NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
196 reportsClear category filterMileage unknown · Mar 11, 2026
Electrical SystemEngineFuel/propulsion System
When I'm driving on the freeway. I could be on flatland and it will stall, I could be going down a hill and it stalls, I could be on a regular road, turning a corner, hitting a bump. And it stalls when I'm on the freeway, I have to get over very scary happens all the time when It happens I coast, I put it into park, i turn it of…
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When I'm driving on the freeway. I could be on flatland and it will stall, I could be going down a hill and it stalls, I could be on a regular road, turning a corner, hitting a bump. And it stalls when I'm on the freeway, I have to get over very scary happens all the time when It happens I coast, I put it into park, i turn it off, and it restarts immediately every time. This is constantly happening. IHave a video and picture but it will not upload on this.But it says hell descending control fail
NHTSA ODI #11723535
Mileage unknown · Nov 6, 2025
EngineUnknown Or Other
Engine over heat warning while driving and I checked there is a coolant leakage.
NHTSA ODI #11697807
170,000 miles · Oct 24, 2025
Engine
The contact owns a 2014 Ford Explorer. The contact stated that while the vehicle was stopped, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, the vehicle stalled. No warning light was illuminated. The contact was able to restart the vehicle. The contact st…
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The contact owns a 2014 Ford Explorer. The contact stated that while the vehicle was stopped, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, the vehicle stalled. No warning light was illuminated. The contact was able to restart the vehicle. The contact stated that on a separate occasion, while driving at various speeds, the vehicle jerked and then the engine stalled. After several attempts, the vehicle was restarted. The check engine warning light was illuminated. The contact stated that on a separate occasion, when the contact was able to restart the vehicle, the failure recurred after driving a short distance. The contact stated that the failure persisted. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 170,000.
NHTSA ODI #11695502
Mileage unknown · Sep 27, 2025
EngineUnknown Or Other
Engine stopped working I wanna know if there is a warranty
NHTSA ODI #11690130
Mileage unknown · May 18, 2025
EngineSuspensionUnknown Or Other
Noticing a problem with the steering and wheel suspension that is affecting other Ford explorers between 2018 and 2025. Engine oil blow by. Causing oil to leak and ending up under the carriage and on the back of the vehicle. Rear camera problems.
NHTSA ODI #11661662
Mileage unknown · Mar 11, 2025
EngineWheels
Vehicle has code C0063-64ABS. Also has a problem with the restraint control module and ABS module causing the front tires to lock and make the car slide. I was about to get into a car crash on Oct 24,2024 because the cars front tires locked and just slide from one side to other the steering wheel went loose and I wasn't able to …
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Vehicle has code C0063-64ABS. Also has a problem with the restraint control module and ABS module causing the front tires to lock and make the car slide. I was about to get into a car crash on Oct 24,2024 because the cars front tires locked and just slide from one side to other the steering wheel went loose and I wasn't able to control the car I took it to ford dealership where they told me that it has the code that appears at the beginning of this message
NHTSA ODI #11647641
Mileage unknown · Nov 21, 2024
Engine
Making a right turn I was startled by a vehicle running a red light. Front wheel passenger side cleared the curb. Right rear tire jumped the curb jolted back to ground. I looked at tire pressure gauges and no leaks were evident. Being on a single lane road I continued driving looking for a turn in place after traveling about a q…
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Making a right turn I was startled by a vehicle running a red light. Front wheel passenger side cleared the curb. Right rear tire jumped the curb jolted back to ground. I looked at tire pressure gauges and no leaks were evident. Being on a single lane road I continued driving looking for a turn in place after traveling about a quarter of a mile an engine rattle developed and there was faint smell of smoke. I traveled another block and turned into a dollar general parking lot. The entrance was on an incline and the car stopped. I had just purchased a new battery a week before and had an oil change about 3 weeks before. The car refused to start. I called triple A and had it towed to dealer. They looked at car and could not come up with a rational reason and doubted car stopped because of violent rear contact with curb at right rear wheel was cause of engine seizing. I called USAA my insurance company their investigating agent agreed. My car is serviced at this dealer and I follow all of the maintenance guidelines I have the records as well as dealer. The car has 125,000 miles and has been well maintained. I am curious if there are any other reports this has happened with 2014 Ford Explorer or any other vehicle. I find it hard to accept such a violent jolt of the running engine did not cause something to fall loose on the running engine. The dealer and appraiser found the car oil full and in pristine condition. There was no frame damage.Turning the crank towards rear they hear metal falling into oil pan. Your thoughts?
