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2012 Fiat 500

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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When problems were reported

Mileage at the reported incident

289 reports with mileage · 106 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.

  • Power Train. Review the 200 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 63 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 51 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

21 crash reports4 fire reports16 injury reports

Engine complaints

51 reports
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38,000 miles · Jul 12, 2016
EnginePower TrainVehicle Speed Control

TL* THE CONTACT OWNS A 2012 FIAT 500. WHILE DRIVING VARIOUS SPEEDS WITH THE ACCELERATOR PEDAL DEPRESSED, THE VEHICLE HESITATED TO ACCELERATE WITHOUT WARNING. THE CONTACT ALSO STATED THAT A BURNING PLASTIC ODOR EMITTED FROM THE VEHICLE. IN ADDITION, THE CONTACT STATED THAT THE VEHICLE HESITATED TO START. THE CONTACT MENTIONED THA…

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TL* THE CONTACT OWNS A 2012 FIAT 500. WHILE DRIVING VARIOUS SPEEDS WITH THE ACCELERATOR PEDAL DEPRESSED, THE VEHICLE HESITATED TO ACCELERATE WITHOUT WARNING. THE CONTACT ALSO STATED THAT A BURNING PLASTIC ODOR EMITTED FROM THE VEHICLE. IN ADDITION, THE CONTACT STATED THAT THE VEHICLE HESITATED TO START. THE CONTACT MENTIONED THAT THE FAILURES RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE CLUTCH PEDAL NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE CONTACT LATER RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V302000 (POWER TRAIN); 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 NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 38,000. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI #10884199

15 miles · Jul 5, 2016
Electrical SystemEngineFuel System, Gasoline

TL* THE CONTACT OWNS A 2012 FIAT 500. WHEN THE IGNITION WAS TURNED TO THE ON POSITION, HALF OF THE INSTRUMENT PANEL FAILED TO ILLUMINATE. THE FAILURE RECURRED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE INSTRUMENT PANEL WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. WHEN …

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TL* THE CONTACT OWNS A 2012 FIAT 500. WHEN THE IGNITION WAS TURNED TO THE ON POSITION, HALF OF THE INSTRUMENT PANEL FAILED TO ILLUMINATE. THE FAILURE RECURRED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE INSTRUMENT PANEL WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. WHEN THE IGNITION WAS TURNED TO THE ON POSITION, THE ENGINE REVVED BUT THE VEHICLE FAILED TO START. THE IGNITION HAD TO BE TURNED TO THE OFF POSITION AND BACK ON IN ORDER FOR THE VEHICLE TO START. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE STARTED IDLE GEAR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE CONTACT ALSO STATED THAT THE FUEL GAUGE FAILED TO REGISTER THE FUEL RANGE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE FUEL GAUGE FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 15. ....UPDATED 08/29/16 *BF

NHTSA ODI #10882556

29,600 miles · May 11, 2016
EnginePower Train

TOOK CAR IN FOR SERVICE WITH 29,600 MILES ON IT. WAS TOLD IT NEEDED NEW VALVE COVER GASKET, BOTH CV BOOTS REPLACED, AND BOTH TRANSMISSION OUTPUT SEALS REPLACED. I HAD ALREADY REPLACED ONE TRANSMISSION OUTPUT SEAL AT 22,000 MILES. TOTAL COST $900 ALL OUT OF WARRANTY. I'VE ALREADY FILED A COMPLAINT ABOUT HAVING TO REPLACE THE CLUT…

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TOOK CAR IN FOR SERVICE WITH 29,600 MILES ON IT. WAS TOLD IT NEEDED NEW VALVE COVER GASKET, BOTH CV BOOTS REPLACED, AND BOTH TRANSMISSION OUTPUT SEALS REPLACED. I HAD ALREADY REPLACED ONE TRANSMISSION OUTPUT SEAL AT 22,000 MILES. TOTAL COST $900 ALL OUT OF WARRANTY. I'VE ALREADY FILED A COMPLAINT ABOUT HAVING TO REPLACE THE CLUTCH. SEEMS THERE ARE A LOT OF ISSUES WITH THIS CAR.

