NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
67 reportsClear category filter9,980 miles · Sep 22, 2015
Power Train
THE CHECK ENGINE LIGHT CAME ON, THE CHECK TRANSMISSION LIGHT CAME ON, "CLUTCH OVER HEATING" DISPLAYED AND THE CAR STOPPED SHIFTING SMOOTHLY. THE DEALER "RESET" THE CLUTCH; AFTER DRIVING 1 MILE, IT HAPPENED AGAIN STOPPING IN TRAFFIC ON A VERY BUSY HIGHWAY DURING RUSH HOUR "WAIT WHILE THE CLUTCH COOLS DOWN" ALMOST CAUSING CRASHES…
Read full complaint
THE CHECK ENGINE LIGHT CAME ON, THE CHECK TRANSMISSION LIGHT CAME ON, "CLUTCH OVER HEATING" DISPLAYED AND THE CAR STOPPED SHIFTING SMOOTHLY. THE DEALER "RESET" THE CLUTCH; AFTER DRIVING 1 MILE, IT HAPPENED AGAIN STOPPING IN TRAFFIC ON A VERY BUSY HIGHWAY DURING RUSH HOUR "WAIT WHILE THE CLUTCH COOLS DOWN" ALMOST CAUSING CRASHES AS CARS VEERED TO GET AROUND MY STOPPED CAR. THE DEALER REPLACED THEN CLUTCH. IN LESS THAN 2 MILES, THE CAR HAD A SIMILAR PROBLEM, BUT WOULD ONLY AUTOMATICALLY GO INTO GEARS 2, 4, 6 AND WOULD SHIFT IN A JERKING MANNER AT BEST. REVERSE GEAR WAS NOT AVAILABLE AND ALARMS WOULD SOUND IF I PUT THE CAR IN NEUTRAL OR REVERSE ("THIS GEAR NOT AVAILABLE" WOULD DISPLAY.) THE DEALERSHIP IS REPLACING THE TRANSMISSION AND THE FLYWHEEL AND TOLD ME THIS MODEL HAD PROBLEMS WITH THE CLUTCH AND TRANSMISSION. THE CAR HAS NOW JUST GONE OVER 10,000 MILES. I DO NOT TRUST THIS CAR. I WANT AND NEED A REPLACEMENT. I DO NOT BELIEVE AFTER 3 ATTEMPTS - TWICE LEAVING ME STOPPED IN THE MIDDLE OF HEAVY TRAFFIC ON THE HIGHWAY - THE CAR IS ANYTHING OTHER THAN A LEMON.
NHTSA ODI #10767485
3,506 miles · Sep 10, 2015
EnginePower TrainUnknown Or Other
I WAS PULLING INTO TRAFFIC ON AN EXTREMELY BUSY ROAD. THERE IS ALWAYS HEAVY TRAFFIC ON THIS ROAD SO YOU MUST PULL OUT INTO TRAFFIC QUICKLY. WHEN DOING SO I PRESSED THE GAS PEDAL ALMOST TO THE FLOOR. THE CAR DID NOT SHIFT INTO ANY GEAR. IT WAS LIKE IT WENT INTO NEUTRAL. THE RPM'S REVED AND IT WOULD NOT MOVE. I WAS ALMOST HIT ON B…
Read full complaint
I WAS PULLING INTO TRAFFIC ON AN EXTREMELY BUSY ROAD. THERE IS ALWAYS HEAVY TRAFFIC ON THIS ROAD SO YOU MUST PULL OUT INTO TRAFFIC QUICKLY. WHEN DOING SO I PRESSED THE GAS PEDAL ALMOST TO THE FLOOR. THE CAR DID NOT SHIFT INTO ANY GEAR. IT WAS LIKE IT WENT INTO NEUTRAL. THE RPM'S REVED AND IT WOULD NOT MOVE. I WAS ALMOST HIT ON BOTH SIDES OF THE VEHICAL. THIS HAPPENED ON SATURDAY SEPT. 5TH. ON TUES. SEPT 8TH I WAS ON AN ON RAMP TO THE INTERSTATE. I ONCE AGAIN PRESSED FIRMLY ONTHE GAS PEDEL TO BE ABLE TO MEGER INTO TRAFFIC AND QUICKLY GET UP TO SPEED. WHILE DOING SO, THE CAR ACTED THE SAME WAY. IT WAS LIKE IT WAS IN NEUTRAL. I WAS ONCE AGAIN ALMOST HIT BY SEVERAL CARS. I CALLED FIAT IN PORTLAND AND DEMANDED THEY LOOK AT THE CAR. AT FIRST THEY COULD'NT GET ME IN AS THEY WERE OVER BOOKED. I EXPLAINED THAT I HAVE SURGERY IN MASS. ON FRIDAY THE 11TH AND I CANNOT DRIVE THIS CAR ON A FOUR LANE HIGHWAY. I FEEL EXTREMELY UNSAFE IN THIS VEHICLE. I HAVE MANY OTHER MECHANICAL PROBLEMS THAT THEY ARE LOOKING INTO AS WELL. THIS IS THE WORST CAR THAT I HAVE EVER PURCHACED. I HAVE ALSO CONTACTED FIAT USA.
