Owners report the brake master cylinder leaking fluid into the booster, a low brake fluid warning, and the brake pedal sinking to the floor with little or no stopping power, sometimes causing crashes.

How common

54 of the 300 complaints we read (18%), roughly 315 of all 1,750 on file

Typical mileage

around 38,111 miles (middle of 23 reports that give one)

Owner cost

$700 (middle of 3 owners who gave a price)

Hard to fix

6 owners say a repair did not last or the dealer could not find the cause

Safety

Can affect control: 51 of 54 reports; 8 reports mention a crash; 9 reports mention an injury

Related recalls

Owners mention 20V332000, 22V150000. Check the VIN for it.

Before you buy: Ask whether the brake master cylinder and booster were replaced, and make sure the brake pedal stays firm and high on a test drive.

• Brake pedal went to the floor with no braking power and the truck had to be towed; owner says this matches a known master cylinder recall, but Ford said the recall does not apply to this truck's parts batch. · filed Aug 2026
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  I went to start my truck and the brake went all the way to the floor. I had no braking power and it had to be towed back home over an hour away. There is a recall on 2016 Ford F150 with the 3.5 Eco Boost engine which I have. This recall involves a seal in the master cylinder failing and losing braking power and affecting the brake booster. Referencing recall 20S31. I went to Ford and they told me the recall did not apply to this specific truck due to a different batch of parts. This truck is now having the exact problem as the specific ones which have already been recalled. I believe the recall should be expanded. This occurred shortly after driving an hour in the rain with my kid in the back. It could have easily killed us on the highway with no brakes. We had no idea this recall was in effect. It’s the last time I’m buying a Ford. I want to feel safe with my kids in the back and Ford does not seem to care.

  NHTSA complaint ODI #11754135

• Brake pedal goes to the floor and makes stopping difficult, matching a known brake booster recall, but Ford has no open recall for this VIN. · filed Jan 2024
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  When braking, the brake pedal goes to the floor and makes stopping the vehicle difficult. There is no sign of leaks from the lines, and is acting like the open recall on other VIN numbers on this model however Ford does not have an open recall on this VIN. The recall is the brake booster leaking into the master cylinder.

  NHTSA complaint ODI #11566996

• Brake pedal went to the floor and failed to stop the truck at 35 mph, causing a rear-end crash and neck and back injuries. · filed Mar 2023
  Read the owner's complaint

  The contact owns a 2016 Ford F-150. The contact stated that while driving at 35 MPH, the brake pedal went to the floorboard while depressed. The vehicle failed to stop immediately rear-ending another vehicle. No air bags deployed. The contact sustained injuries to his neck and back but did not receive medical attention. A police report was filed. Additionally, the contact stated the vehicle consumed an excessive amount of oil and the key fob failed to function as needed. The vehicle was taken to the dealer; however, the vehicle was not diagnosed nor repaired by the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,000.

  NHTSA complaint ODI #11511503

Owners report the transmission suddenly downshifting, even to first gear at speed, shifting harshly or erratically, getting stuck in gear, going into limp mode or losing power, often tied to the transmission lead frame. Software updates and recall repairs did not always fix it.

How common

44 of the 300 complaints we read (15%), roughly 257 of all 1,750 on file

Typical mileage

around 117,000 miles (middle of 18 reports that give one)

Hard to fix

15 owners say a repair did not last or the dealer could not find the cause

Safety

Can affect control: 39 of 44 reports

Related recalls

Owners mention 26V237000. Check the VIN for it.

Before you buy: Ask whether the transmission lead frame or conductor plate was replaced and software updated, and watch for sudden downshifts or harsh shifts on a test drive.

