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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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Mileage unknown · Oct 2, 2015
Steering

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT DID NOT RECEIVE NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING) HOWEVER, THE PART NEEDED TO PERFORM 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 …

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. THE CONTACT DID NOT RECEIVE NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING) HOWEVER, THE PART NEEDED TO PERFORM 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 ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

NHTSA ODI #10779322

Mileage unknown · Sep 28, 2015
Steering

I HAD RECALL N49 / NHTSA 13V-529 CONDUCTED ON MY VEHICLE, NOW THE STEERING WHEEL HAS MOVED FROM THE CENTER TO THE RIGHT. MY DIRECTION OF TRAVEL IS STRAIGHT, WHEN DRIVING, BUT THE TOP OF STEERING WHEEL IS NOW POINTED TO THE 2:00 PM. I ASKED THE LARRY H MILLER RAM IN UTAH, IF I COULD DO A BUY BACK AND THEY TOLD ME "NO YOUR VEHIC…

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I HAD RECALL N49 / NHTSA 13V-529 CONDUCTED ON MY VEHICLE, NOW THE STEERING WHEEL HAS MOVED FROM THE CENTER TO THE RIGHT. MY DIRECTION OF TRAVEL IS STRAIGHT, WHEN DRIVING, BUT THE TOP OF STEERING WHEEL IS NOW POINTED TO THE 2:00 PM. I ASKED THE LARRY H MILLER RAM IN UTAH, IF I COULD DO A BUY BACK AND THEY TOLD ME "NO YOUR VEHICLE DOES NOT QUALIFY BECAUSE YOU HAD THE N49 DONE ON IT". WHEN I READ THE FCA V NHTSA IT DID NOT SAY THAT, IT SAID THEY "FCA" WILL DO A BUY BACK DUE TO THE CASE IN QUESTION.

NHTSA ODI #10778280

165,000 miles · Aug 25, 2015
Steering

TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. WHILE DRIVING AT APPROXIMATELY 70 MPH AFTER ENCOUNTERING A POTHOLE, THE FRONT END OF THE VEHICLE STARTED VIOLENTLY SHAKING WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE UPPER AND LOWER BALL JOINTS, THE FRONT SHOCK STEERING DAMPER, THE…

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TL* THE CONTACT OWNS A 2012 DODGE RAM 2500. WHILE DRIVING AT APPROXIMATELY 70 MPH AFTER ENCOUNTERING A POTHOLE, THE FRONT END OF THE VEHICLE STARTED VIOLENTLY SHAKING WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE UPPER AND LOWER BALL JOINTS, THE FRONT SHOCK STEERING DAMPER, THE TRACKING BAR, THE DIFFERENTIAL GASKET SEAL, AND A FRONT WHEEL ALIGNMENT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 165,000.

NHTSA ODI #10759149

50,222 miles · Aug 18, 2015
SteeringSuspensionWheelsCrash

I NOTICED FOR 6-8 MOS STEERING ISSUE TO THE LEFT, CALLED DEALER SAID NOTHING WRONG. AT VARIOUS TIMES A STRANGE CLUNKING CLICKING LEFT FRONT WHEEL AREA AS DECELERATING AND TURNING LEFT WEIGHT TO THE FRONT. NOW CHOPPY TIRE LEFT FRONT AS THERE ARE NO BALL JOINTS IT APPEARS TIE ROD IS BAD OR SOMETHING. WHILE PULLING INTO A TURN THE…