NHTSA ODI #11626686
100,000 miles · Oct 1, 2024
EngineStructureSuspension
The contact owns a 2014 Ford Explorer. The contact stated that the front passenger’s side door panel had started to detach from the body of the vehicle. The vehicle was taken to a dealer where the contact was informed that there were no recalls on the VIN and the contact was provided an estimate for the repair. The vehicle was n…
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The contact owns a 2014 Ford Explorer. The contact stated that the front passenger’s side door panel had started to detach from the body of the vehicle. The vehicle was taken to a dealer where the contact was informed that there were no recalls on the VIN and the contact was provided an estimate for the repair. The vehicle was not repaired. The contact stated that while driving at highway speeds, there was an abnormal whining sound coming from the vehicle. There was no warning light illuminated. The vehicle was taken to the dealer where the contact was informed that the rear wheel bearing needed to be replaced. The dealer repaired the vehicle. The contact stated that the check engine warning light later was illuminated. The vehicle was taken back to the dealer where the contact was informed that the catalytic converter needed to be replaced. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN. The vehicle was not repaired. The failure mileage was approximately 100,000.
NHTSA ODI #11617492
127,000 miles · Aug 6, 2024
Electrical SystemEngineVisibility
The contact owns a 2014 Ford Explorer. The contact stated that the security light was illuminated, and the battery was drained. The vehicle was taken to the local dealer, where it was diagnosed that the security panel needed to be replaced. The vehicle was repaired, but the failure recurred. While driving, the lights failed to t…
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The contact owns a 2014 Ford Explorer. The contact stated that the security light was illuminated, and the battery was drained. The vehicle was taken to the local dealer, where it was diagnosed that the security panel needed to be replaced. The vehicle was repaired, but the failure recurred. While driving, the lights failed to turn on, and the horn was inoperable. The vehicle was taken back to the local dealer, where it was determined that the electrical system needed to be replaced. The vehicle was repaired. The contact stated that there was no longer a dinging sound when the doors were ajar. The interior lights were dim, and the horn was inoperable. The rubber trim was detaching. The moon roof failed to close. The vehicle was taken back to the local dealer, who determined that water had entered the vehicle through the sunroof and that the wires were wet. The dealer added plastic and glue to the sunroof. Additionally, the vehicle failed to start. There was an abnormal clicking sound while attempting to start the vehicle. The vehicle was taken back to the local dealer, where it was diagnosed that the compressor needed to be replaced because the compressor was clogged. The manufacturer was contacted, who opened a case. The failure mileage was approximately 127,000.
