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2012 Dodge RAM 2500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2012 Dodge RAM 2500 do not stand out strongly from the model-year median of 275.

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When problems were reported

Mileage at the reported incident

179 reports with mileage · 104 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.

  • Steering. Review the 109 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 51 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

8 crash reports12 fire reports4 injury reports

Steering complaints

109 reports
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40,000 miles · Jul 27, 2015
Steering

WHILE ENTERING HIGHWAY AND GETTING UP TO SPEED ONTO I95, TRUCK STARTED TO VIBRATE. I BACKED OFF THEN TRIED AGAIN TO ACCELERATE, AT THIS TIME THE STEERING WHEEL VIOLENTLY SHOCK IN MY HANDS LEFT AND RIGHT RAPIDLY. I LET OFF SPEED AND IT WASN'T UNTIL I GOT INTO THE BREAK DOWN LANE AT APPROX. 45 MPH THAT I WAS ABLE TO STEER THE VE…

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WHILE ENTERING HIGHWAY AND GETTING UP TO SPEED ONTO I95, TRUCK STARTED TO VIBRATE. I BACKED OFF THEN TRIED AGAIN TO ACCELERATE, AT THIS TIME THE STEERING WHEEL VIOLENTLY SHOCK IN MY HANDS LEFT AND RIGHT RAPIDLY. I LET OFF SPEED AND IT WASN'T UNTIL I GOT INTO THE BREAK DOWN LANE AT APPROX. 45 MPH THAT I WAS ABLE TO STEER THE VEHICLE WITHOUT ANY SHAKING OF THE STEERING WHEEL. I THEN PULLED OUT AGAIN AND RESUMED. THE INCIDENT HAS HAPPENED A FEW ADDITIONAL TIMES MOSTLY WHILE TRANSFERRING FROM SOLID PAVEMENT TO CROSSING BRIDGES. I MADE APPOINTMENT DISCUSSING THE ISSUE. I TOOK TRUCK IN THEY ROTATED TIRES AND IT WAS GONE FOR A LITTLE WHILE. NOW HERE IT IS JULY AND THE TRUCK IS STARTING TO REACT THAT WAY AGAIN, MOSTLY WHILE TRAVELING ON BRIDGES. THE LEFT ARM HAD PREVIOUS BEEN REPLACED AND STILL HAVE THIS ISSUE.

NHTSA ODI #10743647

82,000 miles · Jul 4, 2015
Steering

DRIVING ON FREEWAY 55 MPH TOWING HEAVY DUTY CONCRETE TRAILER ( 2 AXLE 4 YARD W/REAR MOUNTED MIXER) AND TRUCK VIOLENTLY STARTED SHAKING BAD , LEAVING ME WITH NO CONTROL . HAVE INVESTED OVER$1000 IN PARTS ALONE, WITH NO LUCK. NOW AM REPLACING ALL TIE RODS AND BALL JOINTS $500 (PARTS ALONE), TO SEE WHAT HAPPENS. THOUGH I HAVE READ…