NHTSA ODI #10864406

28,488 miles · Apr 27, 2016
EnginePower TrainSuspension

TL* THE CONTACT OWNS A 2012 FIAT 500. THE CONTACT STATED THAT WHILE DRIVING AT 40 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE TECHNICIAN INFORMED THAT THE VEHICLE NEEDED TO BE RESET. THE VEHICLE WAS REPAIRED. THE FAILURE RECURRED WITH AN ABNORMAL SOUND EMITTING FROM THE VEHICLE. THE VEHI…

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TL* THE CONTACT OWNS A 2012 FIAT 500. THE CONTACT STATED THAT WHILE DRIVING AT 40 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE TECHNICIAN INFORMED THAT THE VEHICLE NEEDED TO BE RESET. THE VEHICLE WAS REPAIRED. THE FAILURE RECURRED WITH AN ABNORMAL SOUND EMITTING FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 28,488. ....UPDATED 07/05/16 *BF THE CONSUMER STATED SHE TOOK THE VEHICLE TO THE DEALER, AFTER RECEIVING A RECALL NOTICE REGARDING THE TRANSMISSION. HOWEVER, THE DEALER INFORMED HER, THE BACK UP DEVICE WAS NOT WORKING. THE CONSUMER ALSO STATED THERE WAS AN ISSUE WITH THE SUSPENSION. IT FELT AS THOUGH THE VEHICLE WAS GOING TO TURN OVER. UPDATED 07/21/16.*JB

NHTSA ODI #10861706

952 miles · Oct 1, 2015
Engine

CAR SUDDENLY STOPS RUNNING WHILE JUST DRIVING FORWARD. IGNITION KEY REMAINS IN "ON" POSITION, BUT ALL ACCESSORY/WARNING LIGHTS COME ON. THIS HAS HAPPENED 3 TIMES, THE FIRST WHILE CAR HAD 950 MILES ON IT IN OCTOBER 1012. CAR WAS TAKEN TO DEALERSHIP SERVICE DEPARTMENT. WHEN I RECEIVED IT BACK I WAS TOLD THAT THEY HAD "CHANGE…

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CAR SUDDENLY STOPS RUNNING WHILE JUST DRIVING FORWARD. IGNITION KEY REMAINS IN "ON" POSITION, BUT ALL ACCESSORY/WARNING LIGHTS COME ON. THIS HAS HAPPENED 3 TIMES, THE FIRST WHILE CAR HAD 950 MILES ON IT IN OCTOBER 1012. CAR WAS TAKEN TO DEALERSHIP SERVICE DEPARTMENT. WHEN I RECEIVED IT BACK I WAS TOLD THAT THEY HAD "CHANGED THE SOFTWARE". THE SECOND TIME THE CAR CEASED RUNNING (5,414 MILES) WHILE BEING DRIVEN FORWARD, I HAD IT TOWED TO THE DEALERSHIP AND RECEIVED IT BACK WITH THE INFORMATION THAT THEY COULD NOT FIND ANYTHING WRONG WITH IT. I STOPPED DRIVING THE VEHICLE EXCEPT FOR OCCASIONALLY DRIVING IT AROUND MY QUIET NEIGHBORHOOD TO KEEP THE BATTERY CHARGED UP. ON SEPTEMBER 26, 2015, I DECIDED TO DRIVE THE CAR TO A NEARBY TARGET (APPROX. 1.5 MILES FROM MY HOME). THE CAR DROVE THERE PERFECTLY BUT CEASED RUNNING AS I DROVE TOWARDS HOME. AGAIN I HAD THE CAR TOWED TO THE SERVICE DEPARTMENT AT FIAT/ALFA ROMEO OF AUSTIN. TODAY FIAT CUSTOMER SERVICE CALLED ME AND SAID THE SERVICE FACILITY WAS NOT ABLE TO FIND ANYTHING WRONG WITH THE CAR AND WAS RETURNING THE CAR TO ME AGAIN WITHOUT DIAGNOSIS OR REPAIR OF THE PROBLEM. MY CASE NUMBER WITH FIAT CUSTOMER SERVICE IS: 278-579-22. ALL THREE OF THESE VERY FRIGHTENING SUDDEN STALLS OCCURRED ON CITY STREETS. THERE IS NO UNUSUAL NOISE OR WARNING, THE CAR JUST SUDDENLY STOPS RUNNING. I WAS DRIVING STRAIGHT AHEAD EACH TIME. THE ENGINE WAS NOT HOT OR WERE THERE ANY UNUSUAL ODORS OR SOUNDS. I TURNED ON MY EMERGENCY FLASHERS, TURNED THE IGNITION KEY TO THE "OFF" POSITION, PUT THE SHIFT LEVER IN "PARK" AND THE CAR IMMEDIATELY STARTED AGAIN AND RAN WITHOUT FURTHER DIFFICULTY. I WAS VERY, VERY LUCKY THAT I WAS NOT HIT FROM BEHIND AS THE LAST TWO INCIDENTS WERE IN BUSY TRAFFIC AREAS. I WILL NOT DRIVE THIS VEHICLE AGAIN.

