2021 Lincoln Aviator Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2021 Lincoln Aviator, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical1119.6%
- Driver assistance712.5%
- Visibility610.7%
- Engine610.7%
- Fuel system58.9%
- Body & structure47.1%
- Powertrain (other)47.1%
- Interior & seats35.4%
- Brakes35.4%
- Exterior lighting23.6%
- Suspension23.6%
- Other / unspecified11.8%
- Steering11.8%
- Airbags11.8%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
I have been having issues with my breaks sticking when applied. To the point that it’s completely stopping my car and i need to use my foot to release the brake from behind. I have had the dealership look at this issue and they can’t seem to find the problem. They also broke my car and claimed they did not feel the sticking. I’ve had the dealership look at my vehicle twice for this issue. It is a safety risk with children in my vehicle. Also everyone i lock my vehicle. My alarm is going off saying someone is opening the door on my Lincoln app. Additionally, every time i start my car it says the passenger door is open, when it’s not. The sync Bluetooth constantly connects and disconnects or if i plug my phone i to the charger for CarPlay it does not work. This biggest problem is my brakes sticking. Like i said when i am braking gradually they are sticking to the floor and not releasing. Thai doesn’t always happen but it has happen a lot recently. I need this fixed!!!!! Multiple recalls that are not available as well
The contact owns a 2021 Lincoln Aviator. The contact stated that the vehicle did not start, the vehicle was , the hood was raised, the contact went back to the vehicle to try to start, the vehicle would not turn over with clicking in the engine. the vehicle began to smoke with very thick white smoke, the contact was unable to exit the vehicle of the drivers side front seat. The battery was disconnected and a manual latch was discovered on the drivers side door. The vehicle was towed to the dealer but had not been diagnosed or repaired. The manufacturer was not notified of the issue. The approximate failure mileage was 60,000.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
The vehicle is intermittently braking on its own while driving. The issue has become significantly worse over the course of a month. The dashboard message reads, “brake applied, power reduced”. This is a danger to both myself and other drivers as we are unable to control the speed of the vehicle.
Driving 75mph. Cruise set to 75mph. Vehicle randomly reset cruising speed to 85 and 105mph or two separate occasions over 4 days. I went through the settings and disabled intelligent cruise control and switched it to adaptive cruise control, which doesn't use radar and navigation data. Only tell will tell if that fixed it. I already had speed sign recognition disabled.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
The contact owns a 2021 Lincoln Aviator. The contact received notification of NHTSA Campaign Number: 26V117000 (Visibility); however, the part to do the recall repair was unavailable. The dealer was contacted, and the contact was informed that parts would be available at the end of June 2026. The manufacturer was not contacted. The contact had not experienced a failure.
The driver-side front window regulator failed and was replaced on October 4, 2025. The passenger-side window regulator also failed and was removed and replaced on November 21, 2025. At the time each incident, the window would not raise using the car controls and remained stuck in the down position. Two window regulator failures on opposite sides of this vehicle just seven weeks and within roughly 2,400 miles apart does not indicate typical wear. It reflects a pattern failure consistent with a component defect. At the time of the October incident, I was actively driving the vehicle and the November incident when was while the car was parked, when the window failed and would not raise. After parking and then restarting my vehicle, the window remained fully or partially down and could not be returned to a closed and secured position. This created multiple safety and security risks, including: • Inability to secure the vehicle against theft or intrusion • Exposure to weather, rain, or debris • Increased cabin noise due to broken window • Risk of vehicle damage while parked without protection. The vehicle was left parked and unsecured solely due to the window malfunction. No police or insurance inspection occurred, as the incident did not involve a collision or theft, though the vehicle was left unsecured. The failure was diagnosed and confirmed by the manufacturer, Lincoln and independent service center Firestone Complete Auto Care, who completed the repair. There was No warning lamps or dashboard messages that appeared prior to or during the failure. Both window regulator failed suddenly and without warning. In my research, numerous Aviator owners have publicly reported identical regulator failures, (Reddit and YouTube) which further reinforces that this is a systemic issue, not an isolated event.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
The contact owns a 2021 Lincoln Aviator. The contact stated that the vehicle did not start, the vehicle was , the hood was raised, the contact went back to the vehicle to try to start, the vehicle would not turn over with clicking in the engine. the vehicle began to smoke with very thick white smoke, the contact was unable to exit the vehicle of the drivers side front seat. The battery was disconnected and a manual latch was discovered on the drivers side door. The vehicle was towed to the dealer but had not been diagnosed or repaired. The manufacturer was not notified of the issue. The approximate failure mileage was 60,000.