• Transmission lead frame failed with the same codes and symptoms described in Ford's own customer satisfaction letter, but the dealer denied free coverage over undisclosed code requirements and the owner paid $1,630.02 for the repair. · filed Sep 2026
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  Ford mailed me a XXX Customer Satisfaction Program 26N04 letter for my 2016 F-150, VIN [XXX]. That letter offered a one-time, no-charge replacement of the transmission molded lead frame if the dealer determined replacement was needed, and it described a malfunction indicator lamp and/or wrench light when that part fails. My truck did exactly that. It stored P0715 and P0717, went into limp mode, and the wrench came on. Titus-Will Ford in Tacoma confirmed the turbine speed sensor is part of the lead frame and replaced it (part AL3Z-7G276-D). They denied 26N04 because those codes are not P0705, P0706, P0707, or P1702 — a code list the customer letter never disclosed. The failed part is the part named in your letter. The symptoms are the symptoms named in your letter. I paid invoice XXX dated XXX. The lead-frame line was $1,630.02. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

  NHTSA complaint ODI #11764463

• After a recall PCM reprogramming, the truck went into limp mode and the transmission downshifted unexpectedly, losing power; the dealer offered only a paid diagnostic test with no further help. · filed Sep 2026
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  The contact owns a 2016 Ford F-150. The contact stated that vehicle was taken to the local dealer for a recall repair associated with the PCM reprogramming. Upon retrieval, the vehicle went into LIMP Mode while driving. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted to a lower gear, and the vehicle lost motive power. The dealer was contacted and provided the contact with an estimate for a diagnostic test. The contact spoke with a supervisor, but no additional assistance was provided.

  NHTSA complaint ODI #11761800

• Truck lunged forward and accelerated on its own and the transmission failed to shift properly, even after a recall repair; the manufacturer said extra leadframe service is needed but not covered by the recall. · filed Aug 2026
  Read the owner's complaint

  The contact owns a 2016 Ford F-150. The contact stated that while operating the vehicle, the vehicle lunged forward. Additionally, while attempting to slow down to stop the vehicle, the transmission unexpectedly downshifted while driving. The vehicle was taken to the local dealer and serviced under NHTSA Campaign Number: 26V237000 (POWER TRAIN). After retrieving the vehicle, the vehicle lunged forward and independently accelerated, and the transmission failed to properly shift into the intended gear. During the failures, the vehicle was restarted, and the failure was self-corrected. The cause of the failures was not yet determined. The manufacturer and local dealer were notified of the failures, but no assistance was offered. The contact was later sent a letter from the manufacturer stating that additional service to the powertrain leadframe might be needed after the recall remedy was performed. The contact was informed that the additional service was not covered under the recall. No additional information was available. The failure mileage was 148,000.

  NHTSA complaint ODI #11758568

Owners report doors that will not latch, especially in cold weather, and doors that pop open by themselves while driving. Some say the latch recall repair had to be done more than once.

How common

31 of the 300 complaints we read (10%), roughly 181 of all 1,750 on file

Typical mileage

around 5,000 miles (middle of 3 reports that give one)

Hard to fix

6 owners say a repair did not last or the dealer could not find the cause

Safety

Airbag, seat belt or door safety: 8 of 31 reports

Related recalls

Owners mention 17V652000. Check the VIN for it.

Before you buy: Ask whether the door latch recall repair was done and check that every door latches firmly and stays shut.

• Passenger door lock actuator malfunctions intermittently, and the door once opened by itself while driving. · filed Feb 2025
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  Passenger side door lock actuator goes in and out. Sometimes the door will open sometimes it won’t. One time the door opened by it self while driving. I don’t know if it’s a short or what’s going on with it but it seems to be a problem with other ford owners as well.

  NHTSA complaint ODI #11641858

• Owner says a dealer's faulty door latch recall repair damaged the wire harness, causing the doors to open while driving and the backup camera and dashboard to stop working. · filed Jan 2025
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  I NEED TO REPORT FAILURE FIXING MY CAR RECALL NAMED *Faulty door Latch HARVARD FORD TEXTED ME TO RAKE MY CAR TO GET DONE BUT THEY DID A BAD JOB REPAIR INSTEAD OF REPLACE RECALL PART THEY DIDNT THEY DID CUT OUT WIRE HARNESS INSTEAD .Therefore THAT DAMAGED TYE AUTO NOW REVERSE CAM SCREEN IS NOT WORKING .TYE DOORS OPEN ITSELF WHILE IM DRIVING IT .DASH Board IS NOT ALSO WORKING IM FILLING A COMPLAINT AGAINST HARVARD FORD DEALERSHIP THE SOLUTION zI need is the following they need to REPLACE ALL COMPLETE NEW WIRE HARNESS ASAP.ALDI NEW REVERSE CAM AND SCREEN .IM ATTACHED ALL PROOF OF THE DAMAGE ..