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DRIVING ON FREEWAY 55 MPH TOWING HEAVY DUTY CONCRETE TRAILER ( 2 AXLE 4 YARD W/REAR MOUNTED MIXER) AND TRUCK VIOLENTLY STARTED SHAKING BAD , LEAVING ME WITH NO CONTROL . HAVE INVESTED OVER$1000 IN PARTS ALONE, WITH NO LUCK. NOW AM REPLACING ALL TIE RODS AND BALL JOINTS $500 (PARTS ALONE), TO SEE WHAT HAPPENS. THOUGH I HAVE READ THERE IS NO FIX??? CANT SELL IT CUZ I OWE 36,000 AND IT IS ONLY WORTH 25,000. I AM 3 MONTHS BEHIND ON PAYMENTS CUZ I NEED TRUCK FOR WORK TO MAKE MONEY, BUT HAS BEEN IN SHOP (UNRELATED WOULD NOT START) FOR 3 WEEKS AND $1300 MORE DOLLARS, FOR SOME FUEL MODULE B.S. AND MY FINANCE COMPANY WANTS TO KNOW WHERE THEIR MONEY IS, AND WHAT IS WRONG WITH THE TRUCK? SO I ASK THEM WHICH MONTH THEY WOULD LIKE TO KNOW ABOUT. THESE TRUCKS ARE GARBAGE!!!! NEVER BUY DODGE ( PROBABLY WHY THEY CHANGED NAME OF TRUCKS TO "RAM") SOME LEGAL MAMBO JUMBO TO SAVE THEIR ASS. AND THE GOVERNMENT BAILED THEM OUT FOR WHAT???? WHAT BROUGHT ME HERE WAS A SEARCH FOR TIE RODS, CAUSE I BELIEVE THAT TO BE MY PROBLEM. AFTER READING ALL THE COMPLAINTS ABOUT TIE RODS BREAKING, I WILL NOW REPLACE ALL TIE RODS ON MY OWN DIME, BECAUSE MY LIFE IS WORTH MORE THAN $1000 DOLLARS OF PARTS. THERE IS DEFINITELY SOMETHING BEING COVERED UP. WHY IN THE HELL CAN DEALERS ONLY GET 15 PARTS (B.S.) A MONTH, BUT I CAN GO EBAY, AMAZON, (WHICH I AM BY THE WAY) AND HAVE THEM IN A COUPLE DAYS. CAUSE I AM PAYING FOR THEM? IS CHRYSLER THAT BROKE ? CRAPPY PRODUCTS, CRAPPY DESIGN, AND GUESS WHAT, NO ACCOUNTABILITY. RECIPE FOR DISASTER IF YOU ASK ME. UP YOURS DODGE , RAM, CHRYSLER, WHATEVER NAME YOUR HIDING BEHIND THIS MONTH.!!!

NHTSA ODI #10731986

58,000 miles · Sep 28, 2014
Steering

WAITING FOR 2 MONTHS FOR RECALL DEEMED UNSAFE TO DRIVE. *TR

NHTSA ODI #10639652

55,740 miles · Sep 25, 2014
Steering

MY LEFT TIE ROD SNAPPED AS I WAS BACKING OUT OF MY PARKING SPOT. THERE IS ALREADY A RECALL ON THIS MATTER. WRITING TO YOU JUST TO GET THIS INFORMATION OUT TO AS MANY AS POSSIBLE. I WENT TO TRI COUNTY CHRYSLER IN POTTSTOWN, PA TO GET AN INSPECTION TO SEE IF I NEEDED THE RECALL WORK DONE. I WAS TOLD THAT I DID NOT NEED THE RECALL …

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MY LEFT TIE ROD SNAPPED AS I WAS BACKING OUT OF MY PARKING SPOT. THERE IS ALREADY A RECALL ON THIS MATTER. WRITING TO YOU JUST TO GET THIS INFORMATION OUT TO AS MANY AS POSSIBLE. I WENT TO TRI COUNTY CHRYSLER IN POTTSTOWN, PA TO GET AN INSPECTION TO SEE IF I NEEDED THE RECALL WORK DONE. I WAS TOLD THAT I DID NOT NEED THE RECALL DONE, SO THEY ENTERED MY VIN IN SAYING THEY COMPLETED THE WORK. SO A COUPLE WEEKS LATER MY TIE ROD SNAPS, SO MUCH FOR NOT NEEDING THE RECALL DONE. SO I GET IT TOWED TO ANOTHER DEALER AND THEY SAY YES I NEED THE RECALL DONE AND DO THE WORK. SOMETHING NEEDS TO BE DONE ABOUT THIS. THIS IS A VERY SERIOUS MATTER, I COULD HAVE BEEN SERIOUSLY INJURED OR COULD HAVE INJURED SOMEONE ELSE. *TR

NHTSA ODI #10639095

Mileage unknown · Sep 11, 2014
Steering

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A NOTIFICATION FOR RECALL NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING). HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSU…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A NOTIFICATION FOR RECALL NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING). HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10632466

40,000 miles · Sep 3, 2014
Steering

PLEASE NOTE THAT OVER A YEAR AGO I RECEIVED A POSTCARD STATING I NEED TO TAKE MY VEHICLE IN FOR A RECALL. I HAVE TRIED TO GET THIS RECALL FIXED BUT ALL CHRYSLER DEALERSHIPS TELL ME I'M ON A WAITING LIST BECAUSE EACH PLACE ONLY GETS A FEW PER MONTH. HOW CAN THIS BE SAFE? I KEEP GETTING POSTCARDS FROM CHRYSLER ASKING WHY I HAVEN'…

