THEY ARE NOT RESPONSIBLE FOR WARRANTYING REPLACEMENT WINDOWS. NEEDLESS TO SAY I'M NOT HAPPY TO READ OF THEIR DODGING THIS POTENTIALLY SERIOUS SAFETY ISSUE. I GUESS IT WILL TAKE ANOTHER CLASS ACTION LAWSUIT TO GET SUBARU TO STEP UP.
DRIVING ON I 29 WITH NO CARS AROUND US. HEARD A POP SOUND AND A CRACK APPEARED IN MY WINDSHIELD. NOTHING HIT IT. IT JUST CRACKED SPONTANEOUSLY.
THE WINDSHIELD IS EXTREMELY FRAGILE AND CRACKS EASILY. I FEEL IT IS A LIGHTER WINDSHIELD, PERHAPS TO HELP WITH GAS MILEAGE. ONE LITTLE ROCK CRACKED IT EASILY. PREVIOUSLY, OWNED VEHICLES OF OLDER VINTAGE AND MODELS NEVER SEEMED TO CRACK AS READILY. ON HIGHWAY TRAVELING 60 SMALL STONE HIT WINDSHIELD.
SUBARU OUTBACK 2017 WHILE IN MOTION ON HIGHWAY, HEARD A CRACKING SOUND AND WITH NO APPARENT IMPACT ON GLASS, WINDSHIELD HAS NOW AN ABOUT FOUR INCH CRACK NEAR THE BOTTOM CORNER EDGE OF THE DRIVER SIDE. AFTER A FEW DAYS TIME HAS DEVELOPED INTO A LENGTH APPROXIMATELY ONE THIRD OF THE WHOLE WINDSHIELD.
WITHIN 6 MONTHS OF PURCHASE THE WINDSHIELD CRACKED SPONTANEOUSLY. CAR WAS PARKED IN THE EMPLOYEE PARKING LOT. WINDSHIELD WAS FINE WHEN I LEFT THE CAR. WHEN I CAME OUT AFTER WORK THERE WAS A LARGE CRACK ACROSS MY WINDSHIELD. STARTED IN THE TOP CORNER EDGE OF THE DRIVERS SIDE AND EXTENDED ACROSS TO MIDDLE OF THE WINDSHIELD BY …
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WITHIN 6 MONTHS OF PURCHASE THE WINDSHIELD CRACKED SPONTANEOUSLY. CAR WAS PARKED IN THE EMPLOYEE PARKING LOT. WINDSHIELD WAS FINE WHEN I LEFT THE CAR. WHEN I CAME OUT AFTER WORK THERE WAS A LARGE CRACK ACROSS MY WINDSHIELD. STARTED IN THE TOP CORNER EDGE OF THE DRIVERS SIDE AND EXTENDED ACROSS TO MIDDLE OF THE WINDSHIELD BY THE EYESIGHT CAMERA. NO IMPACT POINT.
MY WINDSHIELD SPONTANEOUSLY CRACKED. CAR WAS PARKED. I WENT IN A RESTAURANT FOR LUNCH, WITH CAR IN VIEW. CAME OUT WINDSHIELD HAD CRACKED FROM VERY TOP, THROUGH EYESIGHT CAMERA, DOWN THROUGH MIDDLE OF WINDSHIELD IN A WIDE J. TEMP WAS IN MID 80S. TOOK IT TO DEALERSHIP THEY SAID IT WAS DUE TO IMPACT. THERE IS NO IMPACT MARK AT…
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MY WINDSHIELD SPONTANEOUSLY CRACKED. CAR WAS PARKED. I WENT IN A RESTAURANT FOR LUNCH, WITH CAR IN VIEW. CAME OUT WINDSHIELD HAD CRACKED FROM VERY TOP, THROUGH EYESIGHT CAMERA, DOWN THROUGH MIDDLE OF WINDSHIELD IN A WIDE J. TEMP WAS IN MID 80S. TOOK IT TO DEALERSHIP THEY SAID IT WAS DUE TO IMPACT. THERE IS NO IMPACT MARK AT ALL. BRAND NEW CAR. HAD IT LESS THAN A YEAR. HAD 2 CHIPS PRIOR TO THIS, NOT CONNECTED TO LARGE CRACK. BEEN IN OUTSIDE SALES 9 YEARS WITH 2 OTHER CARS. NEVER HAD WINDSHIELD PROBLEMS LIKE THIS.
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.
Illustration