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2013 Acura Ilx

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2013 Acura Ilx do not stand out strongly from the model-year median of 21.5.

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How this year compares

Owner complaints by model year

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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

29 reports with mileage · 37 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.

  • Air Bags. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

7 crash reports0 fire reports3 injury reports

What owners actually said

66 reports
Mileage unknown · Aug 28, 2024
Power Train

Power train issue the vehicle loses power while driving on the roads and highway. (i have a 1-year-old daughter) It has not been confirmed by a dealer/professional when i bought it in they can't diagnose without warning lights. the warning light were not on when I first brought it in a couple year ago, but the car still loses p…

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Power train issue the vehicle loses power while driving on the roads and highway. (i have a 1-year-old daughter) It has not been confirmed by a dealer/professional when i bought it in they can't diagnose without warning lights. the warning light were not on when I first brought it in a couple year ago, but the car still loses power frequently and now all the brakes system lights are on.

NHTSA ODI #11611367

Mileage unknown · Jun 14, 2024
Electrical SystemSteering

Over the past few weeks the vehicle warning lamp states "Check Power Steering System." A customer service representative from Acura Dealer witnessed the problem. Then somehow it corrects itself for a while and steering is back to normal. My most recent diagnostic by an independent service center did not indicate a problem. Howev…

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Over the past few weeks the vehicle warning lamp states "Check Power Steering System." A customer service representative from Acura Dealer witnessed the problem. Then somehow it corrects itself for a while and steering is back to normal. My most recent diagnostic by an independent service center did not indicate a problem. However, 2 days later the problem reoccurred which caused the wheel to shake and stiffen while driving. The most difficulty experience is turning the wheel to park.

NHTSA ODI #11594476

Mileage unknown · Jun 1, 2024
Electrical SystemEngineSteering

Issue had not been persistent, on Sunday, May the 12th, 2024, while driving home, I was on a slight downward slope coming to a halt at a red light, when the car jolted slightly and the warning lights came. The auto-shutoff feature on the vehicle stopped working immediately. I was able to drive the car home, but after parking - t…

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Issue had not been persistent, on Sunday, May the 12th, 2024, while driving home, I was on a slight downward slope coming to a halt at a red light, when the car jolted slightly and the warning lights came. The auto-shutoff feature on the vehicle stopped working immediately. I was able to drive the car home, but after parking - the vehicle wouldn’t start again. Electronic screen on the radio came on and I could see error codes P1437 & P15A5. Also warnings on the dash to check IMA system, check charging system, check battery, check breaking system. Power steering locked up due to the voltage shortage. What is the reason/explanation provided by the dealer, as to what caused this issue? DTC'S P0A78 - MPI INTERNAL CIRCUIT MALFUNCTION, P1440 - MPI OUT CIRCUIT MALFUNCTION. MPI FAILING INTERNALLY, CAUSING 12V BATTERY TO LOSE CHARGE. Previously parts involved were recalled in Dec 2020, since American Honda didn’t not include my VIN they have refused to be of any assistance - monopolizing on being the only available source to change the parts. Had I received the recall, I would have had it addressed prior to the part going out. I’m 6330 miles over what they would have covered because I had no idea this was an issue until I found the safety bulletin which exactly described the recall and what happened to be my experience. Same issues, but I’m being told I couldn’t be included. They are charging me over $1400 for the part alone and then service which includes a complete removal of my back seats. I JUST spent nearly $4000 in Feb 2023 on the AC because the car wouldn’t start, who is to say this wasn’t undetected issue at the time?!