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PLEASE NOTE THAT OVER A YEAR AGO I RECEIVED A POSTCARD STATING I NEED TO TAKE MY VEHICLE IN FOR A RECALL. I HAVE TRIED TO GET THIS RECALL FIXED BUT ALL CHRYSLER DEALERSHIPS TELL ME I'M ON A WAITING LIST BECAUSE EACH PLACE ONLY GETS A FEW PER MONTH. HOW CAN THIS BE SAFE? I KEEP GETTING POSTCARDS FROM CHRYSLER ASKING WHY I HAVEN'T COMPLETED THE RECALL FIX? PLEASE TELL ME WHAT ELSE I AM SUPPOSE TO DO? I HAVE EXHAUSTED ALL EFFORTS WITH 3 DIFFERENT DEALERSHIPS TO TRY AND GET THIS PROBLEM FIXED. WHY IS CHRYSLER ONLY MAKING A FEW AVAILABLE TO EACH DEALERSHIP? *TR

NHTSA ODI #10630316

Mileage unknown · Aug 27, 2014
Steering

I SUBMITTED MY ORIGINAL RECALL NOTICE FOR THE REPLACEMENT OF THE LEFT TIE ROD END (N49/NHTSA 13V-529) TO TATE BRANCH DODGE IN ARTESIA NM ON OR ABOUT JANUARY 6, 2014 AND WAS TOLD AT THAT TIME I WAS FIRST ON THE LIST TO BE DONE. I STILL HAVE NOT BEEN CONTACTED BY THE DEALERSHIP REGARDING THE REPAIR. THIS IS BEGINNING TO CONCERN…

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I SUBMITTED MY ORIGINAL RECALL NOTICE FOR THE REPLACEMENT OF THE LEFT TIE ROD END (N49/NHTSA 13V-529) TO TATE BRANCH DODGE IN ARTESIA NM ON OR ABOUT JANUARY 6, 2014 AND WAS TOLD AT THAT TIME I WAS FIRST ON THE LIST TO BE DONE. I STILL HAVE NOT BEEN CONTACTED BY THE DEALERSHIP REGARDING THE REPAIR. THIS IS BEGINNING TO CONCERN ME THAT THEY HAVE NO REGARD FOR ME OR MY FAMILIES SAFETY. *TR

NHTSA ODI #10628669

Mileage unknown · Aug 19, 2014
Steering

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING); HOWEVER, THE PART NEEDED FOR THE REPAIR WAS UNAVAILABLE. THE DEALER STATED THAT THERE WAS A WAITING LIST TO HAVE THE VEHICLE REPAIRED. THE CONTACT BELIEVED THAT THE MANUFACTURER EXCEEDED A REASO…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING); HOWEVER, THE PART NEEDED FOR THE REPAIR WAS UNAVAILABLE. THE DEALER STATED THAT THERE WAS A WAITING LIST TO HAVE THE VEHICLE REPAIRED. THE CONTACT BELIEVED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REPAIR. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10626408

30,000 miles · Aug 19, 2014
Steering

WE RECEIVED A SAFETY RECALL NOTICE N49/NHTSA 13V-529 REGARDING OUR DODGE 2500. WE BEGIN THE PROCESS TO HAVE IT REPAIRED IN JANUARY WITH OUR LOCAL DEALER. IN APRIL WE FINALLY GOT IN TO HAVE IT INSPECTED. WE DO HAVE THE FAULTY LEFT TIE ROD BALL STUD THAT NEEDS REPLACING. OUR LOCAL LINWOOD CHRYSLER DEALER TELLS US, IN SEVERAL A…

