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2011 Dodge RAM 1500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2011 Dodge RAM 1500 do not stand out strongly from the model-year median of 520.

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When problems were reported

Mileage at the reported incident

491 reports with mileage · 197 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.

  • Electrical System. Review the 214 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 175 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 151 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

28 crash reports7 fire reports17 injury reports

Engine complaints

151 reports
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93,000 miles · Nov 3, 2016
Electrical SystemEngine

TL* THE CONTACT OWNS A 2011 RAM 1500. WHILE PARKED, THE VEHICLE CAUGHT FIRE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THERE WERE NO INJURIES. THE VEHICLE WAS TOWED BY THE INSURANCE COMPANY. THE MANUFACTURER WAS NOTIFIED. THE VEHICLE WAS NOT DIAGNOSED. THE FAILURE MILEAGE WAS APPROXIMATELY 93,000.

NHTSA ODI #10924123

62,000 miles · Oct 7, 2016
Electrical SystemEngineFuel System, Gasoline

TL* THE CONTACT OWNS A 2011 RAM 1500. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED STALLING AND FAILURES WITH STARTING. THE FAILURES OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TIPM NEEDED TO BE UPDATED. UPDATE INSTALLED AND HAS NOT CORRECTED PROBLEM. MOST LIKELY HAS FAILED …

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TL* THE CONTACT OWNS A 2011 RAM 1500. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED STALLING AND FAILURES WITH STARTING. THE FAILURES OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TIPM NEEDED TO BE UPDATED. UPDATE INSTALLED AND HAS NOT CORRECTED PROBLEM. MOST LIKELY HAS FAILED AND NEEDS TO BE REPLACED. THE FAILURE MILEAGE WAS APPROXIMATELY 62,000.. ..UPDATED 11/01/16 *BF THE DEALER INFORMED THE CONSUMER THE FUEL PUMP RELAY WAS FAULTY. THE DEALER FIXED THE PROBLEM BY SUPPLYING POWER TO THE FUEL PUMP, USING AN ALTERNATIVE SOURCE. UPDATED 11/03/16.*JB

NHTSA ODI #10914518

106,000 miles · Sep 11, 2016
Electrical SystemEngineExterior Lighting

THE TIPM OUR DODGE TRUCK IS FAULTY. IT HAS ISSUES STARTING, THE LIGHTS WILL STOP WORKING, THE LIGHTS ON DASH COME ON, THERE IS AN ISSUE WITH THE OIL JUST DISAPPEARING, THE FUEL PUMP RELAY. I HAVE DONE EXTENSIVE RESEARCH ONLINE AND SAW THAT SEVERAL VEHICLES UNDER CHRYSLER AND DODGE HAVE HAD THIS ISSUE WITH FAULTY TIPM AND THERE…

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THE TIPM OUR DODGE TRUCK IS FAULTY. IT HAS ISSUES STARTING, THE LIGHTS WILL STOP WORKING, THE LIGHTS ON DASH COME ON, THERE IS AN ISSUE WITH THE OIL JUST DISAPPEARING, THE FUEL PUMP RELAY. I HAVE DONE EXTENSIVE RESEARCH ONLINE AND SAW THAT SEVERAL VEHICLES UNDER CHRYSLER AND DODGE HAVE HAD THIS ISSUE WITH FAULTY TIPM AND THERE WAS EVEN A CLASS ACTION LAWSUIT,BUT THE NHTSA FELT THERE WASN'T ENOUGH OF AN ISSUE WITH THE DODGE RAMS TO PUSH FOR A RECALL. I BELIEVE THAT THIS NEEDS TO BE PUSHED FOR A RECALL. THIS ISSUE IS OCCURRING IN A LOT OF RAMS AND THEY ARE PASSED THE WARRANTY AND WHEN YOU PURCHASE A NEW WARRANTY THIS ISSUE IS NOT COVERED. ALL EXPENSES ARE PAID OUT OF POCKET. THIS IS AN ISSUE THAT CHRYSLER AND DODGE HAVE BEEN AWARE OF FOR YEARS. OUR DODGE RAM HAS BEEN AT THE SHOP SEVERAL TIMES WITH ISSUES AND THEY DID NOT TELL US ONCE ABOUT THE TIPM ISSUES. WE HAD TO FIGURE IT OUT OURSELVES WITH INTERNET RESEARCH. A CUSTOMER SHOULD NOT BE PAYING CLOSE TO OR OVER $2,000 OUT OF POCKET TO FIX AN ISSUE THAT THE MANUFACTURING COMPANY NEW WAS A DEFECT OR FAULTY. SEVERAL MILLION DODGE RAM OWNERS HAVE HAD THIS ISSUE OVER THE YEARS AND HAVE REPORTED IT ACCORDING TO THE PUBLICATION OF THE NHTSA. I DON'T UNDERSTAND WHY CUSTOMERS ARE BEING PUNISHED TO PROTECT THE MANUFACTURER'S MISTAKES. OUR DODGE HAS SPENT MORE TIME IN THE SHOP IN THE PAST YEAR THEN WITH US. WE HAVE ONLY OWNED THE VEHICLE FOR TWO YEARS.

