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2016 Toyota 4RUNNER

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2016 Toyota 4RUNNER do not stand out strongly from the model-year median of 58.

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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

42 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.

  • Electrical System. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Suspension. 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.

6 crash reports1 fire reports5 injury reports

What owners actually said

79 reports
Mileage unknown · Aug 31, 2026
Structure

I have a 2016 Metallic Gray Toyota 4Runner and there appears to be a clear-coat defect on the hood and roof.

NHTSA ODI #11761113

Mileage unknown · Aug 11, 2026
Carry Handle, Shell, Base

Swivel motion has started to jam when half locked, base will show half red/half green and refuse to lock. Unlock handle becomes hard to lift to swivel the car seat back to attempt to lock it again. I’ve contacted Evenflo, but waiting to hear back.

NHTSA ODI #11756359

Mileage unknown · Jun 2, 2026
Structure

The paint is failing on this vehicle. The color is 8S6 Nautical Blue Metallic. The paint is peeling on the roof, hood, and two doors. The failure has been confirmed by a body shop.

NHTSA ODI #11741642

Mileage unknown · May 26, 2026
Air BagsService BrakesCrashInjury

We were traveling down the mountain of Mt. Nebo in Dardanelle, AR, around 1:08pm on Friday, May 22, 2026. It had been misty rain for a few hours. As we were traveling down the switchbacks of the mountain, we pressed on the brake to slow the vehicle; however, the vehicle did not slow down any. Since we were coming to the next cur…

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We were traveling down the mountain of Mt. Nebo in Dardanelle, AR, around 1:08pm on Friday, May 22, 2026. It had been misty rain for a few hours. As we were traveling down the switchbacks of the mountain, we pressed on the brake to slow the vehicle; however, the vehicle did not slow down any. Since we were coming to the next curve in the switchback, the decision was made to drive the car into a tree vs. risking flipping the car over the side of the mountain. When the vehicle collided with the tree, none of the air bags deployed. The point of impact was the front driver corner of the car. The car was traveling around 20 MPH at the time of impact (to the best of our knowledge). Problem #1-brake system failure Problem #2-Air bags failed to deploy -What component or system failed or malfunctioned, and is it available for inspection upon request? The brake system & air bags. Both are available for inspection. -How was your safety or the safety of others put at risk? Risk of death associated with the crash. -Has the problem been reproduced or confirmed by a dealer or independent service center? Unavailable at this time due to the extensive damage caused from the crash. -Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not to my knowledge since this happened a few hours before a holiday weekend. -Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? None that we seen.

NHTSA ODI #11740147

Mileage unknown · Mar 24, 2026
Air BagsCrash

On March 6, I was on South bound on Rt 29 in Culpeper County VA at the posted speed limit of 55mph when I hit a debris item on the road. I do not know what it was but it impacted the front skid plate and seems to be no other damage from the impact. There was no contact with the bumper, wheels or otherwise. There was no sudden…

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On March 6, I was on South bound on Rt 29 in Culpeper County VA at the posted speed limit of 55mph when I hit a debris item on the road. I do not know what it was but it impacted the front skid plate and seems to be no other damage from the impact. There was no contact with the bumper, wheels or otherwise. There was no sudden change in speed or loss of control at all. The most dangerous result of this was the deployment of all the airbags (except passenger front airbag, there were no passengers). A police report was filed with Culpeper County Sheriff (case# 2603-0033) and my insurance agency (USAA claim # 016632631-800). The shop where the vehicle was towed (Ace Collision in Madison, VA) expressed surprise at the total deployment of the air bags given the scenario. There were no warning lamps on, the vehicle was in perfect operating condition and all recalls have been addressed according to CarFax

NHTSA ODI #11726606

Mileage unknown · Feb 16, 2026
Structure

I am reporting premature clear coat failure on a 2016 Toyota 4Runner in Magnetic Gray Metallic. The vehicle has approximately 120,000 miles and has been properly maintained, including regular washing and professional ceramic coating. The clear coat on the hood and roof (horizontal panels) is severely peeling and delaminating. Th…

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I am reporting premature clear coat failure on a 2016 Toyota 4Runner in Magnetic Gray Metallic. The vehicle has approximately 120,000 miles and has been properly maintained, including regular washing and professional ceramic coating. The clear coat on the hood and roof (horizontal panels) is severely peeling and delaminating. The protective clear layer has failed, and the base coat is beginning to oxidize. This is not the result of neglect, damage, or improper care. The condition appears to be premature material or manufacturing failure of the clear coat. I have contacted Toyota corporate and opened a case. I was informed there are currently no other documented cases for gray paint and that additional complaints would be required before further investigation. I have read numerous reports in online owner forums indicating this is a common issue affecting 4Runners and other Toyota models, particularly on sun-exposed horizontal panels. However, Toyota has not formally addressed this issue for gray paint vehicles. I am submitting this complaint to document a potential widespread clear coat defect and to request further review.

