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2012 Toyota Tacoma

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2012 Toyota Tacoma do not stand out strongly from the model-year median of 228.5.

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When problems were reported

Mileage at the reported incident

261 reports with mileage · 34 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.

  • Engine. Review the 122 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 52 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 35 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

16 crash reports0 fire reports6 injury reports

Power Train complaints

35 reports
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71,000 miles · Jul 30, 2025
Power TrainStructureTires

The contact owns a 2012 Toyota Tacoma. The contact stated that the undercarriage of the vehicle was significantly rusted. The TPMS warning light was illuminated. The vehicle was taken to the local dealer, where it was repaired under the warranty; however, the failure recurred. The dealer informed the contact that the rear bumper…

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The contact owns a 2012 Toyota Tacoma. The contact stated that the undercarriage of the vehicle was significantly rusted. The TPMS warning light was illuminated. The vehicle was taken to the local dealer, where it was repaired under the warranty; however, the failure recurred. The dealer informed the contact that the rear bumper and brackets were rusted, and there was no recall or warranty coverage. The contact stated upon pulling into the driveway of the residence, the contact noticed a trail of fluid leak on the street. The contact stated that the transmission lines were fractured due to rust. The vehicle was taken to an independent mechanic, where the contact was informed that the vehicle was significantly rusted. The vehicle was not repaired. The manufacturer was contacted and a case was filed. The failure mileage was approximately 71,000.

NHTSA ODI #11677221

Mileage unknown · Dec 28, 2024
Power Train

My truck started having a vibration when driving around 45-55 mph. This problem first became noticeable when it had about 115,000 miles on it. Over time the speed that the vibration became noticeable at gradually increased. By 125,000 miles on the truck, it was vibrating hard between 60 and 70 mph. The dealership determined …

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My truck started having a vibration when driving around 45-55 mph. This problem first became noticeable when it had about 115,000 miles on it. Over time the speed that the vibration became noticeable at gradually increased. By 125,000 miles on the truck, it was vibrating hard between 60 and 70 mph. The dealership determined that the problem was that the drive shaft was out of balance and that it had to be replaced. They replaced the drive shaft, but this doesn't seem like a problem that should creep up with that relatively few miles on the vehicle, and I have read that if the drive shaft actually fails, it can severely damage the vehicle and potentially cause injury.

NHTSA ODI #11632871

Mileage unknown · Nov 11, 2022
Power Train

Drivetrain vibration and cricket chripping noise; likly coming from propeller shaft

NHTSA ODI #11493240

110,000 miles · Jan 21, 2021
Fuel/propulsion SystemPower TrainVehicle Speed Control

WHEN ACCELERATING THE TRUCK LOST ALL POWER AND ACCELERATION. ENGINE LIGHT IS ON. ENGINE WILL NOT INCREASE RPM WHEN ACCELERATOR IS PRESSED. TRUCK WILL SLOWLY DRIVE BUT IS UNSAFE TO BE ON THE ROAD AS IT SLOWLY ACCELERATES UP TO 20-30MPH MAX. VEHICLE WAS MERGING INTO TRAFFIC FROM PARKING LOT ACCESS.

NHTSA ODI #11389313

108,243 miles · Mar 9, 2020
Power TrainSuspension

WHEN I'M DRIVING THE TRUCK BETWEEN 30 AND 40 MILES AN HOUR THE TRUCK FEEL LIKE WANTS TO STOP AND SAUNDS WUIRD I THINK IS THE TORQUE CONVERTER IS NOT DOING HIS JOB PROPERLY ALSO THAT SUSPENSION IS GETTING RESTLESS SO BAD AND SO QUICKLY AND THE CHATS ARE SO HARD SO I DON'T KNOW IF IT IS SOMETHING WRONG WITH IT OR IT'S JUST NORMAL …

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WHEN I'M DRIVING THE TRUCK BETWEEN 30 AND 40 MILES AN HOUR THE TRUCK FEEL LIKE WANTS TO STOP AND SAUNDS WUIRD I THINK IS THE TORQUE CONVERTER IS NOT DOING HIS JOB PROPERLY ALSO THAT SUSPENSION IS GETTING RESTLESS SO BAD AND SO QUICKLY AND THE CHATS ARE SO HARD SO I DON'T KNOW IF IT IS SOMETHING WRONG WITH IT OR IT'S JUST NORMAL IN THE CAR AND SAW THE THINGS I'VE BEEN CHECKING ON IT 2012 TOYOTA AND I HAD IT FOR THREE YEARS ALSO IT TAKES TOO LONG TO HEAT UP IN WINTER TIME