NHTSA ODI #10905619

73,000 miles · Sep 10, 2016
EngineFuel/propulsion System

TRUCK HAS INTERMITTENTLY STARTED OFF AN ON THE ENTIRE TIME I'VE OWNED IT (10 MONTHS). TRUCK DIED WHILE ON THE HIGHWAY AND HAD TO COAST TO A STOP TRUCK NOW WONT START AT ALL I'VE TAKEN IT TO THE DEALERSHIP MULTIPLE TIMES AND THEY'VE REPLACED THE FUEL PUMP, WIRING HARNESS. SAME SYMPTOMS APPEAR AFTER BOTH "REPAIRS".

NHTSA ODI #10905485

100,000 miles · Sep 6, 2016
Engine

I HAVE A DODGE RAM 1500. A COUPLE OF DAYS AGO I WAS IN RUSH HOUR TRAFFIC DOING ABOUT 60 MPH WHEN THE TIMING CHAIN BROKE AND THE TRUCK DIED! I WAS LUCKY TO BE ABLE TO COAST ACROSS 4 LANES OF TRAFFIC AND ONTO THE SHOULDER. AFTER DOING A QUICK SEARCH I FOUND THAT THERE HAS BEEN A RECALL ON THE SAME ENGINE IN THE SAME YEAR BUT ONLY…

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I HAVE A DODGE RAM 1500. A COUPLE OF DAYS AGO I WAS IN RUSH HOUR TRAFFIC DOING ABOUT 60 MPH WHEN THE TIMING CHAIN BROKE AND THE TRUCK DIED! I WAS LUCKY TO BE ABLE TO COAST ACROSS 4 LANES OF TRAFFIC AND ONTO THE SHOULDER. AFTER DOING A QUICK SEARCH I FOUND THAT THERE HAS BEEN A RECALL ON THE SAME ENGINE IN THE SAME YEAR BUT ONLY IF ITS IN A CHARGER, CHALLENGER OR A 300(THE RECALL IS CALLED CUSTOMER SATISFACTION NOTIFICATION P01, SEE ATTACHED) . THE FAILURE I EXPERIENCED IS THE EXACT SAME PROBLEM AS WHAT HAPPENS IN THE CARS. I WAS DOING HIGHWAY SPEED IN FUEL SAVING MODE AND WHEN THE ENGINE AUTOMATICALLY KICKS INTO 8 CYLINDER MODE THE TIMING CHAIN BRAKES. MY VEHICLE IS OUT OF WARRANTY AND THE DEALER TELLS ME THE ENGINE IS NOT COVERED BY THE RECALL BECAUSE ITS IN A TRUCK NOT A CAR. WHEN THE CHAIN BREAKS IN ONE OF THESE ENGINES IT COMPLETELY DESTROYS THE PISTONS AND VALVES. I NEED NEW ENGINE! THIS IS VERY UNSAFE FLAW IN THIS ENGINE AND THE RECALL SHOULD APPLY TO ALL ENGINES OF THIS MODEL INCLUDING THE ONES IN RAM TRUCKS. I AM A VERY EXPERIENCED DRIVER IM CERTAIN THAT IF THIS HAD HAPPENED TO ANYONE WITH LESS EXPERIENCE THIS WOULD HAVE CAUSED A VERY SERIOUS ACCIDENT.

