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2018 Toyota Corolla

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2018 Toyota Corolla do not stand out strongly from the model-year median of 129.

About this comparison →

When problems were reported

Mileage at the reported incident

73 reports with mileage · 60 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 35 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

25 crash reports5 fire reports14 injury reports

Fuel/propulsion System complaints

23 reports
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Mileage unknown · Aug 8, 2020
Fuel/propulsion SystemSuspensionUnknown Or Other

THE SUBJECT VEHICLES ARE EQUIPPED WITH A LOW-PRESSURE FUEL PUMP WHICH MAY STOP OPERATING. IF THIS WERE TO OCCUR, WARNING LIGHTS AND MESSAGES MAY BE DISPLAYED ON THE INSTRUMENT PANEL, AND THE ENGINE MAY RUN ROUGH. THIS MAY RESULT IN A VEHICLE STALL, AND THE VEHICLE MAY BE UNABLE TO BE RESTARTED. IF A VEHICLE STALL OCCURS WHILE DR…

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THE SUBJECT VEHICLES ARE EQUIPPED WITH A LOW-PRESSURE FUEL PUMP WHICH MAY STOP OPERATING. IF THIS WERE TO OCCUR, WARNING LIGHTS AND MESSAGES MAY BE DISPLAYED ON THE INSTRUMENT PANEL, AND THE ENGINE MAY RUN ROUGH. THIS MAY RESULT IN A VEHICLE STALL, AND THE VEHICLE MAY BE UNABLE TO BE RESTARTED. IF A VEHICLE STALL OCCURS WHILE DRIVING AT HIGHER SPEEDS, THIS COULD INCREASE THE RISK OF A CRASH.

NHTSA ODI #11343995

7,115 miles · Jun 20, 2020
Air BagsFuel/propulsion SystemSeat Belts

RECEIVED RECALL NOTICE INTERIM NOTICE 4/17/2020 FOR LOW PRESSURE FUEL PUMP RECALL NHTSA # 20V-012. CALLED CURRY TOYOTA AND BROUGHT CAR IN AND RECEIVED A LONER. THEY HAVE MY CAR OVER 70 DAYS NOW WITH NO REMEDY. MY CAR IS UNDER WARRANTY, LESS THAN 24 MONTHS OLD AND HAS A LITTLE OVER 7,000 MILES. I BELIEVE IT SHOULD COME UNDER …

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RECEIVED RECALL NOTICE INTERIM NOTICE 4/17/2020 FOR LOW PRESSURE FUEL PUMP RECALL NHTSA # 20V-012. CALLED CURRY TOYOTA AND BROUGHT CAR IN AND RECEIVED A LONER. THEY HAVE MY CAR OVER 70 DAYS NOW WITH NO REMEDY. MY CAR IS UNDER WARRANTY, LESS THAN 24 MONTHS OLD AND HAS A LITTLE OVER 7,000 MILES. I BELIEVE IT SHOULD COME UNDER THE LEMON LAWS #4. THERE IS NO REMEDY IN SIGHT. PLEASE ADVISE.THIS IS THE SECOND RECALL ON THIS VEHICLE. *TR

NHTSA ODI #11329816

11,000 miles · Jun 15, 2020
Air BagsFuel/propulsion System

AIR BAG WAS REPLACED BUT THE FUEL PUMP WHICH CAUSED THE CAR TO FLOOD OUT AND STALL HAS NOT BEEN FIXED BECAUSE THE PART IS STILL NOT AVAILABLE FOR REPAIRING THE PROBLEM. I REPORTED PROBLEMS TO TOYOTA AND I WAS TOLD THAT THE PART FOR THE FUEL PUMP WAS STILL NOT AVAILABLE. THE CAR STALLED AT A RED LIGHT AND I TOOK THE CAR TO THE …

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AIR BAG WAS REPLACED BUT THE FUEL PUMP WHICH CAUSED THE CAR TO FLOOD OUT AND STALL HAS NOT BEEN FIXED BECAUSE THE PART IS STILL NOT AVAILABLE FOR REPAIRING THE PROBLEM. I REPORTED PROBLEMS TO TOYOTA AND I WAS TOLD THAT THE PART FOR THE FUEL PUMP WAS STILL NOT AVAILABLE. THE CAR STALLED AT A RED LIGHT AND I TOOK THE CAR TO THE DEALER AND I WAS TOLD TO TAKE THE CAR HOME, PARK IT AND DO NOT DRIVE IT BECAUSE OF THE ISSUE. THE DEALER GAVE ME A CAR TO USE AND IT ALSO STALLED .. TOYOTA SENT ME A RECALL NOTICE IN JANUARY OF 2020 BUT THE PART IS STILL NOT AVAILABLE TO FIX THE PROBLEM.*DT*JB *TR