  NHTSA complaint ODI #11634110

• Driver's side door will not close, and will not unlock with the key fob or the door lock button. · filed Oct 2023
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  Driver side door will not close or unlocked by fob or door lock button

  NHTSA complaint ODI #11552438

Owners report sudden loss of power and throttle response at speed, often with AdvanceTrac or wrench warnings or limp mode, traced to the throttle body, throttle actuator or throttle sensor. Some replaced throttle bodies failed again.

How common

26 of the 300 complaints we read (9%), roughly 152 of all 1,750 on file

Typical mileage

around 43,000 miles (middle of 7 reports that give one)

Hard to fix

5 owners say a repair did not last or the dealer could not find the cause

Safety

Can affect control: 25 of 26 reports

Before you buy: Ask whether the throttle body has been replaced and watch for sudden power loss or warning lights on a test drive.

• Vehicle suddenly decelerated with 'Service Advance Track' and 'Hill Brake Assist Unavailable' warnings; the dealer could not determine the cause, and a mechanic suspects a throttle body failure. · filed Aug 2025
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  The contact owns a 2016 Ford F-150. The contact stated that while driving at various speeds, the vehicle suddenly decelerated, and the warning messages "Service Advance Track" and "Hill Brake Assist Unavailable" were displayed. The power train warning light was illuminated. The vehicle was taken to the local dealer to be diagnosed, but the cause of the failure could not be determined. The local independent mechanic was contacted and advised the contact that the vehicle was likely experiencing a throttle body failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 132,000.

  NHTSA complaint ODI #11678452

• Truck suddenly and randomly loses power, forcing the owner to coast, stop, and restart it; two shops could not reproduce or diagnose the cause. · filed Aug 2023
  Read the owner's complaint

  While driving the truck it suddenly and randomly loses power. Pushing on the gas pedal no longer makes the truck go. You have to coast to a safe spot, brake and turn the truck off, then restart it for it to start working again. The truck has a jolting motion to it when it loses power and until it is shut off. The truck has several indicator lights flashing like a wrench and something about hill assist not functioning. The truck sometimes has trouble starting after it loses power. Safety concerns are if this happens while trying to turn and there is on coming traffic you could get T-boned. If you are unable to pull over on the side of the road to restart the truck, then you risk being stopped in traffic and being hit from behind. This has happened on 3 occasions and happens randomly without warning. It has happened twice in one day. The truck has been to two shops who are unable to reproduce it and unable to find the problem. On-line forums lead me to think it is the electronic throttle body. A previous recall for this was 16B32. The vehicle has not yet been inspected by insurance company or police. The truck has three appointments with 2 different ford dealerships and one independent auto shop coming up for further inspection.

  NHTSA complaint ODI #11541042

• Truck suddenly lost power entering traffic, going into limp mode twice within 10 miles with the kids aboard; a throttle sensor code was stored. · filed Jul 2023
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  Code P2112 was saved in the system also referring to the throttle position sensor or wiring. Taking my truck in to get looked at this week of 7-26-23. Truck was driving normal and out of no where it loses power entering traffic like it was in limp mode. Dash displays first “see service manual” second “ Service AdvanceTrac” and then finally “hill start assist not available”. When it came to a stop it idled normal but would not accelerate. Had both my kids with me so suddenly stopping like it did in heavy traffic area is alarming and could’ve been bad outcome had someone not been paying attention. This happened twice within 10 miles. Turned truck off and on to get it to go again

  NHTSA complaint ODI #11534488

Owners report the rear window glass shattering on its own, when a door is closed or while driving, sometimes on cold mornings with the defroster on.

How common

23 of the 300 complaints we read (8%), roughly 134 of all 1,750 on file

Hard to fix

2 owners say a repair did not last or the dealer could not find the cause

Safety

Fire or smoke: 7 of 23 reports; 2 reports mention a fire

Before you buy: Ask whether the rear window glass has been replaced and inspect it for cracks.

• Rear window shattered again a couple weeks after being replaced once already; owner says Ford would not help with the repeat repair cost. · filed Aug 2023
  Read the owner's complaint

  Rear Window Keeps Shattering 2016 F150 King Ranch have already replaced once now about couple weeks later did it again this is my fathers truck and he’s almost 70 Years old and scared him !! This is a problem I called Ford and no help .. Need to stand behind their product!!! Not fair for him to keep paying..