NHTSA ODI #11606756
Mileage unknown · Aug 2, 2024
Engine
VEHICLE ENGINE LIGHT CAME ON. TOOK CAR INTO MECHANIC AND FOUND OUT A CODE POINTS TO A PROBLEM WITH THE TIMING CHAIN/CAM POSITION SENSOR. PRIOR TO THE ENGINE LIGHT COMING ON CAR PREVIOUSLY HAD (2) RANSOM ISSUES THAT NOW AFTER GETTING THE DIAGNOSIS MAKES SENSE WHY THE CAR WAS AT TIMES MAKING A FLUTTER SOUND WHEN STARTING ALONG WIT…
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VEHICLE ENGINE LIGHT CAME ON. TOOK CAR INTO MECHANIC AND FOUND OUT A CODE POINTS TO A PROBLEM WITH THE TIMING CHAIN/CAM POSITION SENSOR. PRIOR TO THE ENGINE LIGHT COMING ON CAR PREVIOUSLY HAD (2) RANSOM ISSUES THAT NOW AFTER GETTING THE DIAGNOSIS MAKES SENSE WHY THE CAR WAS AT TIMES MAKING A FLUTTER SOUND WHEN STARTING ALONG WITH THE ENGINE RANDOMLY AT TIMES ACTING LIKE TO WAS GOING TO STOP RUNNING WHILE DRIVING THE VEHICLE. I TOLD FORD AND THE MECHANIC ABOUT IT PREVIOUSLY BUT THEY BOTH SAID AS LONG AS THERE'S NO ALARMS KEEP DRIVING IT. THE VEHICLE STILL DRIVES GOOD, BUT I WAS ADVISED NOT TO DRIVE IT UNTIL REPAIRS MADE. THE REPAIR IS $4,000.00 AND PUTTING THAT KIND OF MONEY INTO A VEHICLE THAT IS CURRENTLY VALUED AT $8 TO 10K WITH 136,000 BASED OFF MY RESEARCH IS NOT PRUDENT CONSIDERING OTHER THINGS THAT WILL EVENTUALLY NEED EXPENSIVE REPAIRS. I HAVE TAKEN GOOD CARE OF THE VEHICLE ALONG WITH KEEPING UP ON ALL SERVICES. DISCUSSED WITH A COUPLE EXPERIENCED FORD MECHANICS AND THIS REPAIR IS UNFORTUNATELY VERY COMMON. I BOUGHT THE EXTENDED WARRANTY WHEN THE CAR WAS NEW FOR YOUR INFORMATION. I HOPE FORD CAN STAND BEHIND THIS MECHANICAL FAILURE THAT APPARENTLY IS A KNOW ISSUE AND ACCOMMODATE ME FOR MY LOSS OF EQUITY IN A VEHICLE THAT SHOULD NOT BE HAVING THIS KIND OF WELL KNOWN BREAKDOWN. 1. VEHICLE IS AVAILABLE FOR INSPECTION 2. SAFETY AT RISK WHEN ENGINE LOSES POWER AND ALMOST STOPS RUNNING 3. YES, YESTERDAY I WAS AT THE LOCAL FORD DEALERSHIP MET THERE TOP "HEAVY END" MECHANIC WHO WAS VERY FAMILIAR WITH THE PROBLEM ALONG WITH (2) INDEPENDENT EXPERT MECHANICS FAMILIAR WITH THE DIAGNOSIS. 4. THE MANUFACTURER YESTERDAY SAW THE VEHICLE, AFTER TALKING TO THE HEAD MECHANIC, BASED OFF THE CODE AND SYSTEMS I DECIDED IT WAS NOT PRUDENT TO THROW MONEY AWAY ON GETTING AN OFFICIAL DIAGNOSIS BASED OFF MY COMFORT LEVEL FROM THE DISCUSSIONS WITH THE MECHANICS. 5. YES, THE CHECK ENGINE LIGHT CAME ON AND I HAD THE CAR PROMPTLY INSPECTED BY A MECHANIC.
NHTSA ODI #11606159
Official recalls
6Jan 19, 2024
Ford Motor Company (Ford) is recalling certain 2011-2019 Explorer vehicles. The A-pillar trim retention clips may not be properly engaged, allowing the trim to detach.
Consequence & remedy
Consequence: A detached trim piece can fall off the vehicle, becoming a road hazard and increasing the risk of a crash.
Remedy: Dealers will inspect and replace the A-pillar trim as necessary, free of charge. This will be a phased campaign, with the remedy becoming available in different phases based on model years. Owner notification letters were mailed between July 18, 2024 and December 16, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S02.
Jul 15, 2021
Ford Motor Company (Ford) is recalling certain 2013-2017 Explorer vehicles originally sold, or ever registered, in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin, and the District of Columbia. Exposure to road salt can cause the cross-axis ball joint to corrode and seize, resulting in a fracture of the outboard section of the rear suspension toe link.