NHTSA ODI #11328977

Mileage unknown · May 21, 2020
Fuel/propulsion SystemUnknown Or Other

THERE'S BEEN A RECALL ON MY CAR FOR 5 MONTHS AND TOYOTA STILL DOES NOT HAVE A REMEDY. I USE MY CAR FOR WORK BUT BECAUSE OF THE RECALL MY COMPANY DOESN'T ALLOW ME TO USE THIS CAR ANY LONGER FOR WORK UNTIL RECALL HAS BEEN COMPLETED. *TR

NHTSA ODI #11325470

Mileage unknown · Apr 23, 2020
Air BagsFuel/propulsion System

TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V024000 (AIR BAGS) AND NHTSA CAMPAIGN NUMBER: 20V012000(FUEL SYSTEM, GASOLINE) HOWEVER, THE PARTS TO DO THE RECALL REPAIRS WERE NOT YET AVAILABLE. THE CONTACT STATED AN UNKNOWN DEALER WAS CONTACTED HOWEVER, NO ASSISTANCE WAS…

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TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V024000 (AIR BAGS) AND NHTSA CAMPAIGN NUMBER: 20V012000(FUEL SYSTEM, GASOLINE) HOWEVER, THE PARTS TO DO THE RECALL REPAIRS WERE NOT YET AVAILABLE. THE CONTACT STATED AN UNKNOWN DEALER WAS CONTACTED HOWEVER, NO ASSISTANCE WAS PROVIDED. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT STATED THAT WHILE DRIVING AT 55 MPH, THE RPM FLUCTUATED AND THE VEHICLE STALLED. THE CHECK ENGINE WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. *LN*JB

NHTSA ODI #11322045

Mileage unknown · Apr 16, 2020
Air BagsFuel/propulsion System

TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 20V012000 (FUEL SYSTEM, GASOLINE) AND 20V024000 (AIR BAGS), HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE D…

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TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 20V012000 (FUEL SYSTEM, GASOLINE) AND 20V024000 (AIR BAGS), HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER BEV SMITH TOYOTA (3350 S US HIGHWAY 1, FORT PIERCE, FL 34982, (844) 974-0333) WAS CONTACTED AND CONFIRMED THAT THE PART WAS NOT AVAILABLE. THE MANUFACTURER WAS NOT CONTACTED OR MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.*CK CONSUMER WAS NOTIFIED OF RECALLED BUT WAS DENIED THE LEMON LAW CLAIM. THERE WAS NO REMEDY FOR A FUEL PUMP.*JB

NHTSA ODI #11321289

Mileage unknown · Apr 6, 2020
Air BagsFuel/propulsion System

TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 20V024000 (AIR BAGS) AND 20V012000 (FUEL SYSTEM, GASOLINE) HOWEVER, THE PARTS TO DO THE RECALL REPAIRS WERE NOT YET AVAILABLE. THOUSAND OAKS TOYOTA (2401 THOUSAND OAKS BLVD, THOUSAND OAKS, CA 91362) WAS CONTACTED AND CONFIRME…

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TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 20V024000 (AIR BAGS) AND 20V012000 (FUEL SYSTEM, GASOLINE) HOWEVER, THE PARTS TO DO THE RECALL REPAIRS WERE NOT YET AVAILABLE. THOUSAND OAKS TOYOTA (2401 THOUSAND OAKS BLVD, THOUSAND OAKS, CA 91362) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUES. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI #11320318

Mileage unknown · Apr 2, 2020
EngineFuel/propulsion System

TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH, THE VEHICLE SHUDDERED AND STALLED. THE CONTACT STATED THAT THERE WAS NO WARNING LIGHTS ILLUMINATED. THE CONTACT PULLED OVER TO INSPECTED THE VEHICLE. THE VEHICLE FAILED TO START AFTERWARDS. THE VEHICLE WAS TOWED TO TOYOTA O…

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TL* THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH, THE VEHICLE SHUDDERED AND STALLED. THE CONTACT STATED THAT THERE WAS NO WARNING LIGHTS ILLUMINATED. THE CONTACT PULLED OVER TO INSPECTED THE VEHICLE. THE VEHICLE FAILED TO START AFTERWARDS. THE VEHICLE WAS TOWED TO TOYOTA OF LAREDO LOCATED AT (6324 BOB BULLOCK LOOP, LAREDO, TX 78041) WHERE THE MECHANIC FOUND NO DEFECT WITH THE VEHICLE. THE CONTACT DISCOVERED THAT THE VEHICLE WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 20V012000 (FUEL SYSTEM, GASOLINE) HOWEVER, THE PART WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND ACKNOWLEDGED THAT PARTS WERE UNAVAILABLE. THE MANUFACTURER AT FIRST DECLINED TO PROVIDE A LOANER VEHICLE BUT AFTER SEVERAL ADDITIONAL FAILURES, A LOANER WAS PROVIDED. THE VEHICLE REMAINED IN THE POSSESSION OF THE DEALER. THE FAILURE MILEAGE WAS UNKNOWN. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI #11320062

