2004 Ford F-350

Fatalities reported

Owners filed 159 complaints about this vehicle with federal regulators, most often about the engine and engine cooling. It has been recalled 3 times.

When it fails
020k40k60k90k120k200k
50,047 milesMedian miles at failure

131 complaints record an odometer reading. Failures cluster around 010,000 miles.

What fails
ComponentReportsCrashesFiresInjuries
Engine and Engine Cooling23
102
Engine and Engine Cooling › Engine › Diesel15
000
Engine15
000
Electrical System11
010
Engine and Engine Cooling › Engine9
020
Vehicle Speed Control7
200
Tires7
100
Fuel System, Diesel6
000
Power Train › Automatic Transmission5
000
Steering4
103

3 safety recalls

Part 573 reports
Exterior Lighting › Brake Lights11V352000
Filed Jul 13, 201126,715 vehiclesFord Motor Company

Defect. FORD IS RECALLING CERTAIN MODEL YEAR 2011 RANGER TRUCKS BUILT FROM JANUARY 25, 2011, THROUGH APRIL 25, 2011 AT THE TWIN CITIES ASSEMBLY PLANT, AND SERVICE PARTS DISTRIBUTED TO DEALERS FOR CERTAIN 2004 THROUGH 2011 MODEL YEAR RANGER TRUCKS, 2002 THROUGH 2005 MODEL YEAR EXCURSION VEHICLES, AND 2002 THROUGH 2007 MODEL YEAR F-250, F-350, F-450, AND F-550 TRUCKS FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THE MULTI-FUNCTION SWITCH WAS SHIPPED WITH A SUBCOMPONENT (SLIDER) THAT MAY EXPERIENCE DEFORMATION. A MULTI-FUNCTION SWITCH WITH A DEFORMED SLIDER MAY MALFUNCTION CAUSING THE TURN SIGNAL, TAIL LIGHTS, HAZARD WARNING SIGNAL FLASHERS AND/OR BRAKE LIGHTS NOT TO ACTIVATE.

Risk. NON-FUNCTIONING LIGHTS COULD INCREASE THE RISK OF A CRASH.

Remedy. DEALERS WILL REPLACE THE SWITCHES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 15, 2011. OWNERS MAY CONTACT FORD MOTOR COMPANY CUSTOMER RELATIONSHIP CENTER AT 1-866-436-7332.

Equipment › Electrical07E066000
Filed Aug 28, 2007175 vehiclesCequent Electrical Products

Defect. CERTAIN CEQUENT 90 DEGREE 7-WAY RIGHT ANGLE ADAPTORS SOLD BY DISTRIBUTORS IN TOW PACKAGES FOR AFTERMARKET SALES TO TOW 5TH WHEEL RV TRAVEL TRAILERS. DUE TO INCORRECT WIRING OF THE HARNESS, THE TRAILER LIGHTS MAY NOT OPERATE PROPERLY.

Risk. IF THE TRAILER LIGHTS ARE NOT WORKING PROPERLY, A VEHICLE CRASH CAN OCCUR.

Remedy. ALL OF THE DEFECTIVE TOW PACKAGES ARE STILL AT THE DISTRIBUTOR LEVEL AND HAVE NOT BEEN SOLD TO ANY CONSUMERS.

Tires04V229000
Filed May 17, 20046,415 vehiclesFord Motor Company

Defect. CERTAIN LARIAT AND KING RANCH MODEL PICKUP TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 120, "TIRE SELECTION AND RIMS FOR MOTOR VEHICLES OTHER THAN PASSENGER CARS." SOME TRUCKS WERE INADVERTENTLY EQUIPPED WITH AN INCORRECT LOAD RANGE TIRE. THIS WOULD RESULT IN INCORRECT TIRE LOAD RATINGS FOR THE STATED VEHICLE AXLE GROSS AXLE WEIGHT RATING. ALSO, THE TIRE MAY BE INFLATED ABOVE THE DOT LISTED INFLATION PRESSURE.

Risk. IF A TIRE WAS OPERATED IN AN OVER-LOADED OR OVER-INFLATED CONDITION, THE TIRE MAY RUPTURE RESULTING IN A RAPID AIR LOSS, WHICH CAN CAUSE A CRASH WITHOUT WARNING.