NHTSA ODI #11316975

Mileage unknown · May 9, 2019
Air BagsElectronic Stability Control (esc)Power Train

60,000 MILES. THREE YEARS AGO THE AIRBAG LIGHT CAME ON. WE BROUGHT IT AND PAID FOR DIAGNOSTICS BUT NO ANSWERS. NOW THE CHECK ENGINE LIGHT AND TRACK OFF ARE LIGHTING (NOT RELATED TO FIRST ISSUE) AND THE TRUCK IS IN SLOWDOWN MODE. WE REPLACED THE GAS-CAP BUT IT DIDN'T FIX THE ISSUE. DISAPPOINTED IN WHAT USED TO BE A QUALITY COMPAN…

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60,000 MILES. THREE YEARS AGO THE AIRBAG LIGHT CAME ON. WE BROUGHT IT AND PAID FOR DIAGNOSTICS BUT NO ANSWERS. NOW THE CHECK ENGINE LIGHT AND TRACK OFF ARE LIGHTING (NOT RELATED TO FIRST ISSUE) AND THE TRUCK IS IN SLOWDOWN MODE. WE REPLACED THE GAS-CAP BUT IT DIDN'T FIX THE ISSUE. DISAPPOINTED IN WHAT USED TO BE A QUALITY COMPANY.

NHTSA ODI #11206390

103,000 miles · Apr 12, 2019
Power TrainUnknown Or Other

CHECK ENGINE LIGHT WITH TRAC OFF LIGHT COMES ON. NO POWER. AIR IDOL CONTROL VALVE STUCK OPEN.

NHTSA ODI #11195925

144,000 miles · Apr 5, 2019
EnginePower TrainVehicle Speed Control

DURING NORMAL DRIVING, THE CHECK ENGINE LIGHT AND TRACTION CONTROL OFF LIGHT CAME ON AND TRUCK IMMEDIATELY WENT IN TO LIMP-HOME MODE. I HAD IT SCANNED FOR CODES AT THE LOCAL AUTO PARTS STORE AND IT CAME BACK WITH P2440 AND P2442 WHICH SEEMS LIKE A COMMON ISSUE WITH A VALVE IN THE SECONDARY AIR INJECTION SYSTEM. I QUICK GOOGLE …

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DURING NORMAL DRIVING, THE CHECK ENGINE LIGHT AND TRACTION CONTROL OFF LIGHT CAME ON AND TRUCK IMMEDIATELY WENT IN TO LIMP-HOME MODE. I HAD IT SCANNED FOR CODES AT THE LOCAL AUTO PARTS STORE AND IT CAME BACK WITH P2440 AND P2442 WHICH SEEMS LIKE A COMMON ISSUE WITH A VALVE IN THE SECONDARY AIR INJECTION SYSTEM. I QUICK GOOGLE SEARCH SHOWED THAT SOME 2012 TACOMA OWNERS ARE GETTING THIS COVERED UNDER A SPECIAL WARRANTY EXTENSION, SO I PUTTERED OVER TO THE TOYOTA DEALERSHIP EXPECTING TO HEAR THE SAME STORY, BUT THEY ARE TELLING ME THE ECM COMPUTER IS BAD. WHICH I AM TRYING TO GET CLARIFICATION ON SINCE I CAN'T FIND ANY ECM FAILURE ISSUES FOR THIS MAKE AND MODEL YEAR.

NHTSA ODI #11194082

95,000 miles · Jan 10, 2019
Power Train

DRIVE TRAIN VIBRATION. TOYOTA HAS A WARRANTY ENHANCEMENT PROGRAM FOR THIS ISSUE THROUGH THE 2011 MODEL, BUT THIS IS A 2012 MODEL WITH SAME ISSUE. SITUATION OCCURS DURING ACCELERATION.