8,000 miles · Mar 24, 2020
Air BagsFuel/propulsion System

TL* TAKATA RECALL. THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT STATED THAT THE FUEL WARNING LIGHT DISPLAYED ON THREE DIFFERENT OCCASIONS. THE CONTACT RESET THE FUEL CAP AND THE FUEL WARNING LIGHT RE-ILLUMINATES AFTER 40 ' 50 MILES OF BEING DRIVEN. IN ADDITION, THERE WAS A FUEL ODOR INSIDE THE VEHICLE. THE CONTACT LATER R…

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TL* TAKATA RECALL. THE CONTACT OWNS A 2018 TOYOTA COROLLA. THE CONTACT STATED THAT THE FUEL WARNING LIGHT DISPLAYED ON THREE DIFFERENT OCCASIONS. THE CONTACT RESET THE FUEL CAP AND THE FUEL WARNING LIGHT RE-ILLUMINATES AFTER 40 ' 50 MILES OF BEING DRIVEN. IN ADDITION, THERE WAS A FUEL ODOR INSIDE THE VEHICLE. THE CONTACT LATER RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 20V120000 (FUEL SYSTEM,GASOLINE) AND 20V024000 (AIR BAGS) HOWEVER, THE PARTS TO DO THE REPAIRS WERE UNAVAILABLE. THE CONTACT WAS ALSO CONCERNED THAT THE AIR BAGS MIGHT DEPLOY WITHOUT IMPACT OR NOT DEPLOY DURING AN IMPACT DUE TO 2 OPEN RECALLS ASSOCIATED WITH THE VEHICLE. WESTBURY TOYOTA (1121 OLD COUNTRY RD, WESTBURY, NY 11590) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDIES DUE TO COVID-19. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR BOTH RECALL REMEDIES TO BE AVAILABLE. THE MANUFACTURER HAD BEEN NOTIFIED OF THE FAILURE AND WAS RECOMMENDED TO WAIT FOR ANOTHER RECALL NOTICE IN THE MAIL. THE FAILURE MILEAGE WAS 8,000. VIN TOOL CONFIRMS THAT PARTS NOT AVAILABLE. *DT*JB

NHTSA ODI #11319171

Mileage unknown · Mar 16, 2020
Air BagsFuel/propulsion System

THESE NEED TO BE RESOLVED ASAP. WHY IS THERE A DELAY?

NHTSA ODI #11318224

Official recalls

3

20V024000 · Air Bags: Air Bag/restraint Control Module

Jan 17, 2020

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2011-2019 Corolla, 2011-2013 Matrix, 2012-2018 Avalon, and 2013-2018 Avalon Hybrid vehicles. During certain crashes, the air bag electronic control unit (ECU) may malfunction, possibly disabling the deployment of the air bags and/or seat belt pretensioners.

Consequence & remedy

Consequence: In the event of a crash, air bags and/or seat belt pretensioners that do not deploy as intended may increase the risk of injury.

Remedy: Toyota will notify owners, and dealers will inspect the ECU and install a noise filter between the air bag control module and its wire harness, as necessary, free of charge. Owners were notified of the safety risk beginning March 2, 2020. A second letter notifying owners of the remedy repair will be mailed between March 16, 2020 and June 27, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's numbers for this recall are 20TB03, 20TA03 and 20TA05.

20V012000 · Fuel System, Gasoline:delivery:fuel Pump

Jan 13, 2020

Toyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 300, RC 350, GS 350, GX 460, IS 300, LC 500, LS 500, LX 570, RX 350L, and 2019 Toyota Avalon and Corolla, and certain Lexus NX 300, and ES 350 vehicles on January 13, 2020. On March 4, 2020, Toyota expanded the recall to include certain 2014-2015 Toyota 4Runner and Land Cruiser, 2018 Avalon, Corolla, 2014 FJ Cruiser, 2017 Sienna and Lexus 2018 ES 350, 2018-2019 GS 300, 2013-2014 GS350, 2014-2015 GX 460, IS 350 and LX 570, 2014 IS F, 2018-2019 IS 350, LC 500H and LS 500H, 2013-2015 LS 460, 2015 NX 200T and RC350, 2017 RC 200T and RX 350. Toyota also removed the 2018-2019 Toyota 4Runner and Land Cruiser and 2018-2019 Lexus GX 460 and LX 570 and 2019 NX300 from inclusion in this recall. On March 19, 2020, Toyota expanded the recall to include 2015 Lexus GS350 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.

Remedy: Toyota will notify owners, and dealers will replace the fuel pump, free of charge. The recall began May 4, 2020. 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 20TB02 and 20TA02 for Toyota vehicles and 20LB01 and 20LA01 for Lexus vehicles.

