NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
486 reports20,231 miles · Aug 14, 2012
Power Train
WHEN SLOWING DOWN KEPT HEARING A HUMMING NOISE COMING FROM THE REAREND. ABOUT 10 MINUTES LATER I SLOWED DOWN TO MAKE A TURN AND BOOM THE DRIVESHAFT FALLS OUT OF THE REAREND AND THE REAR WHEELS LOCK UP. THE PINION NUT HAD COME OFF AND PINION YOLK (STILL ATTACHED TO THE DRIVESHAFT) CAME OUT OF THE REAREND. THE CHRYSLER DEALERSHI…
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WHEN SLOWING DOWN KEPT HEARING A HUMMING NOISE COMING FROM THE REAREND. ABOUT 10 MINUTES LATER I SLOWED DOWN TO MAKE A TURN AND BOOM THE DRIVESHAFT FALLS OUT OF THE REAREND AND THE REAR WHEELS LOCK UP. THE PINION NUT HAD COME OFF AND PINION YOLK (STILL ATTACHED TO THE DRIVESHAFT) CAME OUT OF THE REAREND. THE CHRYSLER DEALERSHIP DETERMINED THAT THE DRIVESHAFT WAS NOT REUSABLE AND HAD TO REPLACE THE REAREND HOUSING AND ALL IT'S INTERNAL PARTS. *TR
NHTSA ODI #10470655
62,000 miles · Aug 14, 2012
Power Train
WHILE COMING DOWN HIGHWAY 36 INTO SUSANVILLE, CALIF. OUR TRUCK STARTED MAKE A ODD NOISE, WE COULD NOT STOP TO CHECK IT OUT BECAUSE OF THE ROAD, AS WE CAME UP ON AN AREA WHERE WEE COULD LOOK AT IT GOT REALLY LOUD AND WE HEARD A THUMP AND THE REAR AXLE LOCKED UP. WE THEN SKID ACROSS THE ROAD TO A PULL OFF AREA WHAT WE FOUND WAS O…
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WHILE COMING DOWN HIGHWAY 36 INTO SUSANVILLE, CALIF. OUR TRUCK STARTED MAKE A ODD NOISE, WE COULD NOT STOP TO CHECK IT OUT BECAUSE OF THE ROAD, AS WE CAME UP ON AN AREA WHERE WEE COULD LOOK AT IT GOT REALLY LOUD AND WE HEARD A THUMP AND THE REAR AXLE LOCKED UP. WE THEN SKID ACROSS THE ROAD TO A PULL OFF AREA WHAT WE FOUND WAS OUR DRIVE SHAFT HAD COME OUT OF THE REAR AXLE. THE TRUCK HAD TO BE TOWED INTO TOWN WHERE IT STILL IS. WHEN WE CALLED ON JULY 30TH I WAS TOLD THERE WAS 45 OTHER TRUCKS WAITING FOR THE SAME PART, I CALLED AGAIN ON AUGUST 10TH AND THEY ARE NOW TELLING US MAYBE SOMETIME IN OCTOBER. THE PROBLEM HAS BEEN IDENTIFIED BY THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION. BUT I BELIEVE THE SCOPE OF THE PROBLEM IS GREATER THEN WHAT IS BEING REPORTED TO FEDERAL AGENCIES. *TR
NHTSA ODI #10470516
40,000 miles · Aug 11, 2012
Power Train
WHILE TRAVELING AT SPEED OF 15 MPH,HEARD LOUD BANG FROM REAR THE TRUCK SHOOK. VEHICLE WAS TOWED TO DEALERSHIP WHERE THEY DETERMINED THE DIFFERENTIAL BROKE DUE TO MECHANICAL FAILURE. THEY DID NOT SAY ANYTHING ABOUT TRANSMISSION. ORDERED PARTS ARE ON BACK ORDER. *TR
NHTSA ODI #10470231
39,200 miles · Aug 10, 2012
Power Train