NHTSA ODI #10779157

48,000 miles · Sep 8, 2015
Engine

MY 2012 FIAT IS HAVING STARTER ISSUES. SOMETIMES THE ENGINE JUST CUTS OFF. I TOOK THE CAR IN AND THEY TOLD ME THAT ALL 2012 FIATS RECENTLY SERVICED, ARE HAVING THIS ISSUE. THERE IS NO FIX UNTIL CHRYSLER CREATES A CODE FOR THE SYSTEM. I ASKED HOW LONG HAS THIS BEEN GOING ON AND HE SAID 3 MONTHS NOW. SO BASICALLY I HAVE TO DEAL WI…

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MY 2012 FIAT IS HAVING STARTER ISSUES. SOMETIMES THE ENGINE JUST CUTS OFF. I TOOK THE CAR IN AND THEY TOLD ME THAT ALL 2012 FIATS RECENTLY SERVICED, ARE HAVING THIS ISSUE. THERE IS NO FIX UNTIL CHRYSLER CREATES A CODE FOR THE SYSTEM. I ASKED HOW LONG HAS THIS BEEN GOING ON AND HE SAID 3 MONTHS NOW. SO BASICALLY I HAVE TO DEAL WITH MY CAR BARLEY STARTING AND POSSIBILY CUTTING OFF AND THERE IS NO SOLUTION. THIS COULD BE DANGEROUS AND MAY LEAD TO OTHER DAMAGES. SOMETHING NEEDS TO BE DONE.

NHTSA ODI #10762239

6,000 miles · Aug 24, 2015
EnginePower Train

THE CAR GOT STUCK WITH MUD UNDER THE CAR. WHEN WE GO IT PULLED OUT AND TOOK IT TO THE DEALER WOULD HAVE COST US 3000 TO HAVE IT FIXED. THAT WAY TO MUCH AND THEY TOLD THERE WAS PROBLEM WITH THE ENGINE NOW. THEY WOULDN'T WORK A DEAL ON IT. WHEN DRIVING HOME WE NOTICED THRY LEFT A PLATE FROM UNDER THE STERLING WILL AND HAD RIP THE…

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THE CAR GOT STUCK WITH MUD UNDER THE CAR. WHEN WE GO IT PULLED OUT AND TOOK IT TO THE DEALER WOULD HAVE COST US 3000 TO HAVE IT FIXED. THAT WAY TO MUCH AND THEY TOLD THERE WAS PROBLEM WITH THE ENGINE NOW. THEY WOULDN'T WORK A DEAL ON IT. WHEN DRIVING HOME WE NOTICED THRY LEFT A PLATE FROM UNDER THE STERLING WILL AND HAD RIP THE BLACK PEACE THAT WRAPES OROUND IT.WE TO IT TO A TRAMISSION PLACE IN TOWN WHERE THEY FIXED THE TRANSMISSIN , THE CAR DRIVE LIKE A MESS I JUST AFRAID TO GO LOMG DISTANCE.