  NHTSA complaint ODI #11537544

• Rear window shattered right after a burning wires or plastic smell and a burn spot appeared at the window base while the defroster was on. · filed Jul 2023
  Read the owner's complaint

  rear window shattered after use of Defrost. Smell of burning wires/plastic immediately before. looks like a burn spot at window base, last photo with white smudge

  NHTSA complaint ODI #11534513

• Rear window suddenly shattered with a loud bang and bulged outward while commuting, with no rock strike or prior damage. · filed Dec 2022
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  On the morning of 12/16/22 while commuting to work, the rear window randomly shattered (an extremely loud bang). It almost looks like it exploded from the inside out (bulging out). There was no apparent contact by rocks or any known previous cracks or chips in the window. It was a cold morning, and the defrosters were on (rarely used in Louisiana)- that's the only thing unusual related to the rear window going on at the time.

  NHTSA complaint ODI #11497738

Owners report the engine stalling at idle, at stops, while coasting and while driving, sometimes mid-turn, with dealers often unable to find the cause.

How common

15 of the 300 complaints we read (5%), roughly 88 of all 1,750 on file

Typical mileage

around 22,604 miles (middle of 3 reports that give one)

Hard to fix

7 owners say a repair did not last or the dealer could not find the cause

Safety

Can affect control: 15 of 15 reports; 1 report mentions a crash

Before you buy: Watch for rough idle or stalling at stops and while coasting on a test drive.

• Engine stalls or nearly shuts off when slowing or stopping, runs rough and sluggish with the check engine light on; repeated dealer repairs including a timing job have not fixed it. · filed Jul 2024
  Read the owner's complaint

  What component or system failed or malfunctioned, and is it available for inspection upon request? Timing system, yes. How was your safety or the safety of others put at risk? Truck shuts off in the middle of the road. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, 5 of them. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, by multiple parties. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes it did/does! The check engine light comes on now with the same symptoms it had before. The problems started less than a month after I got the truck. The first 10 to 15 minutes the truck drives fine then afterwards the check engine light normally comes on throws code p0022. It use to start rough idling with no light on at all but kills when I stop at a light or act as if it’s going shut off when slowing down. The truck is sluggish while it’s acting up, slow to pick up speed and it runs rough. The light will go off for 10 miles and be back on the next day but stays on. The remote start won’t work . The dealer I purchased it from did a lot of work but nothing they did fixed the problem. On paper it says cleaning rather than what they really did. I know they cleaned the throttle body, replaced one of the battery terminals etc.,. The truck has had a full timing job, alternator , water pump and much more done to it. Money was spent on this and the truck continues to do the same thing. Received a diagnostic from yet another ford and they’re trying to replace the same parts that has been replaced multiple times. The truck still isn’t fixed and never has been since day one. It’s just parts being changed and money being wasted. It’s so much I can speak on about this truck but it’s very frustrating. Attached will be some of the invoices that I have for the work that’s been done on the ford f150.

  NHTSA complaint ODI #11597887

• Owner says the engine repeatedly stalls at idle and while driving; despite spending over $5,000 at the dealership, no repair has lasted more than a few weeks. · filed Sep 2022
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  Engines for the f150 stall out at idle and while on the road. This could leads to a variety of safety problems and for has shown a unwillingness to address the issue and an inability to fix it. i have found 10s of thousands of people online who have similar issues and have ( like me ) taken it to for at their own expanse and gotten no solution. Without action from NHTSA ford will not fix it as they have millions of income from customers paying to fix to no avail. I myself have spend over 5k at the dealership and hour of my time to resolve and yet no repair works for longer then a few weeks at best.

  NHTSA complaint ODI #11484980

• The engine idles rough and then stalls after being driven and coming to a stop, with no warning lights or codes; owner believes faulty VCT solenoids and cam phasers are to blame. · filed Aug 2022
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  Vehicle idles rough than stalls after being at speed when stopped. Present a drivable condition in dangerous situations,no warning and throws no codes according to Ford service dealers. This condition has been present for over a year. It’s my belief FMC knows about faulty VCT selinoids and cam phasers failure. They do have a TSB out on some of it. This condition does present a dangerous condition because there are no indications that the truck engine has died. FMC needs to recall vehicles with this condition and replace/ repair the faulty components at their cost.