WHILE ON VACATION I WAS DRIVING 45 MPH AND HEARD A WHINNING NOISE COMING FROM THE REAR OF TRUCK. IT GOT LOUDER AND LOUDER VERY QUICKLY AND THEN I HEARD A LARGE BANGING NOISE AND THE REAR WHEELS FROZE UP CAUSING THE TRUCK TO SKID TO A STOP IN THE MIDDLE OF THE ROAD. GOT OUT OF SAID TRUCK AND NOTICED THE REAR OF THE DRIVESHAFT LA…
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WHILE ON VACATION I WAS DRIVING 45 MPH AND HEARD A WHINNING NOISE COMING FROM THE REAR OF TRUCK. IT GOT LOUDER AND LOUDER VERY QUICKLY AND THEN I HEARD A LARGE BANGING NOISE AND THE REAR WHEELS FROZE UP CAUSING THE TRUCK TO SKID TO A STOP IN THE MIDDLE OF THE ROAD. GOT OUT OF SAID TRUCK AND NOTICED THE REAR OF THE DRIVESHAFT LAYING ON THE GROUND. PUT IT IN 4 WHEEL DRIVE TO GET OF THE ROAD AND NOTICED THE REAR WHEELS WERE LOCKED SOLID AND WAS BARELY ABLE TO GET THE TRUCK TO MOVE TO GET OF THE ROAD. THE PINION NUT CAME LOOSE CAUSING THE DRIVESHAFT TO FALL OFF IN TURN THE PINION MOVED IN THE REAR AXEL CAUSING CATASTROPHIC FAILURE INSIDE THE REAR DIFFERENTIAL. *TR
NHTSA ODI #10470152
30,000 miles · Aug 6, 2012
Power Train
THE VEHICLE BEGAN MAKING A WHINING NOISE IN THE REAR DURING DECELERATION, BOTH FROM SIMPLY LETTING OFF THE ACCELERATOR AND BRAKING. NOISE BEGAN 50 MILES FROM RESIDENCE, AND PROGRESSIVELY BECAME LOUDER ON THE DRIVE HOME. AT ROUGHLY 17 MILES FROM MY CURRENT RESIDENCE, A LOUD NOISE WAS HEARD FOLLOWED BY MORE LOUD RUMBLING AND SMO…
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THE VEHICLE BEGAN MAKING A WHINING NOISE IN THE REAR DURING DECELERATION, BOTH FROM SIMPLY LETTING OFF THE ACCELERATOR AND BRAKING. NOISE BEGAN 50 MILES FROM RESIDENCE, AND PROGRESSIVELY BECAME LOUDER ON THE DRIVE HOME. AT ROUGHLY 17 MILES FROM MY CURRENT RESIDENCE, A LOUD NOISE WAS HEARD FOLLOWED BY MORE LOUD RUMBLING AND SMOKE FROM DIFFERENTIAL FLUID SLINGING ONTO THE EXHAUST. I TURNED ON TO A SIDE ROAD AND BEGAN COASTING UNTIL REACHING A SAFE LOCATION TO PULL OVER; HOWEVER, BEFORE STOPPING THE REAR DIFFERENTIAL LOCKED UP CAUSING THE TRUCK TO SKID TO A STOP. UPON EXITING THE VEHICLE, I COULD SEE THE DRIVE SHAFT HANGING ON THE GROUND, IT'S REAR CONNECTING BOLTS SHEARED, AND THE DIFFERENTIAL YOKE WAS MISSING. I COULD SEE THE PINION SHAFT SLOPPILY RESTING IN THE THE DIFFERENTIAL WHERE THE YOKE SHOULD HAVE BEEN. I PAID TO HAVE IT HAULED TO THE LOCAL DODGE DEALERSHIP, WHO INDICATED THEY "DID NOT HAVE A QUALIFIED REAR END TECHNICIAN", AND SAID I'D "HAVE TO HAVE IT TOWED TO ANOTHER ONE AT MY PERSONAL EXPENSE" 50 MILES AWAY. AFTER CONTACTING CHRYSLER, THEY REIMBURSED MY TOWING EXPENSE, AND TOWED IT TO THE OTHER DEALERSHIP. THE SECOND DEALERSHIP SAID THE RING AND PINION WERE BROKEN, AND WOULD HAVE TO BE REPLACED ALONG WITH THE CARRIER. AFTER WAITING ONE MONTH WITHOUT MY TRUCK, I CONTACTED