NHTSA ODI #10762805
1,045 miles · Aug 24, 2015
EnginePower Train
TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING AT APPROXIMATELY 30 MPH, THE TRANSMISSION TEMPERATURE GAUGE WARNING LIGHT ILLUMINATED AND A VOICE ACTIVATED INDICATING THAT THE CLUTCH WAS OVERHEATING AND WARNED THE CONTACT TO PARK THE VEHICLE IMMEDIATELY. IN ADDITION, THE CONTACT STATED THAT WHEN THE VEHICLE WAS PARKED IN VAR…
Read full complaint
TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE DRIVING AT APPROXIMATELY 30 MPH, THE TRANSMISSION TEMPERATURE GAUGE WARNING LIGHT ILLUMINATED AND A VOICE ACTIVATED INDICATING THAT THE CLUTCH WAS OVERHEATING AND WARNED THE CONTACT TO PARK THE VEHICLE IMMEDIATELY. IN ADDITION, THE CONTACT STATED THAT WHEN THE VEHICLE WAS PARKED IN VARIOUS WEATHER CONDITIONS, THE SHIFT LEVER FAILED TO SHIFT OUT OF THE PARK POSITION. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TOWED TO A DEALER, WHERE IT WAS INSPECTED BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 1,045.
NHTSA ODI #10759002
Mileage unknown · Jul 26, 2015
EngineFuel/propulsion SystemPower Train
I HAD MY RADIO REPLACED AT THE DEALERSHIP BECAUSE THE SCREEN WAS HAVING SOME DISTORTION ISSUES AND ALSO IT WAS CREATING A LOT OF HEAT,SO IT WAS REPLACED AND NOW IT'S STARTING TO SHORT OUT AND THEY CANT SEEM TO FIGURE OUT WHY ITS DOING IT! THE VOLUME GOES UP AND DOWN ONCE IN AWHILE BY ITSELF AND THEY CAN'T SEEM TO FIGURE THAT OUT…
Read full complaint
I HAD MY RADIO REPLACED AT THE DEALERSHIP BECAUSE THE SCREEN WAS HAVING SOME DISTORTION ISSUES AND ALSO IT WAS CREATING A LOT OF HEAT,SO IT WAS REPLACED AND NOW IT'S STARTING TO SHORT OUT AND THEY CANT SEEM TO FIGURE OUT WHY ITS DOING IT! THE VOLUME GOES UP AND DOWN ONCE IN AWHILE BY ITSELF AND THEY CAN'T SEEM TO FIGURE THAT OUT EITHER! ALSO MY WIFE HAS BEEN EXPERIENCING A LACK OF POWER WHEN SHE'S DRIVING AND THE VEHICLE WILL NOT GO PAST 50MPH,AND THEN IT STARTS TO SHAKE PRETTY BAD! SHE HAS TO PULL OVER AND SHUT THE CAR OFF WAIT 2 MINUTES AND THAN TURN IT BACK ON AND THAN IT'S FINE! AND LASTLY WHEN I SIT AT A TRAFFIC LIGHT I START TO SMELL SOMETHING BURNING COMING FROM THE ENGINE AND I PULL OVER TO INSPECT THE ENGINE AND NOTHING.. I CALLED THE DEALERSHIP AND THE LADY TOLD ME IT'S THE TRANSMISSION BURNING BECAUSE I HAVE THE AUTO MANUAL SHIFTER MODEL AND THAT'S WHY IT DOES IT AND IT IS NORMAL! I REALLY DON'T THINK IT'S NORMAL AT ALL? THE LADY AT THE SERVICE COUNTER TOLD ME THAT THIS MODEL REALLY TOOK OFF IN ITALY BUT NOT HERE IN THE STATES! SO I GUESS I BOUGHT A LEMON I TOLD HER AND ALL SHE SAID WAS SHE WAS SORRY!! I HAVE SO MUCH TROUBLE AT THIS DEALERSHIP BECAUSE I HAVE TO PROVE SOMETHING IS ALWAYS WRONG WITH MY CAR!!!