NHTSA ODI #11718254

Mileage unknown · Feb 12, 2026
Fuel/propulsion System

My 4Runner is hard starting all the time. I’ve replaced the battery, tested the alternator etc. It sounds exactly like the problem of the fuel pump recall. The 4Runner was recalled from 2014-2015, my car was technically put together in Sept 2015, but is labeled a 2016. I believe my fuel pump is failing. I am extremely nervous it…

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My 4Runner is hard starting all the time. I’ve replaced the battery, tested the alternator etc. It sounds exactly like the problem of the fuel pump recall. The 4Runner was recalled from 2014-2015, my car was technically put together in Sept 2015, but is labeled a 2016. I believe my fuel pump is failing. I am extremely nervous it is going to not start one day while I am out camping.

NHTSA ODI #11717449

Mileage unknown · Jan 31, 2026
Back Over Prevention

Rear view camera / backup camera randomly displays blanks screen. Screen has no other issues noted. Has been occurring over the past couple years.

NHTSA ODI #11714728

Mileage unknown · Nov 10, 2025
Back Over Prevention

I have a 2016 Toyota 4Runner at 143,011 miles. When it hit 125,000 mile mark the backup camera stopped working intermittently. The screen in the car goes blank. Turning the car on/off or changing gears does not affect this issue. It’s random and seems to becoming more frequent as more miles are put on. I will take it in however …

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I have a 2016 Toyota 4Runner at 143,011 miles. When it hit 125,000 mile mark the backup camera stopped working intermittently. The screen in the car goes blank. Turning the car on/off or changing gears does not affect this issue. It’s random and seems to becoming more frequent as more miles are put on. I will take it in however when I called them they said since it’s not a known issue I will have to replace it and it’s not cheap!

NHTSA ODI #11698672

125,293 miles · Oct 7, 2025
Back Over Prevention

The contact owns a 2016 Toyota 4Runner. The contact stated that while attempting to reverse, the rearview camera displayed a blank screen. An independent mechanic or dealer was not contacted. The vehicle was not taken to an independent mechanic or dealer to be diagnosed or repaired. The manufacturer was not notified of the failu…

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The contact owns a 2016 Toyota 4Runner. The contact stated that while attempting to reverse, the rearview camera displayed a blank screen. An independent mechanic or dealer was not contacted. The vehicle was not taken to an independent mechanic or dealer to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 125,293.

NHTSA ODI #11691933

Official recalls

8

19V741000 · Air Bags:frontal:driver Side:inflator Module; Air Bags:frontal:passenger Side:inflator Module

Oct 17, 2019

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2016 4Runner, 2003-2006 Tundra, 2003-2013 Corolla, 2009-2010 Corolla Matrix, 2004-2005 RAV4, 2002-2007 Sequoia, 2011-2013 Sienna, 2008-2012 Scion xB, 2008-2009 Lexus IS-F, 2007-2012 Yaris and Lexus ES350, 2010-2017 Lexus GX460, 2002-2010 Lexus SC430, 2006-2012 Lexus IS250 and IS350 and 2010-2015 Lexus IS250C and IS350C vehicles. These vehicles had their driver or passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators 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: Toyota will notify owners. Depending on the vehicle model, dealers will replace the front driver inflator, front passenger airbag inflator, the airbag assembly, or the front passenger airbag sub-assembly and inflator. The recall began November 20, 2019. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Toyota's numbers for this recall are J0A, J0B, and J0C. Lexus' numbers for this recall are JLI, JLJ, and JLK.

Additional source detail variants (2)

Air Bags:frontal:passenger Side:inflator Module

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2016 4Runner, 2003-2006 Tundra, 2003-2013 Corolla, 2009-2010 Corolla Matrix, 2004-2005 RAV4, 2002-2007 Sequoia, 2011-2013 Sienna, 2008-2012 Scion xB, 2008-2009 Lexus IS-F, 2007-2012 Yaris and Lexus ES350, 2010-2017 Lexus GX460, 2002-2010 Lexus SC430, 2006-2012 Lexus IS250 and IS350 and 2010-2015 Lexus IS250C and IS350C vehicles. These vehicles had their driver or passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

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

Remedy: Toyota will notify owners. Depending on the vehicle model, dealers will replace the front driver inflator, front passenger airbag inflator, the airbag assembly, or the front passenger airbag sub-assembly and inflator. The recall began November 20, 2019. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Toyota's numbers for this recall are J0A, J0B, and J0C. Lexus' numbers for this recall are JLI, JLJ, and JLK.