THEM AND WAS TOLD THE PARTS NECESSARY TO FIX THE VEHICLE WERE ON BACKORDER, AND WOULD NOT BE AVAILABLE FOR 3 MONTHS. I CALLED CHRYSLER TO EXPEDITE THE PARTS, AND THAT AFTERNOON WAS TOLD THE PARTS HAD ARRIVED, AND WOULD BE FIXED IN 2-3 DAYS. AFTER ONE DAY, I WAS TOLD CHRYSLER OKAYED AFTERMARKET PARTS TO EXPEDITE THE REPAIR, BUT WERE FLAWED PREVENTING CORRECT REPAIR. THEY OFFERED TO LET ME HAVE IT BACK, BUT WARNED ME IT WOULD MAKE MORE NOISE THAN BEFORE. I REQUESTED THAT THEY FIX IT RIGHT OR NOT AT ALL. CHRYSLER THEN INDICATED PARTS WOULD NOT BE AVAILABLE FOR 5 MONTHS. *TR
NHTSA ODI #10469435
34,200 miles · Jul 27, 2012
Power Train
TL* THE CONTACT OWNS A 2010 DODGE RAM 1500. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, A HUMMING SOUND EMITTED FROM THE POWER TRAIN. THE CONTACT APPLIED THE BRAKES AND THE REAR DIFFERENTIAL SEIZED, DESTROYING THE POWER TRAIN. THE CONTACT HAD THE VEHICLE TOWED TO A DEALER. THE DEALER WAS UNABLE TO REPAIR THE VEHICLE DUE TO PAR…
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TL* THE CONTACT OWNS A 2010 DODGE RAM 1500. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, A HUMMING SOUND EMITTED FROM THE POWER TRAIN. THE CONTACT APPLIED THE BRAKES AND THE REAR DIFFERENTIAL SEIZED, DESTROYING THE POWER TRAIN. THE CONTACT HAD THE VEHICLE TOWED TO A DEALER. THE DEALER WAS UNABLE TO REPAIR THE VEHICLE DUE TO PART AVAILABILITY. THE CONTACT THEN TRADED THE VEHICLE TO THE DEALER. THE FAILURE MILEAGE WAS 34,200.
NHTSA ODI #10468024
700 miles · Jul 26, 2012
Electronic Stability Control (esc)Steering
AS I WAS APPROACHING TRUCK MOVING SAME DIRECTION IN OTHER LANE (4 LANE DIVIDED) IT HAD A RACK ON TOP WITH METAL SIDING ON IT NOT TIED DOWN CAUSE THE WIND CAUGHT IT A IT CAME RIGHT INTO MY PATH. I BRAKE AND STEERED RIGHT. AND IT WAS ALL OVER. I TOOK IT TO DEALER TOLD THEM THAT IT WAS NOT RIGHT THEY CHECKED HAD NOT HEARD OF ANY PR…
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AS I WAS APPROACHING TRUCK MOVING SAME DIRECTION IN OTHER LANE (4 LANE DIVIDED) IT HAD A RACK ON TOP WITH METAL SIDING ON IT NOT TIED DOWN CAUSE THE WIND CAUGHT IT A IT CAME RIGHT INTO MY PATH. I BRAKE AND STEERED RIGHT. AND IT WAS ALL OVER. I TOOK IT TO DEALER TOLD THEM THAT IT WAS NOT RIGHT THEY CHECKED HAD NOT HEARD OF ANY PROBLEMS. THEN IT HAPPEND AGAIN DOING 65 I WAS SIDEWAYS INTO ON COMING TRAFFIC IN SPLIT SECOND AND STOPPED WITHIN 150 FEET IF I HAD NOT COUNTER STEERED AS FAST AS ANYONE COULD. IN BOTH CASES IT WOULD HAVE ROLLED. TOLD DEALER IT SHOULD NOT BE ON THE ROAD. THEY WANTED TO TEST DRIVE MY RT TRUCK AND SEE IF THEY COULD GET IT SIDEWAYS I TOLD THEM NOT ON MY INSURANCE OR WITHOUT A TEST TRACK AND A WET SKIDPAD AND ROLL