Remedy. DEALERS WILL INSPECT AND, IF NECESSARY, REPLACE ANY INCORRECT LOAD RANGE TIRES. ADDITIONALLY, IF ANY TIRE REQUIRED REPLACEMENT, IT IS RECOMMENDED THAT THE WHEEL LUG NUT TORQUE BE CHECKED WITHIN 500 MILES AFTER ANY TIRE REPLACEMENT. OWNER NOTIFICATION BEGAN ON MAY 21, 2004. OWNERS SHOULD CONTACT. FORD AT 1-800-392-3673.

What owners reported

Newest filings
Electrical System
Filed Apr 18, 2025190,019 milesSD

The contact owns a 2004 Ford F-350. The contact stated that while driving approximately 76 MPH with his wife in the front passenger seat, the vehicle shuddered uncontrollably and stalled. The contact and his wife were concerned for their safety. There was no warning light illuminated. The contact was able to regain control of the vehicle and pulled over to the side of the road. The vehicle failed to restart and was towed to the residence. The contact stated that as an independent mechanic, he used a code reader to retrieve diagnostic trouble codes for the fuel control module wiring harness failure. The contact related to the failure to NHTSA Campaign Number: 05V270000 (Electrical System). The contact stated that the fuel control module wiring harness failure had caused warning lights to fail to illuminate as needed. The dealer was notified of the failure and informed the contact that the vehicle had previously been repaired under the recall. The manufacturer was notified of the failure and informed the contact that an elbow vacuum tubing connector was previously replaced under the recall; however, the contact advised the manufacturer that the recall involved replacing the entire fuel control module wiring harness. The manufacturer informed the contact that the recall was already marked completed and no further repairs could be covered. The contact stated that the dealer and the manufacturer had failed to honor the recall repair. The vehicle was not repaired. The failure milea

Engine
Filed Apr 28, 2022HI

While driving at 40-50 MPH the vehicle will lose power and then then stalls while moving leading to loss of power. The loss power of affects the power steering posing a direct threat for an auto collision due to the difficult in steering the moving vehicle into an emergency lane. Avoided several accidents with this truck. Once it is stalled it can take numerous times to restart the vehicle. This issue seems to occur more on slopes going up hill. This does not seem to occur as often going downhill or on areas with no incline. Currently vehicle has 126,931.8 miles on it. Regularly serviced and otherwise running fine.

Tires
Filed Sep 24, 2021WI

The contact owns a 2004 Ford F-350 equipped with Cooper Tires, Tire Line: Discover AT3, Tire size: 265/75/R16, DOT Number: UPWM1M11718M16L. The contact stated that while driving 65 MPH, the rear driver’s side tire had a sidewall blowout. The contact stated that all four tires had sidewall blowouts months apart. The tire blowouts had damaged the rims. The contact replaced the front driver’s, passenger’s, and rear driver’s side tire with the spare after each blowout. The dealer was made aware of the failure and replaced the rear passenger’s side tire. The manufacturer was made aware of the failure and the rear driver’s side rim, rear driver’s and front passenger’s side tire were sent to the manufacturer. The failure mileage was not available.

Engine
Filed Oct 20, 2020170,000 milesTX

MY TRUCK HAS MAJOR ENGINE DAMAGE BOUGHT IT AND THREE DAYS LATER THE EGR WENT OUT THEN NEXT THING YOU KNOW I GOT A BLOWN MOTOR

Fuel System, Gasoline
Filed Sep 14, 2020332,000 milesIL

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE SUDDENLY LOSS MOTIVE POWER AND STALLED WITHOUT WARNING. THE CONTACT RESTARTED THE VEHICLE HOWEVER, THE FAILURE RECURRED. UPON INSPECTION, THE CONTACT DISCOVERED THE FUEL FILTER WAS COVERED WITH SILVER DEBRIS. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. AN UNKNOWN DEALER WAS CONTACTED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 332,000.