Air Bags:frontal:driver Side:inflator Module

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2016 4Runner, 2003-2006 Tundra, 2003-2013 Corolla, 2009-2010 Corolla Matrix, 2004-2005 RAV4, 2002-2007 Sequoia, 2011-2013 Sienna, 2008-2012 Scion xB, 2008-2009 Lexus IS-F, 2007-2012 Yaris and Lexus ES350, 2010-2017 Lexus GX460, 2002-2010 Lexus SC430, 2006-2012 Lexus IS250 and IS350 and 2010-2015 Lexus IS250C and IS350C vehicles. These vehicles had their driver or passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

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

Remedy: Toyota will notify owners. Depending on the vehicle model, dealers will replace the front driver inflator, front passenger airbag inflator, the airbag assembly, or the front passenger airbag sub-assembly and inflator. The recall began November 20, 2019. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Toyota's numbers for this recall are J0A, J0B, and J0C. Lexus' numbers for this recall are JLI, JLJ, and JLK.

19V005000 · Air Bags:frontal:passenger Side:inflator Module

Jan 9, 2019

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2014-2016 Toyota 4Runner, 2014-2015 Scion xB, Lexus IS350C, IS250C, 2014 Toyota Sienna, Lexus IS-F, and 2014-2017 Lexus GX460 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Toyota is also recalling certain 2011-2013 Toyota Corolla, Corolla Matrix, Lexus IS250, IS350, 2011-2016 4Runner, 2011-2015 Scion xB, Lexus IS350C, IS250C, 2011-2014 Toyota Sienna, Lexus IS-F, 2011-2017 Lexus GX460, and 2011-2012 Lexus ES350 vehicles ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." Toyota is also recalling certain 2010-2013 Toyota Corolla, Corolla Matrix, Lexus IS350, 2010-2016 4Runner, 2010-2013 Lexus IS250, 2010-2015 Scion xB, Lexus IS350C, IS250C, 2010-2017 Lexus GX460, 2010-2014 Lexus IS-F, and 2010-2012 Lexus ES350 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules, used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), 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: Toyota will notify owners. Depending on the vehicle model, dealers will replace the front passenger air bag inflator, or replace the air bag assembly. The recall began February 15, 2019. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's numbers for this recall are "Zone A" Toyota: G0P, Lexus: GLG; "Zone B" Toyota: G0R, Lexus GLH; "Zone C" Toyota: H0A, and Lexus: HLA.

17V763000 · Structure:body:hood

Nov 29, 2017

Southeast Toyota Distributors, LLC (SET) is recalling certain 2015-2018 Toyota 4Runner vehicles equipped with an accessory Billet Grille Overlay installed by SET or provided by SET and installed by SET dealers. The U-nut that secures the overlay grille may fracture, allowing the Billet Grille Overlay to detach from the vehicle.

Consequence & remedy

Consequence: If the Billet Grille Overlay detaches while driving, it can become a road hazard, increasing the risk of a crash.

Remedy: SET will notify owners, and dealers will replace the securing U-nuts with upgraded hardware, free of charge. The recall is expected to begin January 26, 2018. Owners may contact SET customer service at 1-866-405-4226. SET's number for this recall is SET17C.

17V425000 · Equipment; Structure:body:hood:hinge And Attachments

Jul 3, 2017

Southeast Toyota Distributors, LLC (SET) is recalling certain 2011-2016 Toyota Tacoma and 4Runner vehicles equipped with accessory hood scoops installed by SET or SET dealers. The adhesive attaching the hood scoop may weaken, allowing the hood scoop to detach from the vehicle.

Consequence & remedy

Consequence: If the hood scoop detaches, it may become a road hazard, increasing the risk of a crash.

Remedy: SET will notify owners, and dealers will mechanically fasten the scoop to the hood, free of charge. The recall began on September 1, 2017. Owners may contact SET customer service at 1-954-429-2000. SET's number for this recall is SET17B.

Additional source detail variants (2)

Equipment

Southeast Toyota Distributors, LLC (SET) is recalling certain 2011-2016 Toyota Tacoma and 4Runner vehicles equipped with accessory hood scoops installed by SET or SET dealers. The adhesive attaching the hood scoop may weaken, allowing the hood scoop to detach from the vehicle.

Consequence: If the hood scoop detaches, it may become a road hazard, increasing the risk of a crash.

Remedy: SET will notify owners, and dealers will mechanically fasten the scoop to the hood, free of charge. The recall began on September 1, 2017. Owners may contact SET customer service at 1-954-429-2000. SET's number for this recall is SET17B.

Structure:body:hood:hinge And Attachments

Southeast Toyota Distributors, LLC (SET) is recalling certain 2011-2016 Toyota Tacoma and 4Runner vehicles equipped with accessory hood scoops installed by SET or SET dealers. The adhesive attaching the hood scoop may weaken, allowing the hood scoop to detach from the vehicle.