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I NOTICED FOR 6-8 MOS STEERING ISSUE TO THE LEFT, CALLED DEALER SAID NOTHING WRONG. AT VARIOUS TIMES A STRANGE CLUNKING CLICKING LEFT FRONT WHEEL AREA AS DECELERATING AND TURNING LEFT WEIGHT TO THE FRONT. NOW CHOPPY TIRE LEFT FRONT AS THERE ARE NO BALL JOINTS IT APPEARS TIE ROD IS BAD OR SOMETHING. WHILE PULLING INTO A TURN THE OTHER DAY AUGUST 17,2015 THE VEH PULLED HEARD THE CLANK AGAIN AND THE STEERING PULL CAUSED US TO STRIKE FIXED OBJECT. DEALER SAYS NOT AFFECTED BY RECALL, BUT WE HAVE ALL THE SAME ISSUES, AND NOTED FOR AWHILE STEERING AT INTERMITTENT TIMES PROBLEMS... WHAT CAN I DO VERY AFRAID TO DRIVE AS WE DRIVE INTERSTATE OFTEN WITH LOADS, WE NEED THE VEHICLE BUT IT SEEMS TO HAVE THE SAME ISSUE AS RECALL EVEN THOUGH OUR VIN SHOWS DIFFERENT PLANT, BUT WHAT DO WE DO JUST BE KILLED FIRST? HELP PLEASE.

NHTSA ODI #10749629

400 miles · Aug 11, 2015
SteeringUnknown Or Other

WHILE DRIVING DOWN THE HIGHWAY DOING 65 MPH, I ACCIDENTALLY BUMPED MY IGNITION WITH MY KNEE AND TURNED OFF THE VEHICLE. I DID NOTIFY DODGE OF THIS VIA THEIR WEBSITE BUT DID NOT GET A RESPONSE. I DRIVE A 2012 RAM 2500 AND NOTICED IT WAS NOT ON THE LIST FOR THE IGNITION RECALL. I BELIEVE IT SHOULD BE LOOKED INTO, I WOULD HATE FOR …

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WHILE DRIVING DOWN THE HIGHWAY DOING 65 MPH, I ACCIDENTALLY BUMPED MY IGNITION WITH MY KNEE AND TURNED OFF THE VEHICLE. I DID NOTIFY DODGE OF THIS VIA THEIR WEBSITE BUT DID NOT GET A RESPONSE. I DRIVE A 2012 RAM 2500 AND NOTICED IT WAS NOT ON THE LIST FOR THE IGNITION RECALL. I BELIEVE IT SHOULD BE LOOKED INTO, I WOULD HATE FOR THERE TO BE A FATALITY BECAUSE OF THIS OVERSIGHT.

NHTSA ODI #10747713

35,000 miles · Aug 9, 2015
SteeringSuspensionUnknown Or Other

3 DIFFERENT INSTANCES, WHILE TRAVELING FROM DIFFERENT ROAD SURFACES,CEMENT TO GRAVEL, GRAVEL TO TAR. SEEMS SMALL DIFFERENCE IN ROAD HEIGHT CAUSES TRUCK TO SHAKE VIOLENT,AND LOSE CONTROL OF STEERING ABILITY.2 OF 3 TIMES ENDED UP COMING TO A STOP IN DITCH. ONLY AFTER CROSSING BOTH LANES.THANK GOD THERE WAS NOBODY ELSE ON THE ROAD …

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3 DIFFERENT INSTANCES, WHILE TRAVELING FROM DIFFERENT ROAD SURFACES,CEMENT TO GRAVEL, GRAVEL TO TAR. SEEMS SMALL DIFFERENCE IN ROAD HEIGHT CAUSES TRUCK TO SHAKE VIOLENT,AND LOSE CONTROL OF STEERING ABILITY.2 OF 3 TIMES ENDED UP COMING TO A STOP IN DITCH. ONLY AFTER CROSSING BOTH LANES.THANK GOD THERE WAS NOBODY ELSE ON THE ROAD AT THE TIME. AFTER THE SECOND TIME IT HAPPENED I WENT ON LINE TO SEE IF ANYBODY ELSE HAD THIS HAPPEN TO THEM. WHAT I FOUND WAS THAT THEY DID AND THEY HAVE A TERM FOR IT [ THE DODGE DEATH SHAKE ]. THE AFTER MARKET EVEN MAKES PARTS TO CORRECT THE PROBLEM. FROM NEW STEERING LINKS ,STEERING BOXES.AND FRAME STIFFENERS. MAKES A PERSON WONDER,IF THEY HAVE A TERM FOR IT,AND MAKE PRODUCTS TO STOP IT.WHAT THE HELL YOU ARE DOING ABOUT IT?. AND WHY DO CONSUMERS HAVE TO PAY THOUSANDS OUT OF POCKET, TO REPAIR AN POORLY DESIGNED PRODUCT THEM SELVES? FROM LAWSUITS TO LIES AND EVERYTHING IN BETWEEN.