NHTSA ODI #10904239

46,000 miles · Aug 29, 2016
Engine

LIFTER FAILURE AND CYLINDER MISFIRE. LOUD ENGINE TICK WHICH IS CAUSED FROM FAILING LIFTER AND SPRING TO CAUSE SEVERE DAMAGE TO THE CAM. COMMON PROBLEM WITH THE HEMI 5.7L. TRUCK HAS LESS THAN 47000 MILES AND JUST OUT OF WARRANTY. REPAIRS ARE COSTING $3800.00. TRUCK IS UNDRIVABLE FOR FEAR OF ENGINE PISTON BREAKING CYLINDER WA…

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LIFTER FAILURE AND CYLINDER MISFIRE. LOUD ENGINE TICK WHICH IS CAUSED FROM FAILING LIFTER AND SPRING TO CAUSE SEVERE DAMAGE TO THE CAM. COMMON PROBLEM WITH THE HEMI 5.7L. TRUCK HAS LESS THAN 47000 MILES AND JUST OUT OF WARRANTY. REPAIRS ARE COSTING $3800.00. TRUCK IS UNDRIVABLE FOR FEAR OF ENGINE PISTON BREAKING CYLINDER WALL.

NHTSA ODI #10899191

129,500 miles · Jun 19, 2016
Engine

TRUCK STARTED MAKING A NOISE FROM THE ENGINE SOUNDED LIKE A BEARING IN A PULLEY BROUGHT IT TO A REPAIR SHOP THERE DIAGNOSE WAS A VALVE SEAT GOING BAD AND IT IS COMMON IN 5.7 HEM I ENGINE WHICH IS WHAT I HAVE. HOW IS CHRYSLER HELPING TRUCK OWNERS REPAIR THIS FINANCIALLY SINCE IT IS A KNOW PROBLEM THAT WAS NOT TOLD TO RAM OWNERS W…

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TRUCK STARTED MAKING A NOISE FROM THE ENGINE SOUNDED LIKE A BEARING IN A PULLEY BROUGHT IT TO A REPAIR SHOP THERE DIAGNOSE WAS A VALVE SEAT GOING BAD AND IT IS COMMON IN 5.7 HEM I ENGINE WHICH IS WHAT I HAVE. HOW IS CHRYSLER HELPING TRUCK OWNERS REPAIR THIS FINANCIALLY SINCE IT IS A KNOW PROBLEM THAT WAS NOT TOLD TO RAM OWNERS WHEN THEY BUY THESE VEHICLES. ONLY HAS 129,000 MILES WITH A REPAIR COST 4,500.00 -5000.00 DOLLARS . THIS IS THE FIRST RAM I'VE EVER OWNED AND I REALLY DO EXPECT DODGE/ CHRYSLER TO HELP ME OUT WITH THIS ISSUE FINANCIALLY.THIS STARTED LAST WEEK WHEN I FIRST STARTED THE TRUCK IN THE MORNING AND IN 1 WEEK THE TICK TACK SOUND WENT FROM EVERY 2-6 SECONDS TO EVERY 2-3 SECONDS AND INCREASES WHEN IT WARMS UP.

NHTSA ODI #10875097

72,000 miles · Mar 24, 2016
EngineService BrakesSteering

WHILE DRIVING ON A 2 LANE ROAD AT 50 MPH APPROX SPEED, THE ENGINE SHUT OFF. POWER STEERING AND POWER BRAKES BECAME EXTREMELY STIFF, BUT I WAS ABLE TO MUSCLE TRUCK TO SHOULDER. AFTER STOPPING, I PUT IT IN PARK, THE KEY WAS STILL IN ON POSITION; TURNED KEY AND ENGINE STARTED. I HAVE OWNED THIS TRUCK FOR 45 DAYS AND THIS HAS HAP…