CAGE. BOTTOM LINE MY TRUCK IS UNSAFE AND HAVE BEEN WAITING FOR SOMETHING TO HAPPEN. I DO NOT DRIVE IT NOWHERE BUT WORK WITH BOTH HANDS ON THE WHEEL AND STABILITY CONTROL OFF. I THINK THE COMPUTER THAT SENSES A SKID IS NOT RIGHT LIKE IT MADE THE WRONG TIRE LOCK UP. MY TRUCK HAS DONE IT TWICE. BET IT CAN AGAIN IF YOU WANT TO CHECK. PLEASE GET ON THIS BEFORE SOME ONE IS HURT OR WORSE LIKE I TOLD THE DEALER. IT COULD HAVE BEEN YOUR WIFE AND KIDS IN THE TRUCK OR ON THE ROAD COMING AT A TRUCK THAT WAS OUT OF CONTROL AND NO FAULT OF THERE OWN. I KNOW HOW TEST FOR THIS PROBLEM. *TR
NHTSA ODI #10467883
85,200 miles · Jul 26, 2012
Power Train
TL* THE CONTACT OWNS A 2010 DODGE RAM 1500. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, BOTH OF THE REAR WHEELS LOCKED. AS A RESULT, THE DRIVE SHAFT BROKE OFF THE REAR DIFFERENTIAL. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DETERMINE WHAT CAUSED THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE PROBLEM WHO DID NO…
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TL* THE CONTACT OWNS A 2010 DODGE RAM 1500. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, BOTH OF THE REAR WHEELS LOCKED. AS A RESULT, THE DRIVE SHAFT BROKE OFF THE REAR DIFFERENTIAL. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DETERMINE WHAT CAUSED THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE PROBLEM WHO DID NOT OFFER ANY ASSISTANCE. THE VIN WAS NOT AVAILABLE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 85,200.
NHTSA ODI #10467819
50,000 miles · Jul 26, 2012
Power TrainVehicle Speed ControlWheels
I WAS DRIVING VEHICLE AT 55 MPH ALONG UNDIVIDED 2 LANE HIGHWAY. DIFFERENTIAL BEGAN TO MAKE WHINING NOISE AND THEN WITHIN 1-2 MINUTES THE REAR DIFFERENTIAL LOCKED UP AND THE DRIVE SHAFT YOKE BROKE CAUSING THE DRIVE SHAFT TO DROP TO THE GROUND. DUE TO THE SPEED, VEHICLE CONTROL WAS DIFFICULT WHILE ATTEMPTING TO STOP. ONCE STOPP…
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I WAS DRIVING VEHICLE AT 55 MPH ALONG UNDIVIDED 2 LANE HIGHWAY. DIFFERENTIAL BEGAN TO MAKE WHINING NOISE AND THEN WITHIN 1-2 MINUTES THE REAR DIFFERENTIAL LOCKED UP AND THE DRIVE SHAFT YOKE BROKE CAUSING THE DRIVE SHAFT TO DROP TO THE GROUND. DUE TO THE SPEED, VEHICLE CONTROL WAS DIFFICULT WHILE ATTEMPTING TO STOP. ONCE STOPPED, DRIVE SHAFT YOKE WAS OBVIOUSLY SNAPPED OFF AND PASSENGER SIDE REAR TIRE HAD MELTED RUBBER FROM BEING DRAGGED FOR A FEW HUNDRED FEET WHEN DIFFERENTIAL LOCKED UP. VEHICLE WAS TAKEN TO DEAL AND AFTER 2 WEEKS DETERMINATION WAS MADE THAT SOMETHING SEIZED IN THE DIFFERENTIAL AND CAUSED INTERNALS TO BE DESTROYED. DEALER HAS NOT MENTIONED CURRENT RECALLS OR INVESTIGATIONS. AS OF NOW, I HAVE BEEN TOLD THAT DODGE IS NOT MAKING THE PARTS NEEDED AND THAT A MINIMUM OF 1 MONTH LEAD TIME IS EXPECTED BEFORE PARTS BECOME AVAILABLE. I AM TOLD NO LOANER VEHICLE OR RENTAL CAR WILL BE PROVIDED. *TR