1.) Exhaust System Failure (Flex Pipe / Catalytic Converter) The vehicle’s exhaust system—specifically the flex pipe connected to the catalytic converter—cracked and malfunctioned. This component is available for inspection upon request. As a result of the failure, exhaust fumes entered the cabin, creating a significant safety risk due to potential exposure to carbon monoxide. Prior to the failure, I noticed a persistent rattling noise at low speeds and while the vehicle was idling. The issue was inspected and confirmed by the dealership; however, I was informed that the repair falls outside of warranty coverage. I would like to know if this falls under safety hazard for emissions. 2.) Sunroof Glass Shattering Incident While driving, the sunroof glass suddenly shattered and appeared to implode outward. According to the dealership technicians, this may have been caused by thermal stress or frame-related tension. The glass is no longer intact but the remaining components and frame can be inspected upon request. The incident posed an immediate safety hazard to both myself and other road users due to the sudden loss of glass and the potential for debris. I did not observe any warning lamps, messages, or symptoms prior to the failure. After researching the issue, I found that similar sunroof glass failures have been reported across various Ford/Lincoln models, suggesting this may be a known manufacturer defect. The dealership has confirmed the damage but no inspection by the manufacturer, police, or insurance representatives has been conducted at this time.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
The contact owns a 2021 Lincoln Aviator. The contact received notification of NHTSA Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that while driving 70-75 MPH, the check engine warning light illuminated, and the vehicle stalled. The vehicle was towed to a friend's residence, where it failed to restart. The dealer was contacted and informed that the vehicle would be repaired at the owner's expense because the recall remedy was unavailable. The contact was informed that a reimbursement claim could be filed with the manufacturer afterwards. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the failure. The failure mileage was approximately 67,000.
For the first 39 months of my ownership my 2021 Lincoln Aviator Grand Touring plug-in electric hybrid would not charge properly and resulted in thousands of charge station fault alerts. The dealership was dismissive of the issue for years because it seemed to work for the few minutes when they charged it on their high voltage charger even though I voiced concerns about the charger port being bad on the vehicle and it not working properly at home. My Aviator would not charge unless the plug was in the exact perfect spot and rarely would make it to a full charge before faulting out. Eventually the port started making SPARKING NOISES, ELECTRIC FIRE SMELLS, and SMOKES when plugged in. I was afraid my Aviator was going to start a fire and burn my house down, so I stopped charging it for at least 6 months until a new service manager finally took the time to investigate the issue. It was found in May 2024 that not only was the charger cable that came with my Aviator when I bought it defective but so was the charger port on my vehicle. The use, value, and safety of my vehicle impaired significantly for several years by this issue. I am reporting this so that there is awareness that the Aviator plug-in hybrid charger port and charger cable can be defective which results in loss of charging capability and could result in a fire.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
My 2021 Lincoln Aviator PHEV lift gate safety stop does not function properly. It will come closing down extremely hard. This will happen when the button is pressed on the lift gate or the hands free feature is triggered. The lift gate will not safety stop and pop back open as it should unless a significant amount of force is used; this is usually 2 or more people trying with all their strength to stop it from closing on them. I have been hurt by this and so has my child. This is a serious safety issue. I have included screenshots from the video (the system won’t let me send the video) I took replicating the issue with it completely crushing a box at the height of my head.
Trim piece on back drivers side window has fallen off while driving down the highway.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
The contact owns a 2021 Lincoln Aviator. The contact stated that while the vehicle was unoccupied and parked on an incline, the vehicle rolled backwards several feet and then came to a complete stop. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to NHTSA Campaign Number: 26V402000 (Power Train); however, the VIN was not included in the recall. The manufacturer was made aware of the failure. The failure mileage was approximately 98,000.
For the first 39 months of my ownership my 2021 Lincoln Aviator Grand Touring plug-in electric hybrid would not charge properly and resulted in thousands of charge station fault alerts. The dealership was dismissive of the issue for years because it seemed to work for the few minutes when they charged it on their high voltage charger even though I voiced concerns about the charger port being bad on the vehicle and it not working properly at home. My Aviator would not charge unless the plug was in the exact perfect spot and rarely would make it to a full charge before faulting out. Eventually the port started making SPARKING NOISES, ELECTRIC FIRE SMELLS, and SMOKES when plugged in. I was afraid my Aviator was going to start a fire and burn my house down, so I stopped charging it for at least 6 months until a new service manager finally took the time to investigate the issue. It was found in May 2024 that not only was the charger cable that came with my Aviator when I bought it defective but so was the charger port on my vehicle. The use, value, and safety of my vehicle impaired significantly for several years by this issue. I am reporting this so that there is awareness that the Aviator plug-in hybrid charger port and charger cable can be defective which results in loss of charging capability and could result in a fire.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
Interior front reading lights turn on and off randomly when driving and when not driving. This is incredibly distracting especially at night.