Consequence: If the hood scoop detaches, it may become a road hazard, increasing the risk of a crash.

Remedy: SET will notify owners, and dealers will mechanically fasten the scoop to the hood, free of charge. The recall began on September 1, 2017. Owners may contact SET customer service at 1-954-429-2000. SET's number for this recall is SET17B.

17V291000 · Equipment

May 1, 2017

Gulf States Toyota, Inc (Gulf States) is recalling certain 2016-2017 4Runner vehicles equipped with the TFORCE accessory package. The fasteners for the aftermarket roof rack may have been improperly tightened.

Consequence & remedy

Consequence: If the roof rack fasteners loosen, the roof rack may detach from the vehicle, increasing the risk of a crash.

Remedy: Gulf States will notify owners, and dealers will inspect and, as necessary, tighten the roof rack fasteners, free of charge. The recall began June 15, 2017. Owners may contact Gulf States customer service at 1-800-444-1074. Gulf States' number for this recall is 17R1.

16V937000 · Air Bags:frontal:passenger Side:inflator Module

Dec 21, 2016

Toyota Motor Engineering & Manufacturing (Toyota) is recalling one 2016 Toyota 4Runner vehicle manufactured November 1, 2016 and one 2017 Lexus GX460 vehicle manufactured November 16, 2016. The affected vehicles are equipped with Takata PSPI-LD front passenger air bag inflators that may have been manufactured without ignition booster tablets. As a result, in the event of a crash, the air bag may not fully inflate during deployment of the primary stage. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Consequence & remedy

Consequence: The improper inflation of the passenger air bag may increase the risk of injury in the event of a crash.

Remedy: Toyota dealers have replaced the passenger side air bag modules, free of charge. Toyota notified the affected dealers on December 15, 2016. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is G06, GLR.

16V236000 · Equipment:other:labels; Tires

Apr 22, 2016

Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2016 Toyota Yaris, Rav4, Land Cruiser and 4Runner vehicles, and Scion FR-S, iM, and TC vehicles manufactured January 28, 2016, to March 14, 2016. The Load Carrying Capacity Modification Label may not reflect the correct added weight of the installed accessories. As a result, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims for Passenger Cars."

Consequence & remedy

Consequence: An incorrect label may result in the vehicle being overloaded, increasing the risk of a crash.

Remedy: SET will notify owners, and provide them a corrected label to be installed over the inaccurate label, free of charge. The recall began on June 3, 2016. Owners may contact SET customer service at 1-866-405-4226. SET's number for this recall is SET16A.

Additional source detail variants (2)

Equipment:other:labels

Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2016 Toyota Yaris, Rav4, Land Cruiser and 4Runner vehicles, and Scion FR-S, iM, and TC vehicles manufactured January 28, 2016, to March 14, 2016. The Load Carrying Capacity Modification Label may not reflect the correct added weight of the installed accessories. As a result, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims for Passenger Cars."

Consequence: An incorrect label may result in the vehicle being overloaded, increasing the risk of a crash.

Remedy: SET will notify owners, and provide them a corrected label to be installed over the inaccurate label, free of charge. The recall began on June 3, 2016. Owners may contact SET customer service at 1-866-405-4226. SET's number for this recall is SET16A.

Tires

Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2016 Toyota Yaris, Rav4, Land Cruiser and 4Runner vehicles, and Scion FR-S, iM, and TC vehicles manufactured January 28, 2016, to March 14, 2016. The Load Carrying Capacity Modification Label may not reflect the correct added weight of the installed accessories. As a result, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims for Passenger Cars."

Consequence: An incorrect label may result in the vehicle being overloaded, increasing the risk of a crash.

Remedy: SET will notify owners, and provide them a corrected label to be installed over the inaccurate label, free of charge. The recall began on June 3, 2016. Owners may contact SET customer service at 1-866-405-4226. SET's number for this recall is SET16A.

16V228000 · Equipment:other:labels

Apr 20, 2016

Gulf States Toyota, Inc. (Gulf States) is recalling certain model year 2015-2016 Toyota 4Runner vehicles manufactured September 22, 2014, to March 23, 2016 and equipped with accessories installed by Gulf States. The Load Carrying Capacity Modification Label may not reflect the correct added weight of the installed accessories. As a result, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims for Passenger Cars."

Consequence & remedy

Consequence: An incorrect label may result in the vehicle being overloaded, increasing the risk of a crash.

Remedy: Gulf States will notify owners, and dealers will install an accurate label, free of charge. The recall began on June 1, 2016. Owners may contact Gulf States customer service at 1-800-444-1074. Gulf States' number for this recall is 16R2.

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.