NHTSA ODI #10467805
24,000 miles · Jul 25, 2012
Power TrainUnknown Or Other
I NOTICED THE VEHICLE MAKING A HUMMING/RUBBING SOUND COMING FROM THE REAR END WHEN MOVING 20-35MPH AND COMING TO A STOP. I PARKED THE VEHICLE UNTIL I WAS ABLE TO GET IT TO THE DEALERSHIP, SO THE TECHNICIAN COULD TEST DRIVE AND LOCATE THE PROBLEM. UPON HIS INITIAL LEAVING HE HEARD NOTHING SO HE PROCEEDED TO PICK UP THE SPEED TO …
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I NOTICED THE VEHICLE MAKING A HUMMING/RUBBING SOUND COMING FROM THE REAR END WHEN MOVING 20-35MPH AND COMING TO A STOP. I PARKED THE VEHICLE UNTIL I WAS ABLE TO GET IT TO THE DEALERSHIP, SO THE TECHNICIAN COULD TEST DRIVE AND LOCATE THE PROBLEM. UPON HIS INITIAL LEAVING HE HEARD NOTHING SO HE PROCEEDED TO PICK UP THE SPEED TO 55MPH TO CHECK FOR VIBRATION IN A NEUTRAL COAST DOWN. UPON REACHING 45MPH THE DRIVE-SHAFT COMPLETELY SNAPPED AND SEPARATED FROM THE REAR END ASSEMBLY, RESULTING IN THE REAR END COMPLETELY LOCKING UP AND SENDING THE TRUCK SPINNING OUT OF CONTROL AND THE DRIVE SHAFT SWINGING VIOLENTLY UNDERNEATH THE TRUCK UNTIL THE TRUCK CAME TO REST IN THE MIDDLE OF THE ROAD. UPON FURTHER INSPECTION WHEN THE TRUCK WAS TOWED BACK TO THE DEALERSHIP THE TECHNICIAN NOTICED THE RACK AND PINION ASSEMBLY COMPLETELY UNTHREADED ITSELF FROM THE DRIVESHAFT RESULTING IN A CATASTROPHIC FAILURE OF THE REAR END. AS A RESULT IT COMPLETELY DESTROYED THE GEARS AND COMPONENTS WITHIN THE REAR END HOUSING INCLUDING DEEP GASHES INTO THE HOUSING ITSELF RENDERING IT UNSAFE TO RE-BUILD ON. THE DEALERSHIP HAS SINCE ORDERED A WHOLE NEW REAR END ASSEMBLY TO BE PURCHASED AND PLACED ON THE TRUCK AND CURRENTLY WAITING ON PARTS AS I WRITE THIS LETTER. *TR
NHTSA ODI #10467683
Official recalls
4Mar 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.
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.
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.
Oct 2, 2012
Chrysler is recalling certain model year 2009-2010, Ram 1500 and Dodge Dakota trucks, manufactured from July 1, 2009, through November 30, 2009, because the rear axle pinion nut may loosen due to a lack of adhesive.
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: Chrysler will notify owners, and dealers will install a pinion nut retainer, free of charge. The recall began on June 17, 2013. Owners may contact Chrysler at 1-800-247-9753.
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
1EA19001 · 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.