NHTSA ODI #10747323

48,200 miles · Aug 7, 2015
Steering

TL* THE CONTACT OWNS A 2012 RAM 2500. THE CONTACT STATED THAT AFTER THE VEHICLE WAS SERVICED UNDER NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING) AND DRIVING AT 30 MPH, THE VEHICLE VEERED TO THE LEFT AND RIGHT. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED THAT AN ALIGNMENT ADJUSTMENT WAS NEEDED. THE VEHICLE WAS …

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TL* THE CONTACT OWNS A 2012 RAM 2500. THE CONTACT STATED THAT AFTER THE VEHICLE WAS SERVICED UNDER NHTSA CAMPAIGN NUMBER: 13V529000 (STEERING) AND DRIVING AT 30 MPH, THE VEHICLE VEERED TO THE LEFT AND RIGHT. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED THAT AN ALIGNMENT ADJUSTMENT WAS NEEDED. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THE FAILURE ONLY OCCURRED AFTER THE VEHICLE WAS SERVICED UNDER THE RECALL. THE CONTACT MENTIONED THAT THE RECALL REMEDY FAILED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 48,200. THE VIN WAS NOT AVAILABLE.

NHTSA ODI #10747080

180,000 miles · Jul 28, 2015
Fuel/propulsion SystemSteeringUnknown Or Other

I WAS DRIVING DOWN I 10 TODAY GOING 70 MY TRUCK STARTED VIGOROUSLY SHACKING AND MAKING MY TRUCK RUN OFF THE ROAD IT WAS ALL I HAD TO KEEP FROM CRASHING MY FRONT END OR READ END FELT LIKE IT LOCKED UP THEN I TRIED PULLING OFF AND MY TRUCK HAD LITTLE POWER IT TOOK SEVERAL MINUTES TO GET IT RUNNING RIGHT AGAIN BUT EVERY BUMP I HIT …

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I WAS DRIVING DOWN I 10 TODAY GOING 70 MY TRUCK STARTED VIGOROUSLY SHACKING AND MAKING MY TRUCK RUN OFF THE ROAD IT WAS ALL I HAD TO KEEP FROM CRASHING MY FRONT END OR READ END FELT LIKE IT LOCKED UP THEN I TRIED PULLING OFF AND MY TRUCK HAD LITTLE POWER IT TOOK SEVERAL MINUTES TO GET IT RUNNING RIGHT AGAIN BUT EVERY BUMP I HIT THE SAME PROBLEM HAPPENED I LOOKED UNDERNEATH MY TRUCK AND COULD SEE FLUID COMING FROM MY STEERING COLUMN THIS HAPPENED LITERALLY AT 180000 MILES AT 86000 MILES MY 2012 DIESEL EXHAUST FILTER CLOGGED COMPLETELY UP AND THE DEALER SAID IT WASN'T COVERED UNDER THE 100000 MILE WARRANTY I PAID $934 TO HAVE IT REPAIRED I BELIEVE THAT I HAVE EXHAUST PROBLEM S STILL TOO.