19V503000 · Equipment:other:labels

Jun 28, 2019

Southeast Toyota Distributors, LLC (SET) is recalling certain 2017-2019 Toyota Camry, Corolla, Rav4, Sienna, and Yaris iA vehicles equipped with factory-installed floor mats. The load carrying capacity modification label may be incorrect. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Consequence & remedy

Consequence: An incorrect label may lead to unintentionally overloading the vehicle, increasing the risk of a crash.

Remedy: SET will notify owners and provide a corrected label for placement over the inaccurate label, free of charge. The recall began August 23, 2019. Owners may contact Toyota customer service at 1-888-270-9371. SET's number for this recall is SET19A.

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

2

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.

EA19001 · Electrical Overstress

Opened Apr 19, 2019 · Closed Sep 19, 2024

Status: closed (inferred from source dates) · Air Bags: Air Bag/restraint Control Module

The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect.  During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW.  The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with manufacturer design specifications.  The ECU in the subject vehicles contains a model DS84 application-specific integrated circuit (ASIC) which controls the communication of the crash sensor signal, firing commands (i.e., when to deploy the airbag(s) and/or pretensioners), and fault information (e.g., diagnostic trouble codes). In September 2016, FCA announced recall 16V-668 for certain model year (MY) 2010 to 2014 Chrysler, Dodge and Jeep products manufactured with the subject ZF-TRW ACU.  In this recall, FCA discussed an EOS condition that resulted in a failure of the subject DS84 ASIC, which caused air bag non-deployment.  FCA noted that the defect condition had only been observed in vehicles equipped with sensor harnessing routed across the front of the vehicle.  Other FCA vehicles that also used the subject ACU, but were not equipped with cross-car harnessing, had not experienced EOS failures, despite similar time in service. During the course of this investigation, ODI sent two separate Information Request (IR) letters to six vehicle manufactures (including FCA, Hyundai, Honda, Kia, Mitsubishi, and Toyota) and one IR letter to ZF-TRW.  These IR letters resulted in ODI receiving comprehensive data from these manufacturers and suppliers. Studies of this data found that the DS84 ASIC does not have sufficient protection against negative electrical transients or electrical overstress (“EOS”) that can be generated in certain severe crashes.  An electrical transient occurs when the electrical power supplied to a circuit changes momentarily over a short duration of time.   In these severe crash cases, the crash sensors and other powered wiring can be damaged and short circuited so as to create a negative electrical transient of sufficient intensity and duration (that are outside the vehicle manufacturer's specification) to damage the ASIC before the restraint device deployment signal is received by the SRS ECU.  This damaged signal can lead to incomplete or nondeployment of the air bags and/or pretensioners.  Airbag non-deployment and/or lack of pretensioner operation can increase the risk or severity of injury in a crash.A total of 8 fatalities and 14 injuries were associated with known EOS events. The common element in all investigated manufacturers vehicles is the SRS ECU containing a DS84 ASIC manufactured by ZF-TRW.  The risk associated with the ASIC is equally shared among all OEMS involved in the investigation.  The actual real-world risk can be mitigated by other factors which were assessed by ODI during this investigation. The first mitigating factor involves protections built into the ACU design which protect the DS84 ASIC from damage.  There are multiple strategies and levels of protection employed by different OEMs that provide effective EOS mitigation.  The two most common strategies at the ACU level are circuit protection diodes on the remote senor signal lines, and current limiting resistors that protect critical components. The second mitigating factor is found at the vehicle level and involves the location and routing of the wires leading from the crash sensors to the SRS ECU.  If the wires are well protected in a crash and are not routed with other power wires carrying large currents, the risk for an EOS event is significantly reduced or eliminated. These design specific factors combine to produce a spectrum of risk for the vehicles equipped with ACUs using the DS84 ASIC.  Given the many of years of field exposure, it is possible to divide the subject population into two groups; vehicles which have experienced EOS events, and vehicles which have not experienced EOS field events. Four of the six OEMs involved in this investigation have experienced EOS field events on at least one of their models equipped with a DS84 ASIC.  All vehicle models (including the Toyota models identified in the Failure Report Summary of the opening resume for this investigation) with field events have been recalled.  In an abundance of caution, ODI kept this investigation open five years to monitor field performance and did not identify any field events on vehicles not included in existing safety recalls. Given the spectrum of risk identified in this investigation and that all vehicles with a demonstrated unreasonable risk have been recalled, ODI is closing this investigation. ODI is closing this investigation with the following manufacturer safety recalls: 16V-668, 18E-043, 18V-137, 18V-363, and 20V-024.  With the recall actions taken by the subject vehicle and equipment manufacturers, this investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or model year vehicles outside of the recall scopes. The agency reserves the right to take further action if warranted by the circumstances.

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