NHTSA ODI #10758772

Mileage unknown · Jul 29, 2015
EngineUnknown Or Other

ENGINE LIGHT AND TRANSMITION LIGHT KEEPS COMING ON ALONG WITH OTHER DASH LIGHTS. MY CAR ALSO RANDOMLY DIED, EVERYTHING WOULD CUT ON BUT MY CAR WOULDN'T TURN OVER. WE PLACED A NEW BATTERY IN IT AND THE FIAT DID THE SAME THING SO WE PUT THE OLD ONE BACK ON AND TRIED TO JUMP START IT, THE CAR ACTED LIKE IT WAS GOING TO TURN OVER BU…

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ENGINE LIGHT AND TRANSMITION LIGHT KEEPS COMING ON ALONG WITH OTHER DASH LIGHTS. MY CAR ALSO RANDOMLY DIED, EVERYTHING WOULD CUT ON BUT MY CAR WOULDN'T TURN OVER. WE PLACED A NEW BATTERY IN IT AND THE FIAT DID THE SAME THING SO WE PUT THE OLD ONE BACK ON AND TRIED TO JUMP START IT, THE CAR ACTED LIKE IT WAS GOING TO TURN OVER BUT NEVER DID. I TOOK MY FIAT TO A FIAT DEALERSHIP TO BE FIXED THEY SAID IT WAS THE BATTERY THE WHOLE TIME BUT THE COMPUTER CHIPED WAS FRIED. THE PROBLEM IS THE FIAT HAS ONLY BEEN BACK A WEEK AND OCCASIONALLY THE ENGINE LIGHT AND TRANSMITION AND A COUPLE MORE LIGHTS ARE STILL COMMING ON. I HAVEN'T EVEN HAD THE CAR A YEAR AND I AM ALREADY HAVING MAJOR PROBLEMS.

NHTSA ODI #10744816

15,000 miles · May 21, 2015
Engine

ENGINE LIGHT WHEN ON WITH 10 K MILES IN MY ENGINE ONLY 1/4 OIL LEFT, THE DEALER PERFORMECE THE OIL CHANGE 3 WEEKS LATTER ENGINE LIGHT ON AGAIN. ONLY 1/4 OIL INSIDE, THEY DID THE (COT) CONSUMCION OIL TEST EVERY 500 MILES FOR 4 TIMES. ANSWER FROM THE MANUFACTURE "EVERY 1 K MILES I HAVE TO ADD 1/4 OIL" NOW I HAVE TO CHECK IT …

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ENGINE LIGHT WHEN ON WITH 10 K MILES IN MY ENGINE ONLY 1/4 OIL LEFT, THE DEALER PERFORMECE THE OIL CHANGE 3 WEEKS LATTER ENGINE LIGHT ON AGAIN. ONLY 1/4 OIL INSIDE, THEY DID THE (COT) CONSUMCION OIL TEST EVERY 500 MILES FOR 4 TIMES. ANSWER FROM THE MANUFACTURE "EVERY 1 K MILES I HAVE TO ADD 1/4 OIL" NOW I HAVE TO CHECK IT EVERY 1 K... NOT INCLUDE IN THE GUARANTE. IF THE MANUEAL SAYS OIL CHANGE EVERY 8 K MILES HOW IS POSIBLE 1/4 EVERY 1 K MILES I THINK THEY JUST CLEAN THEIR HANDS...

NHTSA ODI #10717899

11,000 miles · Jan 15, 2015
EnginePower Train

MY CAR HAD PROBLEMS SHIFTING GEARS AND THE HIGH COOLANT TEMPERATURE LIGHT WENT ON. THE WARNING SAID STOP AND TURN CAR OFF IMMEDIATELY. I PULLED INTO MY DRIVEWAY AND HAD THE CAR TOWED TO STATELINE FIAT WHERE I PURCHASED THE CAR. THEY TOPPED OFF THE COOLANT AND SAID THE CAR WAS READY TO BE PICKED UP. I GOT IN THE CAR AND IT STA…

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MY CAR HAD PROBLEMS SHIFTING GEARS AND THE HIGH COOLANT TEMPERATURE LIGHT WENT ON. THE WARNING SAID STOP AND TURN CAR OFF IMMEDIATELY. I PULLED INTO MY DRIVEWAY AND HAD THE CAR TOWED TO STATELINE FIAT WHERE I PURCHASED THE CAR. THEY TOPPED OFF THE COOLANT AND SAID THE CAR WAS READY TO BE PICKED UP. I GOT IN THE CAR AND IT STARTED TO SHAKE WHEN I TURNED THE IGNITION. THEY SAID IT WAS A LOOSE CAP AND TIGHTENED IT. I DROVE BACK HOME AND WITHIN 3 MONTHS THE SAME THING HAPPENED AGAIN. THE CAR WAS TOWED TO A NEW LOCAL FIAT. OVER THE PAST 2 AND A HALF YEARS, I HAVE HAD TO PULL OFF ON THE SIDE OF THE ROAD MULTIPLE TIMES AND HAVE THE CAR TOWED. NO ONE CAN SEEM TO FIND THE EXACT ISSUE WITH THE CAR, BUT THEY KEEP TELLING ME IT IS FIXED. THE BOTTOM LINE IS I DO NOT FEEL SAFE DRIVING THIS CAR. I FEEL MY SAFETY AND THE SAFETY OF OTHER DRIVERS IS IN JEOPARDY WHEN THIS VEHICLE IS ON THE ROAD. *TR