NHTSA ODI #10744484

31,000 miles · Jul 28, 2015
Steering

WE JUST GOT OUR 2012 RAM 2500 OUT OF THE SHOP FOR THE STEERING LOCKING UP. THE FIRST TIME WE TOOK THE TRUCK INTO A DODGE DEALER, GREENWOOD, IN GILROY, CA, TOLD US THEY COULDN'T DUPLICATE THE PROBLEM AND DIDN'T OFFER ANY KIND OF RESOLUTION. THE SECOND TIME WE TOOK THE TRUCK IN,TO THE SAME DODGE DEALER IN GILROY, CA, FOR THE SAME…

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WE JUST GOT OUR 2012 RAM 2500 OUT OF THE SHOP FOR THE STEERING LOCKING UP. THE FIRST TIME WE TOOK THE TRUCK INTO A DODGE DEALER, GREENWOOD, IN GILROY, CA, TOLD US THEY COULDN'T DUPLICATE THE PROBLEM AND DIDN'T OFFER ANY KIND OF RESOLUTION. THE SECOND TIME WE TOOK THE TRUCK IN,TO THE SAME DODGE DEALER IN GILROY, CA, FOR THE SAME ISSUE, ON JULY 6TH, THEY SAID AGAIN, THEY COULD NOT DUPLICATE THE ISSUE. HOWEVER, THEY SAID THEY FOUND METAL IN THE STEERING PUMP FLUID. THEY SAID, THE WARRANTY AGREES TO PAY FOR THE PUMP, BUT THE PART WOULD NOT BE IN THAT FRIDAY OR THE FOLLOWING WEEK. WE HAD A CAMPING TRIP SCHEDULED AND ASKED IF IT WAS SAFE TO DRIVE? THEY WOULD NOT INDICATE. WE HAD MADE AN APPOINTMENT TO BRING THE TRUCK BACK IN ON JULY 19TH. ON JULY 24TH, SERVICE DEPARTMENT SAID, THE PUMP WAS AN UPGRADE AND THE WARRANTY COMPANY WOULDN'T PAY FOR THE NEW FITTING AND HOSE REQUIRED FOR THE UPGRADED PUMP. WE TOLD THEM TO GO AHEAD AND REPLACE THE PUMP WITH THE UPGRADED STEERING PUMP AND FITTING/HOSE. WE COMPLAINED TO THE DEALER'S MANAGEMENT AND THEY PAID FOR THE FITTING/HOSE AND FINALLY GAVE US OUR TRUCK ON SATURDAY, JULY 25TH. ON JULY 27TH, I HEARD ABOUT THE BUY BACK THE GOVERNMENT IS ISSUING TO FCA US LLC AND DECIDED TO SEND YOU MY PROBLEM WITH THE STEERING ON OUR 2012 DODGE RAM 2500 DIESEL 4X4.

NHTSA ODI #10744304

60,000 miles · Jul 27, 2015
Steering

WHEN ACCELERATION FROM A START AND TURING TO THE RIGHT I HEAR A GRINDING NOISE UNDER THE DASH ..AROUND THE ENGINE COMPARTMENT. HAD A RECALL ON THIS TRUCK LESS THAN A YEAR ....... DEALERSHIP INDICATED THAT THIS WOULD HELP ....... THE NOISE STILL EXISTS AND HASN'T AFFECTED THE PERFORMANCE OF THE TRUCK....... I AM MORE CONCER…

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WHEN ACCELERATION FROM A START AND TURING TO THE RIGHT I HEAR A GRINDING NOISE UNDER THE DASH ..AROUND THE ENGINE COMPARTMENT. HAD A RECALL ON THIS TRUCK LESS THAN A YEAR ....... DEALERSHIP INDICATED THAT THIS WOULD HELP ....... THE NOISE STILL EXISTS AND HASN'T AFFECTED THE PERFORMANCE OF THE TRUCK....... I AM MORE CONCERNED WITH THIS NOISE SINCE THE MEDIA NEWS ON DODGE RECALLS.......CONCERNED??

NHTSA ODI #10744061

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.