NHTSA ODI #10743540
5,492 miles · Jul 13, 2015
Power Train
I'VE HAD TROUBLE WITH THE CAR WHEN PULLING AWAY FROM THE CURB WITH THE TRANSMISSION NOT ENGAGING OR SAYING "GEAR IS NOT AVAILABLE" WHEN MOVING FROM DRIVE TO REVERSE/NEUTRAL. USUALLY IT WILL DO IT ONCE AND I CAN TURN OFF THE CAR AND BACK ON AND IT GIVES ME AN ENGINE WARNING LIGHT AND THE CAR IS DRIVABLE. IN THE PAST MONTH IT'S …
Read full complaint
I'VE HAD TROUBLE WITH THE CAR WHEN PULLING AWAY FROM THE CURB WITH THE TRANSMISSION NOT ENGAGING OR SAYING "GEAR IS NOT AVAILABLE" WHEN MOVING FROM DRIVE TO REVERSE/NEUTRAL. USUALLY IT WILL DO IT ONCE AND I CAN TURN OFF THE CAR AND BACK ON AND IT GIVES ME AN ENGINE WARNING LIGHT AND THE CAR IS DRIVABLE. IN THE PAST MONTH IT'S DONE THE 'GEAR NOT AVAILABLE' WHILE MOVING AROUND 25-30 MPH ON CITY STREETS. I'VE HAD TO PULL OFF TO A SIDE STREET AND TURN OFF/RESTART THE CAR TO GET THE GEARS BACK. I HAVE VIDEO OF THE MOST RECENT EVENT. I'D TAKEN THE CAR TO THE DEALER SERVICE AND THEY COULD NOT REPLICATE THE SITUATION. I'VE VIDEO'D THE DASH DURING THE MOST RECENT EVENT(S) ON JULY 12 AT 4:44 AND 4:47 PM. FOR THE 4:44 PM I WAS PULLING AWAY FROM THE CURB. FOR THE 4:47 I WAS MOVING ALONG A CITY STREET AT 20 MPH. I HAVE CONTACTED THE DEALER SERVICE AGAIN AND I WILL BE PROVIDING THEM VIDEO OF THE DASH AS I TRIED TO CHANGE GEARS AND RESTART THE CAR. *TR
NHTSA ODI #10733582
16,000 miles · Jul 6, 2015
Power TrainSteering
TL* THE CONTACT OWNS A 2014 FIAT 500. THE CONTACT STATED THAT THE WHEN THE ENGINE WAS STARTED, THE VEHICLE FAILED TO MOVE FORWARD OR IN REVERSE. THE VEHICLE WAS TAKEN TO THE DEALER AND THE COMPUTER CODES WERE RESET, HOWEVER, THE FAILURE RECURRED. THE VEHICLE THEN BEGAN TO MOVE IN REVERSE WHEN THE GEAR WAS IN THE DRIVE POSITION. …
Read full complaint
TL* THE CONTACT OWNS A 2014 FIAT 500. THE CONTACT STATED THAT THE WHEN THE ENGINE WAS STARTED, THE VEHICLE FAILED TO MOVE FORWARD OR IN REVERSE. THE VEHICLE WAS TAKEN TO THE DEALER AND THE COMPUTER CODES WERE RESET, HOWEVER, THE FAILURE RECURRED. THE VEHICLE THEN BEGAN TO MOVE IN REVERSE WHEN THE GEAR WAS IN THE DRIVE POSITION. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TRANSMISSION CONTROL WAS REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 16,000.