NHTSA ODI #10672703

Official recalls

3

19V817000 · Power Train:automatic Transmission; Power Train:automatic Transmission:lever And Linkage:floor Shift

Nov 15, 2019

Chrysler (FCA US LLC) is recalling certain 2012-2013 Fiat 500 vehicles equipped with 6-speed automatic transmissions. The shifter cable bushing may fail allowing the cable to detach from the transmission.

Consequence & remedy

Consequence: If the shifter cable detaches from the transmission, the transmission may not shift into the gear selected by the driver. Additionally, despite selecting PARK with the shifter, the vehicle may roll away. These scenarios may increase the risk of a crash.

Remedy: Chrysler will notify owners, and dealers will replace the shifter cable adjuster, free of charge. The recall began January 9, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is VB4.

Additional source detail variants (2)

Power Train:automatic Transmission:lever And Linkage:floor Shift

Chrysler (FCA US LLC) is recalling certain 2012-2013 Fiat 500 vehicles equipped with 6-speed automatic transmissions. The shifter cable bushing may fail allowing the cable to detach from the transmission.

Consequence: If the shifter cable detaches from the transmission, the transmission may not shift into the gear selected by the driver. Additionally, despite selecting PARK with the shifter, the vehicle may roll away. These scenarios may increase the risk of a crash.

Remedy: Chrysler will notify owners, and dealers will replace the shifter cable adjuster, free of charge. The recall began January 9, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is VB4.

Power Train:automatic Transmission

Chrysler (FCA US LLC) is recalling certain 2012-2013 Fiat 500 vehicles equipped with 6-speed automatic transmissions. The shifter cable bushing may fail allowing the cable to detach from the transmission.

Consequence: If the shifter cable detaches from the transmission, the transmission may not shift into the gear selected by the driver. Additionally, despite selecting PARK with the shifter, the vehicle may roll away. These scenarios may increase the risk of a crash.

Remedy: Chrysler will notify owners, and dealers will replace the shifter cable adjuster, free of charge. The recall began January 9, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is VB4.

16V302000 · Power Train:manual Transmission

May 16, 2016

Chrysler (FCA US LLC) is recalling certain model year 2012-2016 Fiat 500 vehicles manufactured June 21, 2010, through January 12, 2016, equipped with a manual transmission. The clutch diaphragm spring may fracture and fail, causing an inability to switch gears.

Consequence & remedy

Consequence: If the clutch diaphragm spring fails, the driver may not be able to shift gears or the vehicle may lose motive power, increasing the risk of a crash.

Remedy: The remedy for this recall will include the installation of a clutch pedal limiter and a clutch pedal switch. The recall began on November 10, 2016. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is S34.

11V550000 · Service Brakes, Hydraulic:fluid

Nov 10, 2011

CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2012 DODGE JOURNEY AND FIAT 500 VEHICLES MANUFACTURED FROM OCTOBER 24, 2011, THROUGH OCTOBER 26, 2011. SOME VEHICLES WERE ASSEMBLED WITH CONTAMINATED BRAKE FLUID AND MAY EXPERIENCE A DEGRADATION OF THE SEALING COMPONENTS WITHIN THE BRAKE SYSTEM.

Consequence & remedy

Consequence: THIS COULD LEAD TO LOSS OF BRAKING ABILITY INCREASING THE RISK OF A CRASH.

Remedy: CHRYSLER WILL NOTIFY OWNERS AND REPLACE ALL BRAKE COMPONENTS THAT COME IN CONTACT WITH HYDRAULIC BRAKE FLUID. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 1, 2012. 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.