Consequence & remedy
Consequence: A rear toe-link fracture can result in a loss of steering control, increasing the risk of a crash.
Remedy: Dealers will inspect and replace as necessary, the cross-axis ball joint (CABJ) knuckle, and replace the rear suspension toe links, free of charge. This recall is an expansion of previous NHTSA recall numbers 16V-245, 19V-435, and 20V-675. Certain vehicles previously repaired will need to return for the new remedy. An interim notification letter notifying owners of the safety risk were mailed on September 10, 2021. Owner notification letters were mailed on March 16, 2022. Owners may contact Ford's customer service at 1-866-436-7332. Ford's number for this recall is 21S32.
Mar 12, 2021
Ford Motor Company (Ford) is recalling certain 2013-2017 Explorer vehicles originally sold, or currently registered in Connecticut, Delaware, the District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, and Wisconsin that were previously repaired under a prior recall numbers 16V-245 or 19V-435. The outboard section of a rear suspension toe link may fracture.
Consequence & remedy
Consequence: A rear toe link fracture can result in a loss of steering control, increasing the risk of a crash.
Remedy: Ford will notify owners, and dealers will inspect the cross-axis ball joint (CABJ) knuckle attached to the rear suspension toe link and replace it as necessary, free of charge. The recall began November 27, 2020. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 20S62.
Nov 10, 2020
Ford Motor Company (Ford) is recalling certain 2014-2016 Explorer, 2014-2015 Taurus and 2014 Edge vehicles equipped with 2.0L or 2.3L engines and front wheel drive. The support bracket for the front drive axle halfshaft may fail.
Consequence & remedy
Consequence: The failed bracket could result in a loss of park function which can cause unintended vehicle movement, and loss of motive power while driving which increases the risk of a crash.
Remedy: Ford will notify owners, and dealers will replace the link shaft bracket, free of charge. Parts are not currently available. Owners received an interim notification detailing safety risk December 8, 2020. A second letter will be mailed when parts become available in January 2021. The recall began February 2, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 20S63.
Jun 10, 2019
Ford Motor Company (Ford) is recalling certain 2011-2017 Explorer vehicles. The rear suspension toe links may fracture due to stress on the rear suspension.
Consequence & remedy
Consequence: A fractured rear toe link will cause a sudden change in vehicle handling and increase the risk of a crash.
Remedy: Ford will notify owners, and dealers will replace the rear suspension toe links, and inspect both rear toe link ball joints, replacing the rear wheel knuckle(s), if necessary, free of charge. The recall began June 26, 2019. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 19S17.
Apr 26, 2016
Ford Motor Company (Ford) is recalling certain model year 2014-2015 Ford Explorer vehicles manufactured January 17, 2014 to May 31, 2014. The affected vehicles may have improperly welded rear suspension toe links that may fracture.
Consequence & remedy
Consequence: A fracture of the rear suspension toe link may result in a loss of steering control, increasing the risk of a crash.
Remedy: Ford will notify owners, and dealers will replace the rear suspension toe links, free of charge. The recall began on November 18, 2016. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S18.