The contact owns a 2021 Lincoln Aviator. The contact stated that the seat folding switch on the third-row seat failed to function as intended. The seat was stuck in the down position. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was notified of the failure. The failure mileage was unknown.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
I have been having issues with my breaks sticking when applied. To the point that it’s completely stopping my car and i need to use my foot to release the brake from behind. I have had the dealership look at this issue and they can’t seem to find the problem. They also broke my car and claimed they did not feel the sticking. I’ve had the dealership look at my vehicle twice for this issue. It is a safety risk with children in my vehicle. Also everyone i lock my vehicle. My alarm is going off saying someone is opening the door on my Lincoln app. Additionally, every time i start my car it says the passenger door is open, when it’s not. The sync Bluetooth constantly connects and disconnects or if i plug my phone i to the charger for CarPlay it does not work. This biggest problem is my brakes sticking. Like i said when i am braking gradually they are sticking to the floor and not releasing. Thai doesn’t always happen but it has happen a lot recently. I need this fixed!!!!! Multiple recalls that are not available as well
The vehicle is intermittently braking on its own while driving. The issue has become significantly worse over the course of a month. The dashboard message reads, “brake applied, power reduced”. This is a danger to both myself and other drivers as we are unable to control the speed of the vehicle.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
My vehicle’s camera system, including the backup camera, is experiencing an issue where the passenger-side camera fails to display properly, showing only a blank black area. I have reported this issue to my dealership for future inspection. It is not yet clear whether the problem persists during daylight hours; however, it poses a significant safety risk at night when visibility is already limited. The loss of the passenger-side camera view creates a blind spot that could increase the likelihood of an accident or injury.
The "auto" mode on my Sync screen on my 2021 Lincoln Aviator does not always automatically switch between day and night based on ambient light levels. This is a blinding experience at night when the screen doesn't switch to night mode and the brightness is intense. This blinding screen makes it hard to see outside when it is dark which could lead to an accident. My dealer says I have the most up to date version of Sync for my vehicle and there is no fix for this problem.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
My car start making a very loud squeaking noise when I turn or hit any small bumb in the road. So I took it to the shop and was told both front lower ball joint boots are broken the exact same way. Now what bother me is what the mechanic said next. I quote " some type of suspension problem always happens on these cars. So my question is were there any recall about suspension on these cars? Online says yes. While my vin doesn't show one
Hello. My name is [XXX] and I have a potentially serious issue with my car and Lincoln refuses to look into it. The short story : When you press the brakes moderately or harder (as if stopping for a yellow light) it sounds like you’ve run over a brick or hit a BIG pothole. It has been in 6 times and to 3 dealerships and they all say it is normal for Aviators and Explorers. I have owned an auto repair shop for 12 years and my guys fix 2000 cars per year. I am an ASE master certified mechanic and I can assure anyone that there is nothing normal about this bang. They tell me they drive a like vehicle and if it also makes noise, there is nothing they can do. I have reached out to Lincoln Concierge multiple times and they tell me they will do nothing if a like vehicle also does it. I think of the 2019 Pacifica that the lower ball joint pinch bolts comes out and folds the wheel under the vehicle. I have had 3 service managers drive the car and they have all told me that it sounds really bad and abnormal. I have been told by all of those managers that Lincoln enforces not doing any further diagnostics or repairs if they all do it. I did drive a 2023 Aviator with a service advisor and it did not make the same noise mine does. You can actually feel the noise in the steering wheel. I have pleaded with them to investigate the issue and at least let me speak with a supervisor about it but they refuse. I have asked the dealers to put a set of chassis ears on the suspension to pinpoint the sound and they say Lincoln will not let them. The vehicle has 33k on it and is still under full factory and extended CPO warranty. Can you guys look into this issue before someone gets hurt ? Thanks for reading INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
My vehicle has heated seats. This week, when I was using the heated seats, I noticed a burning sensation on my left buttocks. I later discovered a burn hole in my seat (bottom left) and a matching burn on the coat I was wearing (bottom left). I am reporting this incident I because I believe there is a defect of the heated sweats in my vehicle that could lead to severe burns to passengers.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
Hello. My name is [XXX] and I have a potentially serious issue with my car and Lincoln refuses to look into it. The short story : When you press the brakes moderately or harder (as if stopping for a yellow light) it sounds like you’ve run over a brick or hit a BIG pothole. It has been in 6 times and to 3 dealerships and they all say it is normal for Aviators and Explorers. I have owned an auto repair shop for 12 years and my guys fix 2000 cars per year. I am an ASE master certified mechanic and I can assure anyone that there is nothing normal about this bang. They tell me they drive a like vehicle and if it also makes noise, there is nothing they can do. I have reached out to Lincoln Concierge multiple times and they tell me they will do nothing if a like vehicle also does it. I think of the 2019 Pacifica that the lower ball joint pinch bolts comes out and folds the wheel under the vehicle. I have had 3 service managers drive the car and they have all told me that it sounds really bad and abnormal. I have been told by all of those managers that Lincoln enforces not doing any further diagnostics or repairs if they all do it. I did drive a 2023 Aviator with a service advisor and it did not make the same noise mine does. You can actually feel the noise in the steering wheel. I have pleaded with them to investigate the issue and at least let me speak with a supervisor about it but they refuse. I have asked the dealers to put a set of chassis ears on the suspension to pinpoint the sound and they say Lincoln will not let them. The vehicle has 33k on it and is still under full factory and extended CPO warranty. Can you guys look into this issue before someone gets hurt ? Thanks for reading INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
I was completely stopped in traffic a car failed to reduce speed and slammed into the back of my car. My neck whipped forward no air bags deployed.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .