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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

Fuel/propulsion System complaints

24 reports
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Mileage unknown · Jul 7, 2015
EngineFuel/propulsion System

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 14V635000 (FUEL SYSTEM); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN W…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 14V635000 (FUEL SYSTEM); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS UNKNOWN. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10732445

35,000 miles · May 21, 2015
Electrical SystemFuel/propulsion SystemVehicle Speed Control

I WAS GIVEN NOTICE OF RECALL ON DECEMBER 9TH 2014.RECEIVED ANOTHER NOTICE THIS MONTH ON THE FUEL HEATER. I HAVE BEEN TO THE DEALER SEVERAL TIMES AND THEY DO NOT HAVE THE PART.IT HAS BEEN OVER 6 MONTHS SINCE THE FIRST RECALL NOTICE THEN THEY SEND ANOTHER ONE AND STILL DO NOT HAVE THE PARTS.WHAT GOOD IS A RECALL OF A DANGEROUS SIT…

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I WAS GIVEN NOTICE OF RECALL ON DECEMBER 9TH 2014.RECEIVED ANOTHER NOTICE THIS MONTH ON THE FUEL HEATER. I HAVE BEEN TO THE DEALER SEVERAL TIMES AND THEY DO NOT HAVE THE PART.IT HAS BEEN OVER 6 MONTHS SINCE THE FIRST RECALL NOTICE THEN THEY SEND ANOTHER ONE AND STILL DO NOT HAVE THE PARTS.WHAT GOOD IS A RECALL OF A DANGEROUS SITUATION WITH THE VEHICLE AND THE MANUFACTURE DOES NOT SUPPLY THE PARTS! I HAVE ALSO HAD A PROBLEM AND MADE A REPORT BEFORE ABOUT THE TRUCK NOT STOPPING OR SLOWING DOWN.THE ELECTRONIC THROTTLE STICKS AND THIS IS VERY DANGEROUS.

NHTSA ODI #10717828

Mileage unknown · May 2, 2015
Fuel/propulsion System

IN DECEMBER CHRYSLER MAILED AN "IMPORTANT SAFETY RECALL" P65/NHTSA 14V-635. WHEN I CALLED MY LOCAL DODGE RAM DEALERSHIP TO SCHEDULE AN APPOINTMENT TO CORRECT THE SAFETY ISSUE, THEY TOLD ME THE PARTS WERE NOT AVAILABLE. FOR MORE INFORMATION I WOULD HAVE TO CALL CHRYSLER. ON 12/26/14 I WAS TOLD BY CHRYSLER THE PARTS WOULD BE A…

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IN DECEMBER CHRYSLER MAILED AN "IMPORTANT SAFETY RECALL" P65/NHTSA 14V-635. WHEN I CALLED MY LOCAL DODGE RAM DEALERSHIP TO SCHEDULE AN APPOINTMENT TO CORRECT THE SAFETY ISSUE, THEY TOLD ME THE PARTS WERE NOT AVAILABLE. FOR MORE INFORMATION I WOULD HAVE TO CALL CHRYSLER. ON 12/26/14 I WAS TOLD BY CHRYSLER THE PARTS WOULD BE AVAILABLE APRIL 2015. ON MAY 1ST, I RECEIVED A SUBSEQUENT "IMPORTANT SAFETY RECALL" P65/NHTSA 14V-635 FROM CHRYSLER, SO I CALLED MY LOCAL DOGE RAM DEALERSHIP TO SCHEDULE THE APPOINTMENT. I WAS TOLD AGAIN THE PARTS ARE NOT AVAILABLE AND I WOULD HAVE TO CALL CHRYSLER TO GET MORE INFORMATION. I DO NOT BELIEVE CHRYSLER IS TAKING THIS IMPORTANT SAFETY RECALL SERIOUSLY. THAT BEING SAID, ON THE SAFETY NOTICE IT SAYS "A LEAKING DIESEL FUEL FILTER/HEATER COULD CAUSE UNDER HOODSMOKE AND/OR AN ENGINE COMPARTMENT FIRE". *TR

NHTSA ODI #10714188

Mileage unknown · May 1, 2015
EngineFuel/propulsion System

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL); HOWEVER, THE PART NEEDED TO REPAIR THE VEHICLE WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. T…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL); HOWEVER, THE PART NEEDED TO REPAIR THE VEHICLE WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10714003

Mileage unknown · Apr 23, 2015
EngineFuel/propulsion System

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER:14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTUR…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER:14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10712476

Mileage unknown · Mar 27, 2015
Fuel/propulsion System

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A NOTICE FOR NHTSA CAMPAIGN NUMBER: 14V635000 (FUEL SYSTEM) HOWEVER THE PART TO DO THE REPAIR WAS NOT AVAILABLE. THE CONTACT FELT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED A NOTICE FOR NHTSA CAMPAIGN NUMBER: 14V635000 (FUEL SYSTEM) HOWEVER THE PART TO DO THE REPAIR WAS NOT AVAILABLE. THE CONTACT FELT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10702151

35,000 miles · Mar 17, 2015
Fuel/propulsion SystemVehicle Speed Control

I WAS DRIVING AT 60 MPH WHEN I HAD TO COME TO A STOP BECAUSE OF TRAFFIC AND THE THROTTLE APPARENTLY DID NOT DISENGAGE CAUSING ME TO SLAM ON THE BRAKES HARD. ONLY AFTER A FEW SECONDS WHEN I STOPPED DID THE VEHICLE DOWNSHIFT AND RETURNED TO IDLE FUNCTION.THIS HAS HAPPENED BEFORE AND SINCE THIS INCIDENT.THE VEHICLE HAS ALSO IDLED H…

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I WAS DRIVING AT 60 MPH WHEN I HAD TO COME TO A STOP BECAUSE OF TRAFFIC AND THE THROTTLE APPARENTLY DID NOT DISENGAGE CAUSING ME TO SLAM ON THE BRAKES HARD. ONLY AFTER A FEW SECONDS WHEN I STOPPED DID THE VEHICLE DOWNSHIFT AND RETURNED TO IDLE FUNCTION.THIS HAS HAPPENED BEFORE AND SINCE THIS INCIDENT.THE VEHICLE HAS ALSO IDLED HIGH AT TIMES AND WILL NOT SLOW DOWN WHEN REMOVING PRESSURE TO THE FUEL PEDAL.IT IS AS IF THE THROTTLE ASSEMBLY STICKS WHICH IS AN APPARENT ELECTRICAL MALFUNCTION.THIS IS AND HAS BECOME A SERIOUS SAFETY ISSUE WITH THIS VEHICLE. I HAVE MADE A COMPLAINT BEFORE AND CONTACTED DODGE RAM ABOUT THIS WITH NO SATISFACTION.I WILL BE DRAFTING A REGISTERED LETTER TO NHTS BOARD AND DODGE RAM RELEASING LIABILITY FROM THIS ISSUE UNTIL IT IS RESOLVED. I ALSO HAVE A RECALL ABOUT THE FUEL FILTER HEATER FROM DECEMBER AND STILL THE MANUFACTURE HAS NOT PROVIDED THE PARTS SO AS TO FIX THIS PROBLEM WHICH CAN CAUSE FIRES IN THE ENGINE COMPARTMENT. *TR

NHTSA ODI #10694822

Mileage unknown · Mar 5, 2015
Electrical SystemEngineFuel/propulsion System

RECALL P65, RECEIVED NOTICE IN OCT. 2014, CONTACTED DODGE DAY LETTER WAS RECEIVED. ASKED IF VEHICLE WAS SAFE TO DRIVE AT WHICH TIME THEY STATED "WE CAN NOT TELL YOU IF YOUR VEHICLE IS SAFE OR NOT", ASKED TO SCHEDULE SERVICE AND INFORMED NO PARTS AT THIS TIME...FAST FORWARD 5 MONTHS..ON THE DODGE WEBSITE IT CLEARLY STATES MY VEHI…