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
4PE23001 · Windshield Trim Molding Item Detachment
Opened Jan 27, 2023 · Closed Feb 8, 2024
Status: closed (inferred from source dates) · Structure:body:roof And Pillars
On January 27, 2023, the Office of Defects Investigation (ODI) opened PE23-001 to investigate allegations of A-pillar trim panel detachment on model year (MY) 2011-2019 Ford Explorer vehicles. At the time of opening, the office had received 164 Vehicle Owner Questionnaires (VOQs) reporting this failure. ODI has received 671 VOQs regarding this failure, including 1 alleged crash and 2 alleged injuries. Some consumers have reported that the failure occurred while they were driving at highway speeds, with the detached trim panel entering the path of travel of the vehicle behind them, requiring the driver of the following vehicle to take evasive action. It is noteworthy that motorists who experience this type of road hazard are less likely to accurately identify the subject vehicle the item detached from and report the event to the NHTSA. In its April 17, 2023 response to ODI’s information request, Ford provided 175 consumer complaints (including field reports) and 14,162 warranty claims related to A-pillar trim panel detachment. Ford relayed that the subject vehicles utilize a plastic A-pillar bracket, which is bolted to the vehicle structure during assembly. The A-pillar trim panel is attached to the bracket utilizing 7 plastic clips. Contributory factors which have been identified by Ford as leading to the subject defect include incomplete installation at the assembly plant, inadequate part stack up, damage to fasteners during installation, and failure to follow proper repair procedure during windshield replacements or other services. On January 19, 2024, Ford filed safety recall 24V-031 for MY 2011-2019 Ford Explorer vehicles to address the subject defect. In the Part 573 Safety Recall Report, Ford identified that a detached A-pillar trim panel can create a road hazard for other road users, increasing the risk of a crash. The recall remedy includes an inspection of the existing A-pillar trim panel and, if necessary, the replacement of the component. The remedy A-pillar trim panels will be installed with an additional adhesive for robustness and utilize an inspection procedure to ensure full engagement of all the retention clips during installation. In view of the recall action being taken by Ford, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
EA17002 · Exhaust Odor In Passenger Cab
Opened Jul 27, 2017 · Closed Jan 17, 2023
Status: closed (inferred from source dates) · Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe; Structure:body
During the EA17-002 investigation, the agency reviewed and analyzed reports of exhaust odors in the passenger cabins of Model Year 2011 to 2017 Ford Explorers. This investigation required an approach that incorporated knowledge and expertise from the automotive, medical, environmental health, and occupational safety fields. The agency conducted an in-depth investigation that encompassed the review of over 6,500 consumer complaints, conducting field inspections, and testing the relevant vehicles, both independently and in coordination with Ford and other entities. During the investigation, the evolution of Ford service bulletins intended to reduce the level of exhaust odors and carbon monoxide (CO) entering the occupant compartment was examined and independent tests to evaluate the effectiveness of the final Field Service Actions (FSA) for both consumer and police vehicles were conducted. As part of the investigation, the agency also examined the effects of cracked exhaust mani-cats on the measured CO levels in the vehicles and tested the FSA repairs to ensure they did not adversely impact occupant compartment CO levels due to cracked mani-cats.The investigation identified upfitting issues for Police Interceptor vehicles. Upfitting (sirens, lights, cages, auxiliary power, etc.) is typically performed by governmental fleet operations, independent repair facilities, or local Ford dealers after the sale of the new vehicle. Sealing issues caused by upfitting were responsible for the highest measured carbon monoxide levels in tested vehicles. The police FSA instructs how to inspect the quality of the vehicle upfits and how to properly seal any leaks caused by these upfits, at no cost to the police agency. Similarly, the highest CO levels measured in consumer vehicles were usually traced to sealing issues caused by rear crash damage where the repairs did not ensure sealing integrity. The most recent Ford FSA procedure for both the police (17B25) and consumer vehicles (17N03) includes an HVAC reprogramming operation. Tests by Ford and NHTSA have demonstrated a substantial reduction of CO levels due solely to the HVAC reprogramming. Other FSA repairs also demonstrated measurable contributions to CO level reductions during controlled tests.Throughout the investigation, vehicles accurately measured with higher levels of carbon monoxide were almost always affected by upfitter