Power Train
Filed Jul 16, 2020220,000 milesTX

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING AT 70 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT PULLED THE VEHICLE OFF TO THE SIDE OF THE ROAD AND MADE MULTIPLE ATTEMPTS TO RESTART THE VEHICLE HOWEVER, THE VEHICLE FAILED TO RESTART. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE THEY DIAGNOSED THE VEHICLE WITH A DEFECTIVE FUEL INJECTION CONTROL MODULE. CASA FORD (5815 MONTANA AVE, EL PASO, TX 79925) AND THE MANUFACTURER WERE CONTACTED AND INFORMED OF THE FAILURE. THE CONTACT WAS INFORMED THAT THE VEHICLE WAS NOT SUBJECTED TO A RECALL. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 220,000.

Engine
Filed Apr 24, 2019200,000 milesIL

TL* THE CONTACT OWNS A 2004 FORD F-350. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SUDDENLY SHUT OFF. ALSO, WHILE IDLING, THE ENGINE RPMS REMAINED VERY HIGH AND THE VEHICLE WOULD ATTEMPT TO SURGE FORWARD. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO REPLACED THE ICP SENSOR AND INJECTOR CONTROL SENSOR, BUT THE FAILURES CONTINUED. THE MANUFACTURER AND LOCAL DEALER WERE NOT NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS 200,000.

Service BrakesCrash1 injured
Filed Mar 19, 2019268,000 milesCO

TAKATA INFLATORS; MY VEHICLE STARTED ALL TYPES OF PROBLEMS INTERMITTENT ONES THAT COST ME SEVERAL THOUSAND DOLLARS NEVER FIXING THE PROBLEM THIS IS WERE IT ALL BEGAN,,.MY VEHICLE DIED GOING UP FAIRLY STEEP HILL TO GRAVE YARD, IT IMMEDIATELY ROLLED BACK SHOVING A FAMILY MEMBERS VEHICLE DOWN HILL A WAYS UNTIL THEY TURNED AWAY FROM THE CLIFF EDGE LEAVING ME ALL ALONE.UNTIL GOING THROUGH A RUN OFF DITCH STOPPING OVER IT INTO 2 TREES. I HAD NO STEERING NO BRAKES AND THANK GOD THE TREES WERE THERE TO STOP MY TRUCK IF NOT THEIR WAS A 100 FOOT CLIFF NEXT.. I KNOW NOTHING ABOUT RECALLS OR SUCH I JUST TRIED TO FIX MY TRUCK PROBLEM BY PROBLEM AS SYMPTOMS CAME ON I HAVE ALL TYPES OF RECENT RECEIPTS THAT ALL CAME FROM SILVERISH DARK MAYBE EVEN GRAY MATTER STUFF IN THE TANK. WHEN I GET MY BANK STATEMENT I WILL ITEMIZE ALL AND SUBMIT THEM WHEN FINAL COST IS OVER.

Steering
Filed Oct 3, 2017150,000 milesWA

TL* THE CONTACT OWNS A 2004 FORD F-350. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT PLACED THE GEAR SHIFTER INTO NEUTRAL AND WAS ABLE TO RESTART THE VEHICLE. IN ADDITION, THE STEERING WHEEL BECAME DIFFICULT TO MANEUVER. WHILE DRIVING VARIOUS SPEEDS, THE BATTERY, OIL PRESSURE AND CHECK ENGINE WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FUEL INJECTION CONTROL MODULE FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THE CONTACT THAT THEY DID NOT HAVE A RECORD OF THE VEHICLE BEING SERVICED. NO FURTHER ASSISTANCE WAS OFFERED. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.

Fuel System, Diesel › Storage › Tank Assembly
Filed Sep 7, 201782,000 milesMI

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT THE FUEL TANK STRAP WAS SEVERELY CORRODED AND THE FUEL TANK DETACHED FROM THE VEHICLE. THE CONTACT STATED THAT THIS WAS THE SECOND TIME THE FAILURE OCCURRED. AN UNKNOWN FORD DEALER WAS CONTACTED AND REFERRED THE CONTACT TO FORD USA. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THE CONTACT THAT THERE WAS NO RECALL AND HE WOULD BE RESPONSIBLE FOR THE REPAIR COST. THE FAILURE MILEAGE WAS APPROXIMATELY 82,000. UPDATED 11/02/17*LJ *TT