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WHILE DRIVING ON A 2 LANE ROAD AT 50 MPH APPROX SPEED, THE ENGINE SHUT OFF. POWER STEERING AND POWER BRAKES BECAME EXTREMELY STIFF, BUT I WAS ABLE TO MUSCLE TRUCK TO SHOULDER. AFTER STOPPING, I PUT IT IN PARK, THE KEY WAS STILL IN ON POSITION; TURNED KEY AND ENGINE STARTED. I HAVE OWNED THIS TRUCK FOR 45 DAYS AND THIS HAS HAPPENED TWICE AT TOTALLY RANDOM TIMES. I AM VERY FORTUNATE I WAS ON A ROAD WITHOUT MUCH TRAFFIC. HAD I BEEN IN A STEERING, PASSING OR OTHER SITUATION, I COULD HAVE BEEN IN A SERIOUS ACCIDENT I LEARNED FROM INTERNET THAT THIS IS A FREQUENT COMPLAINT OF RAM OWNERS AND OTHER CHRYSLER PRODUCT VEHICLE OWNERS, AND THAT A RECALL HAS BEEN ISSUED FOR CERTAIN CHRYSLER VEHICLES ALREADY. THE FAULTY PART WAS THE TIPM MODULE. THERE IS ALSO A CLASS ACTION LAWSUIT IN PROCESS INVOLVING OTHER CHRYSLER VEHICLES NOT YET RECALLED, INCLUDING THE MODEL I OWN. I TOOK THE VEHICLE INTO THE DEALER, AND THEY COULD NOT POSITIVELY IDENTIFY THE CAUSE. THEY WOULD NOT AGREE TO REPLACE TIPM EVEN THOUGH I'M UNDER WARRANTY, BUT INSTEAD WANTED TO DO SOFTWARE UPDATES ON SEVERAL "MODULES" AND SAID IF IT HAPPENED AGAIN, I SHOULD BRING IT BACK. TOTALLY UNACCEPTABLE!!! I CALLED RAM CUSTOMER CARE AND EXPLAINED THAT THE VEHICLE IS DANGEROUS AND THAT I CANNOT ACCEPT A SOFTWARE UPDATE IN THE HOPE IT FIXES IT GIVEN THE TIPM HISTORY OF THESE VEHICLES. THEY ADVISED THAT THERE WERE NO DIAGNOSTIC "CODES" PRESENT, SO THEY WOULD NOT REPLACE THE TIPM. THEY THEN ADMITTED THAT A FAULTY TIPM WOULD NOT PRODUCE ANY CODES, BUT AGAIN SAID THEY NEEDED TO RULE OUT A SOFTWARE ISSUE FIRST BY TRIAL AND ERROR AND REFUSED TO REPLACE THE TIPM EVEN THOUGH THERE WAS NO WAY TO DIAGNOSE IF IT WAS FAULTY. MY SON IS DRIVING THIS TRUCK TO COLLEGE, AND I AM NOT ABOUT TO RISK HIM BEING KILLED IN THIS VEHICLE SO I WAS FORCED TO PAY $1,350 FOR A NEW TIPM. RAM NEEDS TO RECALL THESE IMMEDIATELY.

NHTSA ODI #10851512

60,000 miles · Nov 23, 2015
Engine

TL* THE CONTACT OWNS A 2011 DODGE RAM 1500. WHILE THE VEHICLE WAS BEING WARMED UP, AN ABNORMAL NOISE COULD BE HEARD FROM THE ENGINE. THE FAILURE WAS PERSISTENT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 60,000.

NHTSA ODI #10806249

Mileage unknown · Nov 10, 2015
Electrical SystemEnginePower TrainCrash

IN A NUTSHELL,, MY TRUCK HAD ABOUT,,,14K MIKES ON IT. PURCHASED NEW. IT TOOK OFF IN EXESS OF 100MPH. COULDN'T STOP IT!!!!!!! ALMOST KILLED MY SON AND I!! HAVE BEEN FIGHTING, EVER SINCE TO GET CHRYSLER TO REPLACE THE MOTOR,, AS IT SOUNDS EVERY BEARING IN THE MOTOR,, WHEN I FINALLY PUT TRANSMISSION IN NEAUTRAL TO STOP THE TRUCK. T…