  NHTSA complaint ODI #11480719

Owners report the two-piece lug nuts swelling so they cannot be removed with the supplied wrench to change a tire.

How common

8 of the 300 complaints we read (3%), roughly 47 of all 1,750 on file

Safety

Not a safety issue

Before you buy: Check that the lug nuts come off with the supplied wrench or ask whether they were replaced.

• During routine maintenance, the dealer found the lug nuts swollen and could not remove the wheel to replace the tires. · filed Apr 2024
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  The contact owns a 2016 Ford F-150. The contact stated that when the vehicle was taken to the dealer for regular maintenance, the contact was informed that the lug nuts were swollen, and the mechanic was unable to remove the wheel to replace the tires. The tires were not replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 93,000.

  NHTSA complaint ODI #11584810

• Ford's aluminum lug nut caps over a steel core are swollen and distorted. · filed Aug 2023
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  Ford's aluminum lug nut caps are swollen and distorted. Ford put aluminum caps over a steel core which is causing the problem.

  NHTSA complaint ODI #11538581

• Lug nuts were swollen and had to be cut off; a Ford technician said this is a known issue that could break while driving. · filed Apr 2023
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  Lug nut were swollen so they couldn’t be taken off without cutting. Ford technician stated it is a know issue that Ford knows about. Aluminum caps over steel bolts. According to the tech at the dealership, they could also break while driving due to the swelling.

  NHTSA complaint ODI #11519649

Owners report plastic sunroof guides and tracks cracking or binding, leaving the sunroof stuck open or closed, rattling or leaking.

How common

7 of the 300 complaints we read (2%), roughly 41 of all 1,750 on file

Typical mileage

around 48,509 miles (middle of 4 reports that give one)

Safety

Not a safety issue

Before you buy: Open and close the sunroof fully and listen for rattles or grinding.

• Panoramic moonroof opened but then would not close, and a mechanic diagnosed a failed moonroof assembly. · filed Jul 2024
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  The contact owns a 2016 Ford F-150. The contact stated that while opening the panoramic moon roof, the moon roof functioned as intended; however, the moon roof then failed to close. Later, the contact became aware that the moon roof would open but not close. There was no warning light illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the moon roof assembly. The vehicle was not repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 77,000.

  NHTSA complaint ODI #11600487

• Sunroof would not open and made a loud roaring sound; owner says the manufacturer mentioned a related class action lawsuit. · filed Jun 2024
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  The contact owns a 2016 Ford F-150. The contact stated that while driving at an undisclosed speed and attempting to open the sunroof, the sunroof failed to open and made an abnormal powerful roaring sound. No warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and informed the contact of a Class Action Lawsuit being opened regarding the failure. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 44,000.

  NHTSA complaint ODI #11595491

• Sunroof got stuck and would not close; the dealer found the guides and rails needed replacing but the truck was not repaired. · filed Oct 2023
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  The contact owns a 2016 Ford F-150. The contact stated that the sunroof was stuck and would not close as needed. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the guides and rails needed to be replaced. The vehicle was not repaired. The contact stated that the failure was related to TSB: 21-2292. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 53,018.

  NHTSA complaint ODI #11548245

Owners report losing power steering assist or the steering locking up while driving, with some needing the steering rack replaced.

How common

6 of the 300 complaints we read (2%), roughly 35 of all 1,750 on file

Safety

Can affect control: 6 of 6 reports

Before you buy: Ask whether the power steering rack was replaced and check for heavy or jerky steering on a test drive.

• Steering wheel whined, popped, jerked, then locked up while driving, forcing the driver to stop; a faulty steering warning light came on afterward. · filed Jun 2024
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  While driving after making a right turn steering wheel started whining then a loud popping noise then steering wheel starts jerking back and forth then locks on me without any warning lights coming on. I was going over 15 miles with cars behind me. Put on breaks to come to a complete stop and put the truck in park because the steering wheel had locked. Terrified!!! After turning the truck off and back on that’s when the light comes on about faulty steering. Thank God no one ran into the back of me.