Structure › Body
Filed Jul 25, 2017140,590 milesVT

TL* THE CONTACT OWNS A 2004 FORD F-350. WHILE THE VEHICLE WAS BEING SERVICED BY AN INDEPENDENT MECHANIC, IT WAS OBSERVED THAT THE DRIVER AND PASSENGER SIDE INNER ROCKER PANELS HAD SEVERE CORROSION, FAILED, AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE FRAME WAS CRACKED. THE CONTACT TOOK THE VEHICLE TO THE LOCAL DEALER (FORMULA FORD, 4318 MIDDLE RD, RUTLAND, VT, 05701) WHERE IT WAS CONFIRMED THAT THE FRAME WAS FRACTURED, BUT THEY WOULD NOT REPAIR THE VEHICLE. THE FRAME WAS REPAIRED. THE CONTACT GOT THE DEPARTMENT OF MOTOR VEHICLES INVOLVED; THEREFORE, THE DEALER PAID SOME OF THE REPAIR COST TO BE WELDED BY THE CONTACT'S INDEPENDENT PROFESSIONAL WELDER. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS APPROXIMATELY 140,590.

Vehicle Speed Control
Filed Apr 23, 201790,000 milesCA

SPEED CONTROL DOES NOT DISENGAGE WHEN HITTING THE BRAKES. YOU MUST SLOW THE TRUCK DOWN BY SEVERAL MILES PER HOUR BEFORE THE SYSTEM WILL DISENGAGE. (PUSH HARD AND LONG). THE PROBLEM WILL GO AWAY FOR A PERIOD OF TIME IF YOU PREFORM AN EMERGENCY STOP THAT CAUSES THE ANTI-LOCK BRAKE SYSTEM TO ACTIVATE. THIS WILL CURE THE ISSUE FOR AWHILE. BUT WITH NORMAL BRAKING THE PROBLEM WILL RETURN WITH IN SEVERAL DAYS.

Engine
Filed Apr 11, 2017133,307 milesCA

TL* THE CONTACT OWNS A 2004 FORD F-350. WHILE DRIVING APPROXIMATELY 20 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT COASTED THE VEHICLE TO THE SHOULDER TO A COMPLETE STOP. THE VEHICLE WAS STARTED NORMALLY, BUT STALLED AGAIN THE SAME AFTERNOON. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN NUMBER: 05V270000 (ENGINE). THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 133,307.

Vehicle Speed ControlCrash
Filed Mar 26, 201749,000 milesOR

WE HAVE HAD FOUR SEPARATE INCIDENTS INVOLVING UNINTENDED ACCELERATION WITH OUR 2004 FORD F350. WHEN APPLYING THE BRAKES, THE VEHICLE SUDDENLY ACCELERATES. IT HAS HAPPENED TWICE GOING DOWN OUR DRIVEWAY, ONCE WHEN DRIVING IN CITY TRAFFIC, AND ONCE WHEN WE WERE PARKING AT A REST STOP. THE VEHICLE WAS DRIVING AT LOW SPEEDS IN ALL OF THESE INSTANCES. IN THE MOST RECENT INCIDENT, THE VEHICLE SUDDENLY ACCELERATED, JUMPED THE CURB AND STRUCK A TRASH CAN AT A REST STOP. THANKFULLY NO ONE WAS IN FRONT OF OUR VEHICLE AS THEY COULD HAVE BEEN KILLED. THE VEHICLE ALSO REAR ENDED ANOTHER VEHICLE IN ANOTHER INCIDENT. THIS HAS HAPPENED THREE TIMES WHEN MY HUSBAND WAS DRIVING AND ONCE WHEN I WAS DRIVING. AFTER THE MOST RECENT INCIDENT WE GOOGLED THIS AND FOUND THERE ARE NUMEROUS CLASS ACTION LAWSUITS AGAINST FORD FOR THIS ISSUE, AND THAT OUR YEAR VEHICLE (2004) HAS ONE OF THE HIGHEST INCIDENT RATES.