NHTSA ODI #11591884

Mileage unknown · Dec 28, 2023
Engine

engine failure

NHTSA ODI #11562398

Mileage unknown · Oct 24, 2023
Electrical SystemUnknown Or Other

Hi - My driver's side door keeps unlocking and registering as if I am opening it as I am driving. I've attempted to have this fixed (stopped unlocking for about a year) but it has started back up within the last month. It's now come to my attention that upon searching for safety recalls on my car, that there was a recall back in…

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Hi - My driver's side door keeps unlocking and registering as if I am opening it as I am driving. I've attempted to have this fixed (stopped unlocking for about a year) but it has started back up within the last month. It's now come to my attention that upon searching for safety recalls on my car, that there was a recall back in 2012 (12V338000) on my car for what sounds exactly like the issue I've been having. I have an appointment to get Driveshaft Corrosion (20V-770) recall fixed on 11/6, but they do not have the other safety recall associated with my VIN number. Therefore, they are refusing to look at it without payment. I would hate to have to pay for a temporary fix again and I am extremely concerned that I cannot drive my vehicle without it unlocking and am really hoping this reaches the right audience. I am looking for assistance in having this resolved. Thank you!

NHTSA ODI #11551668

Mileage unknown · Jul 25, 2023
Electrical SystemEngineVehicle Speed Control

On July 20th, 2023, while driving home from work, my vehicle without warning made a sudden jerk and all the warning light s came on the dash board. The car had reduced power and acceleration and an automated voice from the dash board warned to pull over the car. I pulled over into a garage who performed a diagnostic. They stated…

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On July 20th, 2023, while driving home from work, my vehicle without warning made a sudden jerk and all the warning light s came on the dash board. The car had reduced power and acceleration and an automated voice from the dash board warned to pull over the car. I pulled over into a garage who performed a diagnostic. They stated the error codes indicated MPI failure (IMA power moter invertor). They also stated there was a Service Bulletin 20-021 for tis issue with this car (same year /model). When a VIN check was performed, the vehicle did not come up on this TSB. I had the car towed to an acura dealer and they ran a diagnostic. They confirmed error codes P1440,P15A5,P0AE1,P0DA8 - all codes listed in the service builletin 20-021 for this vehicle year, make and model. I have no doubt, as the data indicates, this failure/incident was caused by the same issues which are covered under TSB 20-021 and this VIN should be included.

NHTSA ODI #11534323

Mileage unknown · Mar 14, 2023
Air BagsService BrakesCrashInjury

There were two different times my Acura 2013 ILX was involved in two different accidents and the airbags didn’t deploy. 1. Back on 4/2018 brakes didn’t respond properly, then ceased to another vehicle and airbags didn’t deployed. No major injuries, but high bills. 2. January 2019, my husband was rear ended by an Audi, was sent…

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There were two different times my Acura 2013 ILX was involved in two different accidents and the airbags didn’t deploy. 1. Back on 4/2018 brakes didn’t respond properly, then ceased to another vehicle and airbags didn’t deployed. No major injuries, but high bills. 2. January 2019, my husband was rear ended by an Audi, was sent to the opposite side of the street, car was total loss, airbags never deployed. He suffered MAJOR injuries, couldn’t walk for two months, used a walker after that for over two years, suffered dislocated discs, neck and his whole body is not the same anymore. Can’t tell anymore how many procedures he has been through.

NHTSA ODI #11511701

Mileage unknown · Sep 20, 2022
Unknown Or Other

The car jerked while braking and then gave the code p1440. The ima light, check engine light, and brake light all came on. The car feels like it is dragging and does not have the same power. The battery is no longer charging nor is it indicating the battery is being used. It continues the have a jerk at rhe end of braking. It se…

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The car jerked while braking and then gave the code p1440. The ima light, check engine light, and brake light all came on. The car feels like it is dragging and does not have the same power. The battery is no longer charging nor is it indicating the battery is being used. It continues the have a jerk at rhe end of braking. It seems there is an extension warranty for certain Vins of this same year and make but mine is not included even though it has having the same problem

NHTSA ODI #11485532

91,000 miles · Dec 7, 2021
Air BagsCrashInjury

The contact owned a 2013 Acura ILX . The contact stated that while driving approximately 40 mph, the vehicle in front of her suddenly stopped. The driver depressed the brake pedal however, was unable to stop in time and crashed into the rear of an unknown Audi. The air bags did not deploy. The contact sustained injuries to the …