  NHTSA complaint ODI #11596870

• Steering became firm and then stopped assisting at 35 mph; the dealer replaced the steering rack assembly. · filed Dec 2020
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  TL* THE CONTACT OWNS A 2016 FORD F-150. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, THE STEERING BECAME FIRM BEFORE CEASING. THE CONTACT PULLED OVER AND RESTARTED THE VEHICLE AND DROVE TO THE RESIDENCE. THE FOLLOWING DAY THE VEHICLE WAS TAKEN TO AUTONATION FORD BRADENTON (5325 14TH ST W, BRADENTON, FL 34207) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE STEERING RACK ASSEMBLY NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OR FAILURE. THE FAILURE MILEAGE WAS 76,650.

  NHTSA complaint ODI #11384472

• Truck shut down completely and lost power steering mid-turn at 40 mph while exiting the interstate, cycling on and off until the driver could stop. · filed Dec 2019
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  WHILE EXITING THE INTERSTATE, MAKING A HARD SWOOPING LEFT HAND TURN, MAKE TRUCK SHUTDOWN COMPLETELY. AT APPROXIMATELY 40MPH AND TURNING, I SUDDENLY HAD TO FIGHT THE LACK OF POWER STEERING. AS SOON AS I FELT IT STOP IT POWERED BACK UP. THIS ISSUE CONTINUED INTERMITTENTLY UNTIL I WAS ABLE TO SAFELY COME TO A STOP.

  NHTSA complaint ODI #11292008

Owners report warped or cracked exhaust manifolds and broken studs or bolts causing ticking or whistling noises, power loss and exhaust fumes entering the cabin.

How common

5 of the 300 complaints we read (2%), roughly 29 of all 1,750 on file

Typical mileage

around 50,000 miles (middle of 5 reports that give one)

Safety

Injury risk: 2 of 5 reports

Before you buy: Listen for ticking or whistling from the engine bay and smell for exhaust in the cabin.

• Vehicle made an abnormally loud sound accelerating from a stop; the exhaust manifold was replaced twice for a leak, but the noise kept coming back. · filed Dec 2023
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  The contact owns a 2016 Ford F-150. The contact stated while driving from a complete stop, the vehicle made an abnormally loud sound. The vehicle was taken to the dealer, where it was diagnosed that the exhaust manifold was leaking and needed to be replaced. The vehicle was repaired; however, the failure reoccurred a year later. The vehicle was taken back to the dealer, where the same assessment was made, and the exhaust manifold was replaced; however, the failure persisted. The vehicle was taken back to the dealer, where it was diagnosed that the exhaust manifold needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 60,000.

  NHTSA complaint ODI #11557944

• Dealer noticed an unusual whistling sound from the engine compartment and found a warped manifold with fractured studs; it was not repaired. · filed Oct 2023
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  The contact owns a 2016 Ford F-150. The contact stated that the vehicle was taken to the dealer for a service appointment. The contact was informed by the dealer that he had heard an unusual whistling sound coming from the engine compartment. The vehicle was diagnosed with a warped manifold and fractured studs on each side of the manifold. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 48,000.

  NHTSA complaint ODI #11551032

• Sheared exhaust manifold bolts let carbon monoxide leak into the cabin, and a passenger lost consciousness; the dealer found no recall covering it. · filed Jan 2023
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  The contact owns a 2016 Ford F-150. The contact stated while driving various speeds, he heard an abnormal whistling sound coming from the vehicle. One day upon exiting and returning to the vehicle, the contact's girlfriend had passed out in the back seat. Upon approaching the passenger’s side to wake her up, the contact smelled carbon monoxide odor coming from her side of the vehicle. The contact’s girlfriend did not seek medical attention after becoming unconscious. Upon investigation, the contact discovered that bolts on the exhaust manifold were improperly placed, causing the bolts to shear off, leading to a carbon monoxide leaking into the vehicle. The dealer was notified of the failure and informed him that there were no recalls on the VIN. The manufacturer was also notified of the failure and acknowledged that they were aware of the failure however, there was no recall for the failure. The vehicle was not repaired. The failure mileage was approximately 140,000.

  NHTSA complaint ODI #11503196