NHTSA ODI #10732235
8,400 miles · Jun 19, 2015
Power Train
I BOUGHT THIS CAR BRAND NEW IN JUNE 2014 WITH 3 MILES ON IT AND ABSOLUTELY LOVED IT. WHILE SITTING IN A DRIVE THRU ONE DAY, THIS WHITE SMOKE CAME OUT FROM UNDER THE HOOD AND THE SMELL WAS AWFUL. I HAD NO IDEA WHAT WAS GOING ON SINCE NO LIGHT INDICATORS LIT UP ON THE DASH BOARD. I LEFT THE DRIVE THRU AND PROBLEM SEEMED TO STOP…
Read full complaint
I BOUGHT THIS CAR BRAND NEW IN JUNE 2014 WITH 3 MILES ON IT AND ABSOLUTELY LOVED IT. WHILE SITTING IN A DRIVE THRU ONE DAY, THIS WHITE SMOKE CAME OUT FROM UNDER THE HOOD AND THE SMELL WAS AWFUL. I HAD NO IDEA WHAT WAS GOING ON SINCE NO LIGHT INDICATORS LIT UP ON THE DASH BOARD. I LEFT THE DRIVE THRU AND PROBLEM SEEMED TO STOP SO I THOUGHT NOTHING MORE ABOUT IT. THE OTHER DAY, AGAIN WHILE SITTING IN A DRIVE THRU, WHITE SMOKE POURS OUT FROM UNDER CAR, CAR SHUTTERS, THEN DASH BOARD LIGHTS UP AND CAR DIES. I AM LEFT FREAKING OUT IN A DRIVE THRU ALONE WITH A DEAD SMOKING CAR WHICH HAD TO BE PUSHED OUT BY 2 HELPFUL EMPLOYEES. TOWED TO THE DEALERSHIP, I WAS INFORMED THAT YOU CAN'T JUST SIT IN TRAFFIC WITH THIS CAR, YOU HAVE TO PUSH THE BREAK PEDAL HARD TO RELEASE THE CLUTCH FROM SPINNING AND CAUSING FRICTION. THE FRICTION IN STOP AND GO TRAFFIC WILL CAUSE OVERHEATING AND STALLING OF THE VEHICLE... UM HELLO, THIS IS NOT SAFE. I LIVE IN ORLANDO FLORIDA, STOP AND GO TRAFFIC CAPITAL. I HAVE 8400 MILES ON THIS CAR AND NOW FACED WITH THE DILEMMA OF GETTING RID OF THIS FIRE TRAP WAITING HAPPEN WITH MYSELF AND CHILD IN THE CAR, OR JUST KEEP IT AND PRAY IT DOES DIE IN THE MIDDLE OF THE INTERSTATE AND I AM KILLED TRYING TO PUSH IT OFF THE ROAD. I WILL NEVER BUY THIS BRAND AGAIN, NOR WILL I SUPPORT ANY "FIXES" THEY SAY WILL HELP. THE COMPANY KNOWS THEY MADE A MISTAKE AND COULD COST LIVES, THIS IS WHY IT IS NOT OFFERED IN THE NEW 2015 500L OR THE NEW 2016 500X. I AM GETTING RID OF THIS DEATH TRAP, BUT NOT UNTIL I BUG THE HELL OUT OF THE CORPORATION FOR SELLING FAULTY PRODUCTS TO THE PUBLIC AND KNOWING THE ISSUES AND RISK THEY HAVE CAUSED.
NHTSA ODI #10726301
12,500 miles · Jun 11, 2015
Power Train
THIS IS MY THIRD COMPLAINT AND I HAVE YET TO GET ANY FEEDBACK FROM YOU ALL. FIAT USA AND THE DEALERSHIPS ARE AT ODDS OVER THE CLUTCH ISSUE. FIAT USA TELLS YOU TO SCHEDULE A SERVICE APPT AND THE DEALERSHIPS TELL YOU THAT THIS IS A NORMAL COMPONENT OF THE VEHICLE, THAT IT IS NORMAL MIND YOU FOR THE VEHICLE, ONLY A YEAR OLD, TO SMO…
Read full complaint
THIS IS MY THIRD COMPLAINT AND I HAVE YET TO GET ANY FEEDBACK FROM YOU ALL. FIAT USA AND THE DEALERSHIPS ARE AT ODDS OVER THE CLUTCH ISSUE. FIAT USA TELLS YOU TO SCHEDULE A SERVICE APPT AND THE DEALERSHIPS TELL YOU THAT THIS IS A NORMAL COMPONENT OF THE VEHICLE, THAT IT IS NORMAL MIND YOU FOR THE VEHICLE, ONLY A YEAR OLD, TO SMOKE AND STALL OUT DUE THE CLUTCH OVERHEATING AT ANYTIME IN HEAVY TRAFFIC OR THEY TELL YOU TO PUT THE CAR IN NEUTRAL IN TRAFFIC, OR PULL OVER AND POP THE HOOD TO LET VEHICLE COOL DOWN, NEITHER OF WHICH IS VERY SAFE, FEASIBLE OR PRACTICAL. THIS IS NOT NORMAL, THIS IS UNACCEPTABLE AND A VERY HAZARDOUS DEFECT. I WANT MY MONEY BACK OR ANOTHER MODEL OF VEHICLE. I WOULD APPRECIATE YOUR ASSISTANCE AND FEEDBACK PLEASE. PREVIOUS ODI #S 10723909 AND 10693082.