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WE RECEIVED A SAFETY RECALL NOTICE N49/NHTSA 13V-529 REGARDING OUR DODGE 2500. WE BEGIN THE PROCESS TO HAVE IT REPAIRED IN JANUARY WITH OUR LOCAL DEALER. IN APRIL WE FINALLY GOT IN TO HAVE IT INSPECTED. WE DO HAVE THE FAULTY LEFT TIE ROD BALL STUD THAT NEEDS REPLACING. OUR LOCAL LINWOOD CHRYSLER DEALER TELLS US, IN SEVERAL ATTEMPTS TO HAVE THE WORK DONE, THAT THEY HAVE ONLY RECEIVED 2 PARTS FROM CHRYSLER. WHEN WE CONTACTED THE 2ND DEALER THEY TOLD US A SIMILAR SITUATION. WE HAVE WENT FROM # 7 ON THE LIST, TO # 31, AND NOW ARE # 41. WHEN WE CONTACTED CHRYSLER WE WERE TOLD THAT 5-6 OF THESE REPAIR PARTS ARE SHIPPED WEEKLY TO EACH DEALERSHIP WITH WAITING LIST. WE HAVE FOUND THAT CHRYSLER IS SHIPPING ONE PART EVERY 21 DAYS TO SOME DEALERSHIPS, SOMETIMES. THEY REPEAT THE SAME "FAIR DISTRIBUTION" LINE TO US, THE CUSTOMER, AND I HAVE NO IDEA WHAT THEY ARE TELLING THEIR DEALERS. WE HAVE NOT DROVE THIS EXPENSIVE, FAULTY TRUCK FOR 8 MONTHS BECAUSE OF THIS SAFETY ISSUE. WE ARE UNHAPPY ABOUT THE LIES OF "PARTS ON ORDER". *TR

NHTSA ODI #10626276

20,000 miles · Jul 28, 2014
Steering

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN ID NUMBER: 13V529000 (STEERING) AND STATED THAT THE PARTS WERE NOT AVAILABLE. THE DEALER DID NOT GIVE A SPECIFIC DATE WHEN THE PARTS WOULD BECOME AVAILABLE. THE CONTACT MADE NUMEROUS CALLS TO SCHEDULE THE RECALL REPAIR AND THE VEHICLE…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN ID NUMBER: 13V529000 (STEERING) AND STATED THAT THE PARTS WERE NOT AVAILABLE. THE DEALER DID NOT GIVE A SPECIFIC DATE WHEN THE PARTS WOULD BECOME AVAILABLE. THE CONTACT MADE NUMEROUS CALLS TO SCHEDULE THE RECALL REPAIR AND THE VEHICLE HAD STILL NOT BEEN INSPECTED NOR REPAIRED. THE MANUFACTURER WAS ALSO CONTACTED AND COULD NOT PROVIDE AN ESTIMATED DATE FOR WHEN THE CONTACTS VEHICLE WOULD RECEIVE THE RECALL REPAIRS. THE CONTACT STATED THAT THE VEHICLE WAS PULLING TO THE LEFT UPON APPLYING THE BRAKE PEDAL TO NO AVAIL. THE CONTACT WAS EXPERIENCING THE FAILURE WHILE WAITING TO RECEIVE THE RECALL REPAIR. THE APPROXIMATE FAILURE MILEAGE WAS LESS THAN 20,000.

NHTSA ODI #10616811

Official recalls

4

17V821000 · Power Train:automatic Transmission:lever And Linkage:column Shift

Dec 20, 2017

Chrysler (FCA US LLC) is recalling certain 2016-2017 Ram 3500 Cab Chassis with a Gross Vehicle Weight Rating (GVWR) of less than 10,000 lbs, 2011-2017 Ram 3500, 4500 and 5500 Cab Chassis vehicles, 2009-2017 Ram 1500 and 2010-2017 Ram 2500 and 3500 pickup trucks, all equipped with a column shifter. Pushing the brake pedal for prolonged periods when the vehicle is running and in PARK may cause the Brake Transmission Shift Interlock (BTSI) pin to stick in the open position. With the pin in the open position, the transmission can be shifted out of PARK into any gear without pushing the brake pedal or having the key in the ignition.

Consequence & remedy

Consequence: Being able to shift the transmission without pushing the brake pedal and/or without a key in the ignition can increase the risk of an unintended vehicle rollaway that may result in personal injury or a crash.

Remedy: Chrysler will notify owners, and dealers will update the vehicle software, inspect the BTSI, and, as necessary, replace it, free of charge. The recall began February 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is T79.