alterations, damage, or other causes compromising rear passenger cabin seals.NHTSA received thousands of reports alleging odors which triggered a variety of physiological responses, predominately nausea, headaches, and lightheadedness. NHTSA focused the investigation on accurately measuring vehicle CO levels, and accurately measuring carboxyhemoglobin (COHB) levels from properly administered blood tests. Using rigorous test methods to produce exhaust gas intrusion in vehicles with a properly performed FSA, occupant compartment CO levels remained below current environmental limits for CO in any environment (EPA ambient air quality standards). Furthermore, even without FSA repairs, no vehicles unaffected by upfitter issues or prior crash damage were identified with CO levels that exceed accepted occupational CO exposure levels. This investigation finds that the 2011-2017 Ford Explorer vehicles when accurately measured produce occupant compartment CO levels which fall below current accepted health standards, and could not identify COHB levels for vehicle drivers or other occupants, which exceeded thresholds for acute physiological effects. Therefore, the agency has not identified a defect that represents an unreasonable risk to motor vehicle safety.This inve
Additional source detail variants (2)
Engine And Engine Cooling:exhaust System:manifold/header/muffler/tail Pipe
During the EA17-002 investigation, the agency reviewed and analyzed reports of exhaust odors in the passenger cabins of Model Year 2011 to 2017 Ford Explorers. This investigation required an approach that incorporated knowledge and expertise from the automotive, medical, environmental health, and occupational safety fields. The agency conducted an in-depth investigation that encompassed the review of over 6,500 consumer complaints, conducting field inspections, and testing the relevant vehicles, both independently and in coordination with Ford and other entities. During the investigation, the evolution of Ford service bulletins intended to reduce the level of exhaust odors and carbon monoxide (CO) entering the occupant compartment was examined and independent tests to evaluate the effectiveness of the final Field Service Actions (FSA) for both consumer and police vehicles were conducted. As part of the investigation, the agency also examined the effects of cracked exhaust mani-cats on the measured CO levels in the vehicles and tested the FSA repairs to ensure they did not adversely impact occupant compartment CO levels due to cracked mani-cats.The investigation identified upfitting issues for Police Interceptor vehicles. Upfitting (sirens, lights, cages, auxiliary power, etc.) is typically performed by governmental fleet operations, independent repair facilities, or local Ford dealers after the sale of the new vehicle. Sealing issues caused by upfitting were responsible for the highest measured carbon monoxide levels in tested vehicles. The police FSA instructs how to inspect the quality of the vehicle upfits and how to properly seal any leaks caused by these upfits, at no cost to the police agency. Similarly, the highest CO levels measured in consumer vehicles were usually traced to sealing issues caused by rear crash damage where the repairs did not ensure sealing integrity. The most recent Ford FSA procedure for both the police (17B25) and consumer vehicles (17N03) includes an HVAC reprogramming operation. Tests by Ford and NHTSA have demonstrated a substantial reduction of CO levels due solely to the HVAC reprogramming. Other FSA repairs also demonstrated measurable contributions to CO level reductions during controlled tests.Throughout the investigation, vehicles accurately measured with higher levels of carbon monoxide were almost always affected by upfitter alterations, damage, or other causes compromising rear passenger cabin seals.NHTSA received thousands of reports alleging odors which triggered a variety of physiological responses, predominately nausea, headaches, and lightheadedness. NHTSA focused the investigation on accurately measuring vehicle CO levels, and accurately measuring carboxyhemoglobin (COHB) levels from properly administered blood tests. Using rigorous test methods to produce exhaust gas intrusion in vehicles with a properly performed FSA, occupant compartment CO levels remained below current environmental limits for CO in any environment (EPA ambient air quality standards). Furthermore, even without FSA repairs, no vehicles unaffected by upfitter issues or prior crash damage were identified with CO levels that exceed accepted occupational CO exposure levels. This investigation finds that the 2011-2017 Ford Explorer vehicles when accurately measured produce occupant compartment CO levels which fall below current accepted health standards, and could not identify COHB levels for vehicle drivers or other occupants, which exceeded thresholds for acute physiological effects. Therefore, the agency has not identified a defect that represents an unreasonable risk to motor vehicle safety.This inve
Structure:body