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RECALL P65, RECEIVED NOTICE IN OCT. 2014, CONTACTED DODGE DAY LETTER WAS RECEIVED. ASKED IF VEHICLE WAS SAFE TO DRIVE AT WHICH TIME THEY STATED "WE CAN NOT TELL YOU IF YOUR VEHICLE IS SAFE OR NOT", ASKED TO SCHEDULE SERVICE AND INFORMED NO PARTS AT THIS TIME...FAST FORWARD 5 MONTHS..ON THE DODGE WEBSITE IT CLEARLY STATES MY VEHICLE MUST BE INSPECTED FOR FUEL LEAK ON THIS RECALL...SO I CALL DODGE AND ONCE AGAIN I'M TOLD NO PARTS YET, THEY DON'T EVEN KNOW WHAT PARTS ARE NEEDED, SO I ONCE AGAIN ASKED IF THE VEHICLE WAS SAFE TO DRIVE AND THAT I WON'T HAVE AN ENGINE FIRE AND RECEIVED THE SAME RESPONSE AS LAST TIME...I ASKED IF AT LEAST MY VEHICLE CAN BE INSPECTED TO SEE IF IT HAS A FUEL LEAK SO I KNOW IF IT'S SAFE TO DRIVE AND THE RESPONSE WAS NO, SINCE NO PARTS, "ITS A LIABILITY ISSUE IF THEY INSPECT AND DON'T HAVE PARTS".....NOR WILL THEY PROVIDE A RENTAL AND GUESS WHAT IF IT CATCHES FIRE THEY WON'T PAY FOR IT...I DIDN'T SPEND OVER 50K TO HAVE A LAWN DECORATION, I BOUGHT THE VEHICLE TO DRIVE! *TR

NHTSA ODI #10692279

Mileage unknown · Mar 3, 2015
EngineFuel/propulsion System

TL*THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL) HOWEVER, THE PART NEEDED TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANU…

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TL*THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 14V635000 (ENGINE AND ENGINE COOLING, FUEL SYSTEM, DIESEL) HOWEVER, THE PART NEEDED TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10691807

17,000 miles · Feb 26, 2015
Fuel/propulsion System

I RECEIVED A RECALL NOTICE IN EARLY DECEMBER 2014 STATING THAT THERE IS AN ISSUE WITH A DIESEL FUEL HEATER ELECTRICAL CONNECTOR ON MY TRUCK THAT MAY LEAD TO O-RING FAILURE AND POTENTIAL FIRE. I HAVE CONTACTED THE DEALER TWICE AND AS OF LAST CONTACT THEY HAVE NO IDEA WHEN A "FIX" MIGHT BE AVAILABLE. SINCE POSSIBLE FIRE IS THE RIS…

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I RECEIVED A RECALL NOTICE IN EARLY DECEMBER 2014 STATING THAT THERE IS AN ISSUE WITH A DIESEL FUEL HEATER ELECTRICAL CONNECTOR ON MY TRUCK THAT MAY LEAD TO O-RING FAILURE AND POTENTIAL FIRE. I HAVE CONTACTED THE DEALER TWICE AND AS OF LAST CONTACT THEY HAVE NO IDEA WHEN A "FIX" MIGHT BE AVAILABLE. SINCE POSSIBLE FIRE IS THE RISK AND THE DEALER, INITIALLY, DID NOT EVEN KNOW THEY WAS/IS A RECALL, I AM CONCERNED. THE DEALER SUGGESTED THAT I CONTACT CHRYSLER SINCE THE DEALER KNEW NOTHING ABOUT IT. SINCE I WAS TALKING WITH THE CHRYSLER DEALER THAT I PURCHASED THE VEHICLE FROM, I ASSUMED I WAS TALKING WITH CHRYSLER. IT HAS BEEN OVER A MONTH SINCE MY LAST CONTACT WITH THEM AND I HAVE HEARD NOTHING TO DATE. CAN YOU HELP OR PROVIDE ADDITIONAL INFORMATION, PLEASE.

NHTSA ODI #10690825

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.