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The contact owned a 2013 Acura ILX . The contact stated that while driving approximately 40 mph, the vehicle in front of her suddenly stopped. The driver depressed the brake pedal however, was unable to stop in time and crashed into the rear of an unknown Audi. The air bags did not deploy. The contact sustained injuries to the chest, neck, and head. The driver believes the impact knocked her unconscious. The contact stated she was in pain and had to seek medical attention. A Police report was filed. There was no reported fire. The vehicle was towed to an independent lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The insurance company deemed the vehicle a total loss. The manufacturer was contacted however, no further assistance was provided. The approximate failure mileage was 91,000.

NHTSA ODI #11442978

Mileage unknown · May 4, 2021
Power Train

TL* THE CONTACT OWNS A 2013 ACURA ILX. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V770000 (POWER TRAIN) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE VEHICLE WAS TAKEN TO ED NAPLETON ACURA (745 W LAKE ST, ELMHURST, IL 60126, (630) 559-0447) WHERE IT WAS CONFIRMED THAT THE PART WAS NOT YE…

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TL* THE CONTACT OWNS A 2013 ACURA ILX. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V770000 (POWER TRAIN) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE VEHICLE WAS TAKEN TO ED NAPLETON ACURA (745 W LAKE ST, ELMHURST, IL 60126, (630) 559-0447) WHERE IT WAS CONFIRMED THAT THE PART WAS NOT YET AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER HAD EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

NHTSA ODI #11415077

Official recalls

6

20V770000 · Power Train:driveline:driveshaft

Dec 10, 2020

Honda (American Honda Motor Co.) is recalling certain 2013-2015 Acura ILX, 2013 Acura ILX Hybrid, 2012 Honda Civic Hybrid, and 2007-2008 Honda Fit vehicles with a manual transmission and 2009-2013 Honda Fit vehicles originally sold, or ever registered, in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, and Wisconsin. The drive shafts' protective coating may not have been applied properly during manufacturing, making it more susceptible to damage from road salt, or other contaminants, and potentially cause it to break.

Consequence & remedy

Consequence: A broken drive shaft may cause a sudden loss of drive power. The vehicle could also roll away if the parking brake has not been applied before the vehicle has been exited. Either condition can increase the risk of a crash or injury.

Remedy: Honda will notify owners, and dealers will inspect the drive shafts, replacing either the left or right drive shaft, if necessary, free of charge. Owners were notified of the safety risk with an interim letter mailed February 2, 2021. A second letter will be sent once the remedy is available. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are P9M, PAV, BAY, TAX, CA0, and MAZ.

19V500000 · Air Bags:frontal:driver Side:inflator Module

Jun 27, 2019

Honda (American Honda Motor Co.) is recalling certain 2013 Acura ILX, 2015 RDX, 2005-2010 and 2012 RL, 2009-2014 TL, 2010 and 2012 ZDX, 2007-2011 CR-V, 2011-2013 and 2015 CR-Z, 2009-2013 Fit, 2013 Fit EV, 2010-2011 and 2013 Insight and 2007-2014 Ridgeline vehicles. These vehicles are equipped with driver frontal air bag inflators assembled as a recall remedy part or replacement service part, that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Honda will notify owners, and dealers will replace the driver frontal air bag inflator, free of charge. The recall began August 12, 2019. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are S5B and W59.

19V182000 · Air Bags:frontal:driver Side:inflator Module

Mar 6, 2019

Honda (American Honda Motor Co.) is recalling specific 2003 Acura 3.2CL, 2013-2016 ILX, 2013-2014 ILX Hybrid, 2003-2006 MDX, 2007-2016 RDX, 2002-2003 3.2TL, 2004-2006, and 2009-2014 TL, 2010-2013 ZDX and 2001-2007 and 2009 Honda Accord, 2001-2005 Civic, 2003-2005 Civic Hybrid, 2001-2005 Civic GX NGV, 2002-2007 and 2010-2011 CR-V, 2003-2011 Element, 2007 Fit, 2002-2004 Odyssey, 2003-2008 Pilot, and 2006-2014 Ridgeline vehicles. The affected vehicles received a replacement driver air bag inflator as part of a previous Takata inflator recall remedy or a replacement driver air bag module containing the same inflator type as a service part. Due to a manufacturing error, in the event of a crash necessitating deployment of the driver frontal air bag, these inflators may explode.