Electrical System
Filed Mar 9, 2016100,000 milesTN

TL* THE CONTACT OWNS A 2004 FORD F-350. WHILE DRIVING THE VEHICLE, IT EXPERIENCED A COMPLETE LOSS OF POWER. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE WIRING HARNESS WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. PRIOR TO THE FAILURE, THE VEHICLE WAS REMEDIED UNDER NHTSA CAMPAIGN NUMBER: 07E066000 (EQUIPMENT). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 100,000.

Electrical System
Filed Mar 9, 201683,000 milesTN

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE WOULD SUDDENLY SHUT OFF AND ON SEVERAL OCCASIONS WOULD NOT START. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DETERMINED THAT THE FUEL INJECTION CONTROL MODULE WIRE HARNESS NEEDED TO BE REPLACED. THE CONTACT NOTIFIED THE MANUFACTURER, WHO EXPLAINED THAT THE HARNESS WAS REPLACED IN 2005 UNDER NHTSA CAMPAIGN NUMBER: 05V270000 (ELECTRICAL SYSTEM). THE FAILURE MILEAGE WAS 83,000.

Service Brakes
Filed Aug 13, 201591,000 milesMD

WHILE APPLYING BRAKES IN AN ATTEMPT TO STOP, THE BRAKE PEDAL UNEXPECTEDLY WENT DIRECTLY TO THE FLOOR, THUS DISALLOWING THE TRUCK TO STOP. THE PEDAL WAS ABLE TO BE PUMPED,UP ENOUGH IN ORDER TO STOP THE TRUCK, BUT ONLY ONE TIME. ATTEMPTS TO PUMP THE PEDAL AND INCREASE THE PRESSURE ENOUGH FOR FUTURE ATTEMPTS AT STOPPING THE TRUCK WERE UNSUCCESSFUL. INSPECTION OF THE VEHICLE BY CERTIFIED MECHANICS REVEALED RUST BUILDUP ON/NEAR A WEAK SPOT ON ONE OF THE BRAIDED, FLEXIBLE FRONT BRAKE LINES WHICH HAD BURSTED, VIRTUALLY MAKING THE BRAKES USELESS BY DISALLOWING PRESSURE TO BE BUILT UP IN THE SYSTEM. A FURTHER INSPECTION OF THE SYSTEM REVEALED A SECOND BRAIDED, FLEXIBLE BRAKE LINE THAT WAS SHOWING SIGNS OF RUST BUILDUP AND EMINENT FAILURE. THE POINT OF FAILURE ON BOTH LINES WAS THE FLEXIBLE, BRAIDED SECTION ITSELF, JUST ADJACENT TO WHERE IT CONNECTED WITH THE PRE-MOLDED PORTION OF EACH LINE.

Steering
Filed Apr 28, 2015100,000 milesNV

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 40 MPH, THE POWER STEERING FAILED. THE FAILURE RECURRED SEVERAL TIMES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 100,000.

Engine
Filed Feb 10, 2015210,000 milesNM

TL*THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH, THE VEHICLE STALLED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DISCOVERED THAT OIL WAS LEAKING FROM THE HEAD GASKET. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 210,000.

Engine
Filed Nov 13, 201437,237 milesTX

TL* THE CONTACT OWNS A 2004 FORD F-350. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 15 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 37,237.

20 of 159 complaints, reproduced as filed.

Across model years

Worst on record: 1999
YearComplaintsRecallsFiresDeathsAssessment
201491010Routine
201376140Routine
2012149420Routine
2011136430Routine
20100100Routine
200928300Routine
2008131990Routine
200736510Routine
2006145641Fatalities reported
2005114530Routine
2004 — this page159352Fatalities reported
200390380Routine
2002116372Fatalities reported
20011606111Fatalities reported
2000304590Above average
19994131393Fatalities reported
199812102Fatalities reported
19971554110Routine
19961304150Routine
19951343132Fatalities reported
199495760Routine
1993101950Routine
199252751Fatalities reported
199131740Routine
199039731Fatalities reported

Compare every F-350 year →

Reading this record

2 deaths reported in complaints filed with NHTSA.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Recall repairs are free for as long as the recall stands. Check whether a specific car still has open work at NHTSA's VIN lookup.

Most recent recall on file: Jul 13, 2011. Source: NHTSA Office of Defects Investigation.