2021 Ford Expedition Powertrain (other) Problems

VIN):[XXX]/Make/Model: 2021 Ford Expedition XLTCurrent Mileage: Approx. 150,000 milesLocation: [XXX] of the Safety Defect:El vehículo presenta un defecto de seguridad crítico y extremo en el tren motriz que pone en riesgo inminente la vida de los ocupantes y de terceros en la vía pública. En dos ocasiones distintas durante los últimos 15 días, el vehículo ha sufrido una pérdida total de comunicación electrónica y un bloqueo mecánico absoluto mientras se encontraba en plena marcha en avenidas de [XXX].Al ocurrir la falla, el tablero activa de inmediato la luz de la llave inglesa (Wrench Light), descontrola la marcha, bloquea la transmisión de 10 velocidades y activa de manera imprevista y automática el freno de emergencia electrónico, deteniendo el vehículo por completo en medio del tráfico.En el primer incidente (ocurrido en sábado), la gravedad del bloqueo mecánico obligó la intervención de los servicios de emergencia en la vía pública, requiriendo la asistencia de la policía y el cuerpo de bomberos para mover el vehículo a una zona segura. El sistema electrónico sufre un colapso total (cortocircuito térmico o fallo de la red CAN Bus) provocado por las temperaturas de la zona; el vehículo se vuelve inoperante y la computadora no responde ni permite el encendido hasta que se deja enfriar por un lapso forzoso de 2 horas.Esta falla mortal se agudizó y se volvió recurrente inmediatamente después de que un concesionario oficial de Ford aplicara la reprogramación de software correspondiente al Recall de emisiones XXX PCM. El concesionario original (Team Ford Lincoln) se niega a diagnosticar la gravedad de este fallo de seguridad sin un cobro de tarifa de diagnóstico de más de $500 dólares, deslindándose del peligro vial provocado tras la ejecución de su propia campaña oficial de servicio. Solicito la intervención de las autoridades federales para que el fabricante asuma la responsabilidad. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11763468

Incident

Aug 29, 2026

While trying to pull out of a residential neighborhood onto a state highway (45 mph speed limit), the vehicle refused to accelerate. The transmission couldn't engage into gear and the vehicle struggled to gain momentum. After letting off of the accelerator pedal, and then applying the accelerator again, the transmission was able to engage, and the car began to accelerate. No check engine light or other indication of a problem. The Ford dealer told us that the CDF drum of the transmission needed to be replaced. It is a known defect due to poor engineering design. This is very common problem in 2020 and 2021 Expeditions and F150 vehicle.

NHTSA ID

11762823

Incident

Nov 3, 2025

My Ford Expedition’s 10-speed automatic transmission experienced repeated slipping and sudden loss of propulsion. While accelerating from a stop and entering the highway, typically around 15–20 MPH, the engine would suddenly rev but the vehicle would stop accelerating, as if the transmission had shifted into neutral. I had to release the accelerator for several seconds and slowly reapply throttle before the transmission would re-engage. This occurred repeatedly and created a serious safety hazard when pulling into or crossing traffic because the vehicle could begin accelerating normally and then unexpectedly lose propulsion with approaching traffic. The transmission also exhibited severe harsh/banging shifts during harder acceleration and produced a rattling noise while slipping until the accelerator was released. CDF drum failure has been confirmed. The vehicle is currently at a reputable independent transmission repair facility undergoing a transmission rebuild due to the CDF failure. The transmission/components are available for inspection during the repair. There were no warning lights or messages that reliably warned of the impending loss of propulsion. This was not simply poor shift quality; the transmission defect caused an actual loss of propulsion while driving. Because this failure can leave a driver unable to accelerate while entering an intersection, pulling onto a highway, or merging into traffic, I believe the CDF failure presents a serious safety risk. I am requesting NHTSA investigate CDF-related transmission failures and determine whether a safety recall is warranted. TSB 23-2250

NHTSA ID

11760692

Incident

Aug 18, 2026

The contact owns a 2021 Ford Expedition. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however the vehicle failed to accelerate as intended. The contact noticed an abnormal sound and the vehicle jerked. No warning lights were illuminated. The failure was persistent. The vehicle was taken to the dealer and to an independent mechanic; however the failure could not be duplicated. The vehicle was not diagnosed or repaired. The contact stated that the vehicle was the family's only means of transportation, and the vehicle was unsafe to drive. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was unknown.

NHTSA ID

11760464

Incident

Sep 19, 2024

For the past three years I have complained about the transmission dropping out of gear. It happens most often if I'm towing a trailer. I seems to occur in spurts, happening a couple of times in a few days then not for some time. Very dangerous if you pull around to pass and suddenly you lose power. Originally the dealership said they could find nothing wrong. I have read recently that Ford is having trouble with their transmissions. At my latest service appointment, I restated my problem and was told I need a new transmission.