Consequence & remedy

Consequence: An explosion of an inflator within the driver frontal air bag module may result in sharp metal fragments striking the driver, front seat passenger or other occupants resulting in serious injury or death.

Remedy: Honda will notify owners, and dealers will replace the driver's air bag inflator with an alternate inflator, free of charge. The recall began April 10, 2019. Honda owners may contact customer service at 1-888-234-2138. Honda's number for this recall is O41. Acura owners may contact customer service at 1-888-234-2138. Acura's number for this recall is U40.

16V061000 · Air Bags:frontal:driver Side:inflator Module

Feb 3, 2016

Honda (American Honda Motor Co.) is recalling certain model year 2007-2011 Honda CR-V, 2011-2015 CR-Z, 2010-2014 FCX, and Insight, 2009-2013 Fit, 2013-2014 Fit EV, 2007-2014 Ridgeline, 2013-2016 Acura ILX, 2013-2014 Acura ILX Hybrid, 2007-2016 RDX, 2005-2012 Acura RL, 2009-2014 Acura TL, and 2010-2013 Acura ZDX vehicles. The affected vehicles are equipped with a dual-stage driver frontal air bag that may be susceptible to moisture intrusion which, over time, could cause the inflator to rupture.

Consequence & remedy

Consequence: In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Honda will notify owners, and dealers will replace the inflator, free of charge. The recall began March 2017. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are JY0, JY1, and JY2.

14V323000 · Exterior Lighting:headlights

Jun 13, 2014

American Honda Motor Co., Inc (Honda) is recalling certain model year 2013 Acura ILX vehicles manufactured January 16, 2012 to March 1, 2013, ILX Hybrid vehicles manufactured January 12, 2012 to February 7, 2013, and certain model year 2014 ILX vehicles manufactured May 2, 2013, to May 31, 2014, and ILX Hybrid vehicles manufactured October 18, 2013 to February 19, 2014. Excessive heat temperatures around the headlight bulb and reflector unit may diminish the output of the headlight and cause smoke, melting, and fire. Thus, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard No. 108, "Lamps, Reflective Devices, and Associated Equipment."

Consequence & remedy

Consequence: The diminished light output may decrease the driver's visibility, increasing the risk of a crash. Additonally, the excessive heat coming from around the bulb and reflector could cause the headlights to overheat, increasing the risk of a fire.

Remedy: Honda will notify owners, and dealers will replace the headlights, free of charge. The recall began in July 2014. Owners may contact Acura customer service at 1-800-862-2872. Honda's number for this recall is JE9.

12V338000 · Latches/locks/linkages:doors:latch

Jul 19, 2012

Honda is recalling certain model year 2012 Honda CR-V and model year 2013 Acura ILX vehicles. If the manual or power door lock is activated while an interior front door handle is being operated by an occupant, the cable connecting the interior door handle to the door latch mechanism may become loose and move out of position. There is a possibility that the cable can move far enough out of position to prevent the door from properly latching.

Consequence & remedy

Consequence: If the door is not fully latched, the door may open while driving or in a crash, increasing the risk of personal injury to the vehicle occupants.

Remedy: Honda will notify owners, and dealers will replace the front door latch assemblies in the affected vehicles, free of charge. Additionally, the interior front door handles in certain Honda CR-Vs will also be replaced, free of charge. The safety recall is expected to begin on, or about, August 16, 2012. Owners may contact Honda customer service at 1-800-999-1009.

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.