15V459000 · Air Bags:frontal

Jul 22, 2015

Chrysler (FCA US LLC) is recalling certain model year 2012-2014 Ram 1500, 2500, 3500, 4500, and 5500 trucks manufactured January 18, 2011, to October 7, 2014, and equipped with the Electronic Vehicle Information Center option. The affected vehicles have a steering wheel wiring harness that may rub against the driver air bag module retainer spring.

Consequence & remedy

Consequence: This abrasion may result in an electrical short that could cause driver's frontal air bag to unexpectedly deploy. Inadvertent deployment of the air bag may increase the risk of injury and the possibility of a vehicle crash.

Remedy: Chrysler will notify owners, and dealers will inspect, repair as necessary, and secure the steering wheel wiring harness. Additionally, protective caps will be added to the air bag retainer spring ends. These repairs will be done free of charge. The recall began on September 18, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is R36.

14V635000 · Engine And Engine Cooling:engine:diesel; Fuel System, Diesel

Oct 8, 2014

Chrysler Group LLC (Chrysler) is recalling certain model year 2010-2014 Ram 2500, 3500, 4500, and 5500 trucks manufactured March 27, 2009, to September 5, 2013. In the affected vehicles, the electrical connectors of the diesel fuel heater may overheat.

Consequence & remedy

Consequence: If the connectors overheat, the fuel heater may leak fuel, increasing the risk of a fire.

Remedy: Chrysler will notify owners, and dealers will replace the harness side connector with a silver plated beryllium copper terminal service kit, and inspect the fuel heater for leaks, replacing it as necessary, free of charge. Chrysler issued interim notification to owners on December 8, 2014. The recall began on April 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P65.

Additional source detail variants (2)

Fuel System, Diesel

Chrysler Group LLC (Chrysler) is recalling certain model year 2010-2014 Ram 2500, 3500, 4500, and 5500 trucks manufactured March 27, 2009, to September 5, 2013. In the affected vehicles, the electrical connectors of the diesel fuel heater may overheat.

Consequence: If the connectors overheat, the fuel heater may leak fuel, increasing the risk of a fire.

Remedy: Chrysler will notify owners, and dealers will replace the harness side connector with a silver plated beryllium copper terminal service kit, and inspect the fuel heater for leaks, replacing it as necessary, free of charge. Chrysler issued interim notification to owners on December 8, 2014. The recall began on April 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P65.

Engine And Engine Cooling:engine:diesel

Chrysler Group LLC (Chrysler) is recalling certain model year 2010-2014 Ram 2500, 3500, 4500, and 5500 trucks manufactured March 27, 2009, to September 5, 2013. In the affected vehicles, the electrical connectors of the diesel fuel heater may overheat.

Consequence: If the connectors overheat, the fuel heater may leak fuel, increasing the risk of a fire.

Remedy: Chrysler will notify owners, and dealers will replace the harness side connector with a silver plated beryllium copper terminal service kit, and inspect the fuel heater for leaks, replacing it as necessary, free of charge. Chrysler issued interim notification to owners on December 8, 2014. The recall began on April 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P65.

13V529000 · Steering:linkages:tie Rod Assembly

Nov 6, 2013

Chrysler Group LLC (Chrysler) is recalling certain model year 2008-2012 RAM 2500 4X4 and 3500 4X4 trucks, 2008-2012 Dodge RAM 3500 4x2 Cab Chassis, and model year 2008 Dodge RAM 1500 Mega Cab 4x4. The left tie rod assembly may break.

Consequence & remedy

Consequence: A failure of the tie rod assembly may result in a loss of steering control, increasing the risk of a crash.

Remedy: Chrysler notified owners on January 16, 2014 that dealers would inspect vehicles and replace the steering linkage assembly, if necessary. On or about February 27, 2014, Chrysler ceased its recall remedy program due to parts quality concerns, and then re-initiated it on or about April 14, 2014. In July 2015, and under a consent order with NHTSA, the company agreed to offer owners three options for remedying their vehicles: perform the original remedy, offer to repurchase the vehicle at the fair market value plus 10%, or offer an additional incentive offer towards the purchase of a new Dodge, Jeep, Chrysler, or Fiat vehicle. Chrysler will notify owners of the new recall options in a letter expected to be mailed on August 31, 2015. Owners may contact Chrysler at 1-800-247-9753. Chrysler's recall campaign number is N49.

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.