During the EA17-002 investigation, the agency reviewed and analyzed reports of exhaust odors in the passenger cabins of Model Year 2011 to 2017 Ford Explorers. This investigation required an approach that incorporated knowledge and expertise from the automotive, medical, environmental health, and occupational safety fields. The agency conducted an in-depth investigation that encompassed the review of over 6,500 consumer complaints, conducting field inspections, and testing the relevant vehicles, both independently and in coordination with Ford and other entities. During the investigation, the evolution of Ford service bulletins intended to reduce the level of exhaust odors and carbon monoxide (CO) entering the occupant compartment was examined and independent tests to evaluate the effectiveness of the final Field Service Actions (FSA) for both consumer and police vehicles were conducted. As part of the investigation, the agency also examined the effects of cracked exhaust mani-cats on the measured CO levels in the vehicles and tested the FSA repairs to ensure they did not adversely impact occupant compartment CO levels due to cracked mani-cats.The investigation identified upfitting issues for Police Interceptor vehicles. Upfitting (sirens, lights, cages, auxiliary power, etc.) is typically performed by governmental fleet operations, independent repair facilities, or local Ford dealers after the sale of the new vehicle. Sealing issues caused by upfitting were responsible for the highest measured carbon monoxide levels in tested vehicles. The police FSA instructs how to inspect the quality of the vehicle upfits and how to properly seal any leaks caused by these upfits, at no cost to the police agency. Similarly, the highest CO levels measured in consumer vehicles were usually traced to sealing issues caused by rear crash damage where the repairs did not ensure sealing integrity. The most recent Ford FSA procedure for both the police (17B25) and consumer vehicles (17N03) includes an HVAC reprogramming operation. Tests by Ford and NHTSA have demonstrated a substantial reduction of CO levels due solely to the HVAC reprogramming. Other FSA repairs also demonstrated measurable contributions to CO level reductions during controlled tests.Throughout the investigation, vehicles accurately measured with higher levels of carbon monoxide were almost always affected by upfitter alterations, damage, or other causes compromising rear passenger cabin seals.NHTSA received thousands of reports alleging odors which triggered a variety of physiological responses, predominately nausea, headaches, and lightheadedness. NHTSA focused the investigation on accurately measuring vehicle CO levels, and accurately measuring carboxyhemoglobin (COHB) levels from properly administered blood tests. Using rigorous test methods to produce exhaust gas intrusion in vehicles with a properly performed FSA, occupant compartment CO levels remained below current environmental limits for CO in any environment (EPA ambient air quality standards). Furthermore, even without FSA repairs, no vehicles unaffected by upfitter issues or prior crash damage were identified with CO levels that exceed accepted occupational CO exposure levels. This investigation finds that the 2011-2017 Ford Explorer vehicles when accurately measured produce occupant compartment CO levels which fall below current accepted health standards, and could not identify COHB levels for vehicle drivers or other occupants, which exceeded thresholds for acute physiological effects. Therefore, the agency has not identified a defect that represents an unreasonable risk to motor vehicle safety.This inve
PE16008 · Ford Explorer Exhaust Odor
Opened Jul 1, 2016 · Closed Sep 12, 2017
Status: closed (inferred from source dates) · Engine And Engine Cooling:exhaust System; Structure:body
During the National Highway Traffic Safety Administration?s (NHTSA?s) investigation into the Ford carbon monoxide allegations, the Office of Defects Investigation (ODI) identified additional Vehicle Owner Questionnaire (VOQ) reports with similar exhaust odor claims.Presently, ODI has identified 791 VOQs for Model Year 2011-2017 Ford Explorers pertaining to exhaust odor claims.ODI has identified three crashes and 41 injuries potentially linked this issue.The reported injuries range from unspecified to loss of consciousness, with the majority being nausea, headaches, or dizziness ? all of which can be symptomatic of carbon monoxide exposure.Additionally, Ford provided 2,400 reports including owner complaints, warranty claims, dealer field reports, and legal claims, that involve 2,051 vehicles that may be connected to the exhaust odor issue.NHTSA's Vehicle Test and Research Center tested multiple vehicles, including complaint vehicles, during the investigation.ODI also conducted field inspections of complaint vehicles and crashes involving police units that occurred while the officers were on duty.When possible, data was collected to quantify carbon monoxide levels in the examined vehicles.Based on the information gathered to date, NHTSA upgraded this investigation to an Engineering Analysis (EA17-002).