NHTSA ODI #11166204

33,000 miles · Apr 5, 2018
Power Train

TL* THE CONTACT OWNS A 2012 TOYOTA TACOMA. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE FAILED TO ACCELERATE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO DAYTON TOYOTA (2291 US-130, DAYTON, NJ 08810, 732-329-9191), BUT THE FAILURE COULD NOT BE DUPLICATED. THE FAILURE RECURRED SEVERAL TIMES AND THE VEHICLE…

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TL* THE CONTACT OWNS A 2012 TOYOTA TACOMA. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE FAILED TO ACCELERATE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO DAYTON TOYOTA (2291 US-130, DAYTON, NJ 08810, 732-329-9191), BUT THE FAILURE COULD NOT BE DUPLICATED. THE FAILURE RECURRED SEVERAL TIMES AND THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER. THE TECHNICIAN DIAGNOSED THAT THE CLUTCH NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES AND OFFERED TO COVER THE COST OF THE PARTS WHILE THE CONTACT COVERED THE LABOR COST. THE FAILURE MILEAGE WAS 33,000.

NHTSA ODI #11083437

Official recalls

7

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.

14V475000 · Equipment:other:labels

Aug 4, 2014

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2008-2014 FJ Cruiser and Tacoma vehicles equipped with accessory wheels and tires installed by Toyota or dealers prior to the vehicle's first sale. The affected vehicles may list incorrect spare tire size and/or cold tire inflation information on the tire placard. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard No. 110, "Tire Selection and Rims for Passenger Cars."

Consequence & remedy

Consequence: If the spare tire is inflated to the incorrect pressure provided on the placard, tire failure may occur while it is being driven on, increasing the risk of a crash.

Remedy: For the involved vehicles, overlay stickers to correct the tire placard will either be mailed to owners or provided to dealers for placement over the incorrect information on the placard. The recall is expected to begin in September 2014. Owners may contact Toyota customer service at 1-800-331-4331.

14V054000 · Electronic Stability Control (esc); Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Feb 12, 2014

Toyota is recalling certain model year 2012 and 2013 Toyota Tacoma and Lexus RX350 vehicles and certain model year 2012 Toyota Rav4 vehicles. In the affected vehicles, the brake system contains a brake actuator that adjusts the fluid pressure of each wheel cylinder. An electrical component within the actuator may experience an increased resistance resulting in the illumination of various warning lights, including those for the Vehicle Stability Control (VSC) system, Antilock Brake System (ABS), and Traction Control system.

Consequence & remedy

Consequence: If this occurs, these systems could become inoperative, reducing the directional control assistance, increasing the risk of a crash.

Remedy: Toyota will notify owners, and Toyota and Lexus dealers will update the software for the Skid Control electronic control unit, free of charge. The recall began on March 28, 2014. Owners may contact Toyota at 1-800-331-4331.

Additional source detail variants (2)

Electronic Stability Control (esc)

Toyota is recalling certain model year 2012 and 2013 Toyota Tacoma and Lexus RX350 vehicles and certain model year 2012 Toyota Rav4 vehicles. In the affected vehicles, the brake system contains a brake actuator that adjusts the fluid pressure of each wheel cylinder. An electrical component within the actuator may experience an increased resistance resulting in the illumination of various warning lights, including those for the Vehicle Stability Control (VSC) system, Antilock Brake System (ABS), and Traction Control system.

Consequence: If this occurs, these systems could become inoperative, reducing the directional control assistance, increasing the risk of a crash.

Remedy: Toyota will notify owners, and Toyota and Lexus dealers will update the software for the Skid Control electronic control unit, free of charge. The recall began on March 28, 2014. Owners may contact Toyota at 1-800-331-4331.

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Toyota is recalling certain model year 2012 and 2013 Toyota Tacoma and Lexus RX350 vehicles and certain model year 2012 Toyota Rav4 vehicles. In the affected vehicles, the brake system contains a brake actuator that adjusts the fluid pressure of each wheel cylinder. An electrical component within the actuator may experience an increased resistance resulting in the illumination of various warning lights, including those for the Vehicle Stability Control (VSC) system, Antilock Brake System (ABS), and Traction Control system.

Consequence: If this occurs, these systems could become inoperative, reducing the directional control assistance, increasing the risk of a crash.

Remedy: Toyota will notify owners, and Toyota and Lexus dealers will update the software for the Skid Control electronic control unit, free of charge. The recall began on March 28, 2014. Owners may contact Toyota at 1-800-331-4331.

13V494000 · Tires:temporary/emergency Spare Tire

Oct 17, 2013

Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2012-2013 Tacoma vehicles equipped with 18" Maverick Alloy Wheels. In the affected vehicles, the spare tire requires the use of a different style of lug nut to attach it to the vehicle than the other wheels use. These lug nuts were not provided with the vehicle.