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IN A NUTSHELL,, MY TRUCK HAD ABOUT,,,14K MIKES ON IT. PURCHASED NEW. IT TOOK OFF IN EXESS OF 100MPH. COULDN'T STOP IT!!!!!!! ALMOST KILLED MY SON AND I!! HAVE BEEN FIGHTING, EVER SINCE TO GET CHRYSLER TO REPLACE THE MOTOR,, AS IT SOUNDS EVERY BEARING IN THE MOTOR,, WHEN I FINALLY PUT TRANSMISSION IN NEAUTRAL TO STOP THE TRUCK. TO DATE, THE TRUCK HAS A REARMAIN LEAK, BECAUSE OF INSTEAD OF REPLACING THE MOTOR. CHRYSLER, TRIED TO TAKE THE CHEAPER WAY OUT AND ONLY REPLACE A PART AT A TIME. IN DOING SO THIS,COST THEM WAY MORE $. MOTOR NO LONGER HAS A BEARING NOISE. BUT IT DOES HAVE A REARMAIN LEAK. THAT THEY HAVE TRIED TO REPAIR 3XS SO FAR!! NOW,,,,, I'M STILL WAITING TO SEE IF THEY WILL REPLACE THE MOTOR, OR TRY AGAIN??? LAST I KNEW THE GOSLDEN RULE WAS 3 XS AND URE OUT!!!! MY PATIENCE, IS GONE. THE TRUCK, HAS SPENT MOST OF ITS LIFE IN A DEALERS GARAGE. AND MOST OF ITS 40K MILES ARE FROM THE DEALERS TECH. I HAVE ALL DOCUMENTATION TO PROVE EVERYTHING I SAY. ALL FROM THE DAY IT TOOK OFF ON ME. THE REAL PROBLEM IS..... WHY DID IT TAKE OFF? AND THE ANSWER TO THAT. I FIGURED OUT. WHO WANTS THAT INFO? CAUSE I HAVE FIGURED THAT OUT. IT TOOK 3 YRS. TO FIGURE OUT. IS ALL I WANT IS A NEW VEHICLE, AS I NEVER GOT TO ENJOY THAT. JUST COST ME ALOT OF TIME, AND $.

NHTSA ODI #10789457

Official recalls

4

18V160000 · Fuel System, Gasoline:storage:tank Assembly:mounting

Mar 8, 2018

Chrysler (FCA US LLC) is recalling certain 2009-2012 Dodge Ram 1500 trucks currently, or ever registered, in Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. Exposure to environmental conditions such as water mixed with road salt may cause the front fuel tank strap frame "T-Slot" bracket to corrode, possibly causing the fuel tank to drop and make contact with the ground.

Consequence & remedy

Consequence: If the fuel tank were to drop and contact the ground, a fuel leak may result. Additionally, in the event of a crash, the fuel tank may not remain secured to the vehicle, possibly causing a fuel leak. A fuel leak in the presence in an ignition source, can increase the risk of a fire.

Remedy: Chrysler will notify owners and dealers will bolt a bracket reinforcement to the frame, free of charge. The recall began May 2, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U04.

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.

13V038000 · Power Train:driveline:differential Unit

Feb 6, 2013

Chrysler is recalling certain model year 2009-2012 Ram 1500 trucks manufactured from February 27, 2008, through June 30, 2009, and from December 1, 2009, through October 20, 2011; model year 2009-2011 Dodge Dakota trucks manufactured from February 27, 2007, through June 30, 2009, and from December 1, 2009, through September 30, 2011; model year 2009 Chrysler Aspen trucks manufactured from January 3, 2008, through December 18, 2008; and model year 2009 Dodge Durango trucks manufactured from January 3, 2008, through December 18, 2008. The rear axle pinion nut may loosen due to an undersized pinion spline that can allow relative motion between the nut and companion flange.

Consequence & remedy

Consequence: If the rear axle pinion nut loosens, the axle can lock up and cause a loss of vehicle control and/or a vehicle crash with little warning.

Remedy: On November 7, 2013 Chrysler notified owners that dealers would install a pinion nut retainer, free of charge. 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 N08.

10V656000 · Suspension:rear:axle:spindle

Dec 24, 2010

CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2011 RAM 1500 TRUCKS MANUFACTURED FROM SEPTEMBER 2009 THROUGH DECEMBER 2010. SOME VEHICLES MAY HAVE EXPERIENCE A NOISE (GROWL, GRIND) COMING FROM THE REAR AXLE BEARING WHICH COULD EVENTUALLY SEIZE.

Consequence & remedy

Consequence: A FAILURE OF THE BEARING COULD CAUSE THE VEHICLE TO STALL INCREASING THE RISK OF A CRASH.

Remedy: CHRYSLER WILL NOTIFY OWNERS AND WILL INSTALL AN OIL PORT INSERT INTO THE REAR AXLE FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 4, 2011. OWNERS MAY CONTACT CHRYSLER AT 1-800-853-1403.

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.