Additional source detail variants (2)
Engine And Engine Cooling:exhaust System
During the National Highway Traffic Safety Administration?s (NHTSA?s) investigation into the Ford carbon monoxide allegations, the Office of Defects Investigation (ODI) identified additional Vehicle Owner Questionnaire (VOQ) reports with similar exhaust odor claims.Presently, ODI has identified 791 VOQs for Model Year 2011-2017 Ford Explorers pertaining to exhaust odor claims.ODI has identified three crashes and 41 injuries potentially linked this issue.The reported injuries range from unspecified to loss of consciousness, with the majority being nausea, headaches, or dizziness ? all of which can be symptomatic of carbon monoxide exposure.Additionally, Ford provided 2,400 reports including owner complaints, warranty claims, dealer field reports, and legal claims, that involve 2,051 vehicles that may be connected to the exhaust odor issue.NHTSA's Vehicle Test and Research Center tested multiple vehicles, including complaint vehicles, during the investigation.ODI also conducted field inspections of complaint vehicles and crashes involving police units that occurred while the officers were on duty.When possible, data was collected to quantify carbon monoxide levels in the examined vehicles.Based on the information gathered to date, NHTSA upgraded this investigation to an Engineering Analysis (EA17-002).
Structure:body
During the National Highway Traffic Safety Administration?s (NHTSA?s) investigation into the Ford carbon monoxide allegations, the Office of Defects Investigation (ODI) identified additional Vehicle Owner Questionnaire (VOQ) reports with similar exhaust odor claims.Presently, ODI has identified 791 VOQs for Model Year 2011-2017 Ford Explorers pertaining to exhaust odor claims.ODI has identified three crashes and 41 injuries potentially linked this issue.The reported injuries range from unspecified to loss of consciousness, with the majority being nausea, headaches, or dizziness ? all of which can be symptomatic of carbon monoxide exposure.Additionally, Ford provided 2,400 reports including owner complaints, warranty claims, dealer field reports, and legal claims, that involve 2,051 vehicles that may be connected to the exhaust odor issue.NHTSA's Vehicle Test and Research Center tested multiple vehicles, including complaint vehicles, during the investigation.ODI also conducted field inspections of complaint vehicles and crashes involving police units that occurred while the officers were on duty.When possible, data was collected to quantify carbon monoxide levels in the examined vehicles.Based on the information gathered to date, NHTSA upgraded this investigation to an Engineering Analysis (EA17-002).
EA15005 · Front Brake Hose Failure
Opened Sep 28, 2015 · Closed Nov 2, 2018
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
On April 29, 2015, the Office of Defects Investigation (ODI) opened PE15-017 to investigate a report alleging incidents of front brake hose failure in model year (MY) 2015 Ford Explorer Police Interceptor vehicles used by the Sacramento Police Department in its pursuit driving training program (VOQ 10705832).On September 28, 2015, ODI upgraded the investigation to an Engineering Analysis (EA15-005) to assess maximum front caliper crimp temperatures under various test conditions, test hose assemblies removed from police interceptor service for any signs of thermal degradation, and further assess field data for evidence of a defect trend related to the alleged defect.The alleged defect results from exposure to extremely high heat at the caliper-side hose crimp. NHTSA?s vehicle testing suggests that the conditions necessary to produce the critical temperatures in the subject components result from drive-soak intervals that can occur during the Sacramento training program.NHTSA's testing of hose assemblies returned from police interceptor service did not identify any evidence of thermal degradation.NHTSA has not confirmed any incidents of caliper crimp failures due to overheating in vehicles not subjected to the Sacramento training course driving.The low number of hose assembly failure reports and the absence of any verified incidents of heat related front brake hose crimp failures since 2015 suggests that the Sacramento PD incidents resulted from conditions unique to the training program.A safety related defect trend has not been identified at this time and further use of Agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The Agency will take further action if warranted by the circumstances.For additional information, see the Closing Report in the document file for EA15-005 on www.nhtsa.gov.
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