Consequence & remedy

Consequence: If the spare tire/wheel is installed on the vehicle using the lug nuts from another wheel, damage to the wheel could result and may eventually lead to a loose wheel, increasing the risk of a crash.

Remedy: SET will notify owners, and dealers will: (a) Install a Warning Label on the spare tire/wheel, (b) supply a bag containing proper spare wheel lug nuts, and (c) place an Owner's Manual Addendum in the vehicle's glove box. The recall began on January 23, 2014. Owners may contact SET at 1-954-429-2000.

13V123000 · Equipment:other:labels

Apr 9, 2013

Southeast Toyota is recalling certain model year 2008 and 2010-2013 Toyota Tundra, 2010-2012 Rav4, 2012 Toyota Sequoia, 2010-2011 Toyota Corolla, 2010-2011 Toyota Camry and Camry Hybrid, 2010-2013 Toyota Highlander and Highlander Hybrid, 2010-2013 Toyota FJ Cruiser, 2011 Toyota Land Cruiser, 2010-2013 Toyota Venza, 2010-2011 Toyota 4Runner, 2010-2013 Toyota Tacoma, 2011-2012 Toyota Sienna, 2012 Toyota Prius, 2013 Scion FR-S, 2011 Scion XD, 2011 Scion XB, and 2012 Scion TC vehicles. These vehicles were sold with labels that were outside the allowable one percent of accuracy of actual weight added. Thus, 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 inaccurate label could lead to owners overloading their vehicles and tires. An overloaded vehicle can result in a tire failure which may result in a vehicle crash, personal injury, or property damage.

Remedy: Southeast Toyota will notify owners and provide a corrected label with instructions concerning its installation. A small group of the affected vehicles will need additonal remedies which are still being developed. The recall began on May 28, 2013. Owners may contact Southeast Toyota at 1-800-301-6859.

13V014000 · Air Bags:frontal:sensor/control MODULE-INACTIVE ; Seats

Jan 16, 2013

Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.

Consequence & remedy

Consequence: If the front passenger seat occupant sensing system is out of calibration, the front passenger airbags may not deploy or they may deploy inappropriately for the passenger's size and position. This could increase the risk of personal injury during the event of a vehicle crash necessitating airbag deployment.

Remedy: Southeast Toyota will notify owners, and dealers will test the sensitivity of the occupant detection sensors, and recalibrate them as necessary. The recall began on March 21, 2013. Owners may contact Southeast Toyota at 1-800-301-6859.

Additional source detail variants (2)

Seats

Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.

Consequence: If the front passenger seat occupant sensing system is out of calibration, the front passenger airbags may not deploy or they may deploy inappropriately for the passenger's size and position. This could increase the risk of personal injury during the event of a vehicle crash necessitating airbag deployment.

Remedy: Southeast Toyota will notify owners, and dealers will test the sensitivity of the occupant detection sensors, and recalibrate them as necessary. The recall began on March 21, 2013. Owners may contact Southeast Toyota at 1-800-301-6859.

Air Bags:frontal:sensor/control MODULE-INACTIVE

Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.

Consequence: If the front passenger seat occupant sensing system is out of calibration, the front passenger airbags may not deploy or they may deploy inappropriately for the passenger's size and position. This could increase the risk of personal injury during the event of a vehicle crash necessitating airbag deployment.

Remedy: Southeast Toyota will notify owners, and dealers will test the sensitivity of the occupant detection sensors, and recalibrate them as necessary. The recall began on March 21, 2013. Owners may contact Southeast Toyota at 1-800-301-6859.

12V158000 · Equipment:other:labels

Apr 10, 2012

GULF STATES TOYOTA (GST) IS RECALLING CERTAIN MODEL YEAR 2012 TACOMA TRUCKS. THE TIRE AND LOADING INFORMATION PLACARD ON EACH VEHICLE CONTAINS INACCURATE SPARE TIRE SIZE AND COLD INFLATION PRESSURE INFORMATION. THUS, THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110,”TIRE SELECTION AND RIMS.”

Consequence & remedy

Consequence: AN INCORRECT PLACARD COULD LEAD TO IMPROPER SPARE TIRE USE OR REPLACEMENT WHICH COULD RESULT IN A TIRE FAILURE, INCREASING THE RISK OF A CRASH.

Remedy: GST WILL NOTIFY OWNERS, AND SEND EACH OWNER A CORRECTED PLACARD, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JUNE 5, 2012. OWNERS MAY CONTACT GULF STATES TOYOTA, INC. AT 1-713-744-3465.

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

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.