NHTSA ODI #10724725
12,500 miles · Jun 8, 2015
Power Train
I AM REPORTING A SECOND INCIDENT, THE FIRST WAS MARCH 2015 ODI #10693082, OF THE CLUTCH OVERHEATING AND MY VEHICLE STALLING OUT, THIS TIME IT WAS IN THE MIDDLE OF F STREET DOWNTOWN DC ON A FRIDAY NIGHT. I WAS SITTING IN TRAFFIC AND ATTEMPTED TO MAKE A THREE POINT TURN WHEN MY VEHICLE STALLED OUT WITH NO WARNING, NO SMOKE THIS T…
Read full complaint
I AM REPORTING A SECOND INCIDENT, THE FIRST WAS MARCH 2015 ODI #10693082, OF THE CLUTCH OVERHEATING AND MY VEHICLE STALLING OUT, THIS TIME IT WAS IN THE MIDDLE OF F STREET DOWNTOWN DC ON A FRIDAY NIGHT. I WAS SITTING IN TRAFFIC AND ATTEMPTED TO MAKE A THREE POINT TURN WHEN MY VEHICLE STALLED OUT WITH NO WARNING, NO SMOKE THIS TIME, NO INDICATION THAT IT WAS OVERHEATING AND DIED IN THE MIDDLE OF MAKING A THREE POINT TURN AND WOULD NOT START AGAIN. I HAD TO BE PUSHED OUT OF THE STREET BY STRANGERS WHO ASSISTED ME AND POPPED THE HOOD SO THE VEHICLE COULD COOL DOWN. THIS CAR IS PUTTING ME IN PRECARIOUS AND DANGEROUS SITUATIONS. THE CLUTCH OVERHEATS SITTING IN TRAFFIC AND IT WILL IN TURN STALL OUT AND WON'T START AGAIN UNTIL THE CLUTCH COOLS DOWN. THIS IS A SERIOUS DEFECT AND I AM ASKING YOU ALL FOR THE SECOND TIME TO ASSIST ME IN HAVING FIAT EITHER REPLACE OR FIX THIS ISSUE IN THE 2014 FIAT 500 L. *TR
NHTSA ODI #10723909
4,000 miles · May 27, 2015
Electrical SystemPower TrainFire
TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE AT A STOP, THE ACCELERATOR PEDAL WAS DEPRESSED BUT THE VEHICLE FAILED TO ACCELERATE. THE CONTACT NOTICED SMOKE COMING FROM THE TIRES. IN ADDITION, THE CONTACT STATED THAT THE VEHICLE FAILED TO START. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAG…
Read full complaint
TL* THE CONTACT OWNS A 2014 FIAT 500. WHILE AT A STOP, THE ACCELERATOR PEDAL WAS DEPRESSED BUT THE VEHICLE FAILED TO ACCELERATE. THE CONTACT NOTICED SMOKE COMING FROM THE TIRES. IN ADDITION, THE CONTACT STATED THAT THE VEHICLE FAILED TO START. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT THE TRANSMISSION BALL BEARINGS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 4,000.
NHTSA ODI #10721710
Official recalls
3Jun 25, 2024
Chrysler (FCA US, LLC) is recalling certain 2014-2019 Fiat 500 vehicles. The tire pressure monitoring system (TPMS) warning light may not illuminate as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 138, "Tire Pressure Monitoring Systems."
Consequence & remedy
Consequence: A TPMS warning light that fails to illuminate can result in the vehicle being driven with improperly inflated tires, increasing the risk of a crash.
Remedy: Dealers will reprogram the TPMS electronic control unit module, free of charge. Owners were mailed July 11, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 80B.
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.
May 18, 2015
Chrysler (FCA US LLC) is recalling certain model year 2013-2015 Fiat 500 battery electric vehicles manufactured March 8, 2013, to March 7, 2015. The Electric Vehicle Control Unit (EVCU) of the affected vehicles may set a diagnostic trouble code (DTC) that may cause the transmission to unexpectedly shift to neutral.
Consequence & remedy
Consequence: If the vehicle unexpectedly shifts to neutral, the loss of drive could increase the risk of a crash.
Remedy: Chrysler will notify owners, and dealers will reprogram the EVCU, free of charge. The recall began June 19, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is R20.
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.