NHTSA ID

11756944

Incident

Jul 8, 2026

Vehicles automatic transmission repeatedly looses its gear, often while accelerating. The transmission tries to shift down, but somehow ends up loosing engagement and will not re-engage. This lead to critical/dangerous situations on Highways due to the sudden loss of power.

NHTSA ID

11755022

Incident

Jul 14, 2026

OEM transmission had to be replaced 3 years after new purchase. Replacement transmission installed at Ford dealership has failed after less then 2 years. About to have third transmission installed.

NHTSA ID

11754495

Incident

Aug 1, 2026

On my expedition I started having issues with my transmission staying in gear while driving. I will be going up a hill and all of a sudden boom it starts down shifting or not accelerating at all. I had a few times when me and my wife will be driving, and we would be going through a intersection or a area where you don't want to slow down and then the transmission would forget which gear it would be in and lose all power. Keep in mind my expedition only has 83K miles and serviced regularly. $8,900 later it needs a new transmission. This is a huge safety problem that's being ignored.

NHTSA ID

11753340

Incident

Feb 5, 2026

The contact owns a 2021 Ford Expedition. The contact stated that while the vehicle was parked, the message "Transmission Shifter Failure" was displayed on the instrument panel, and the vehicle independently accelerated. A dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that a recall for the failure would be available in April 2027. The failure mileage was approximately 120,000.

NHTSA ID

11753034

Incident

Jul 27, 2026

Mileage

120,000 mi

On several occasions the vehicle will act like it misses a gear when put under load. Example is when you go to pass a vehicle and accelerate the vehicle will just rev up and not speed up. You then have to let the vehicle slow down and sort of get itself back into the right gear and you can go. Another example is taking off from a stop it will also do the same thing causing you to be pulling out into traffic and loosing power. Both of these scenarios are life threating as in both scenarios you could be faced with either on coming traffic or traffic coming at a high rate of speed behind you.

NHTSA ID

11753011

Incident

Jul 13, 2026

I am filing this complaint because I truly believe this transmission issue is a safety problem. I was driving my 2021 Ford Expedition and was merging onto a busy highway when I pressed the gas to get up to traffic speed. Instead of accelerating, the engine revved but the transmission would not shift. It felt like the vehicle was stuck between gears or in neutral. My SUV would not accelerate when I needed it to, and I remember thinking, “This is how someone gets hit.” As a mom, it was terrifying. I depend on my vehicle to safely get my family where we need to go. When you press the gas while merging into fast-moving traffic, you expect your vehicle to respond. Mine didn’t. I was left trying to merge while traffic was approaching and my SUV would barely move. Before this happened, I had noticed increasingly harsh shifting and delayed gear changes. The vehicle had been properly maintained, and the transmission had recently been serviced. After the incident, an authorized Ford dealership diagnosed the transmission with a failed CDF drum in the 10-speed transmission. The transmission had to be completely rebuilt. After researching this problem, I found many other Ford owners reporting the exact same failure and the same scary symptoms. This doesn’t seem like normal wear and tear. Losing the ability to accelerate without warning is a serious safety concern, especially when merging onto a highway or crossing an intersection. I hope NHTSA investigates this issue before someone isn’t as lucky as I was. I was fortunate to avoid an accident, but I can’t help thinking another family may not be.

NHTSA ID

11752114

Incident

May 14, 2026

The contact owns a 2021 Ford Expedition. The contact stated that while driving at various speeds, the gear shifter unexpectedly shifted to park(P). No warning light was illuminated. The failure was a recurring failure. The contact associated the failure with NHTSA Campaign Number: 26V402000 (Power Train). The dealer was not contacted. The manufacturer was made aware of the failure, and the issue was escalated. The failure mileage was approximately 60,000.

NHTSA ID

11751578

Incident

Feb 20, 2026

Mileage

60,000 mi

The transmission shifts erratic and will sometimes just kick out of gear. The car was taken to ford for repair and they flashed the transmission but, it did not repair it.

NHTSA ID

11751393

Incident

May 28, 2026

The vehicle first experienced severe, violent jerking and slipping when shifting between the 4th & 5th gears. The vehicle was held by a Ford dealership for 21 days for this issue, but the repair failed. Two months after being out of the shop the transmission has rapidly degraded and is now actively experiencing the same severe, violent jerking and failing to engage in every single gear except 10th. The vehicle completely loses acceleration power while driving, creating an immediate crash hazard. Dealerships in my area are refusing to accept the vehicle for 2 to 3 weeks due to scheduling backlogs, leaving me with an active, dangerous powertrain failure under warranty.

NHTSA ID

11750935

Incident

Jul 16, 2026

I have a 2021 Ford Expedition Max that we purchased new. From the time we first purchased it, it has had an intermittent issue. During these times if I accelerate hard or try to give gas to go up a hill, it will occasionally act like it is losing power- like it drops into neutral and stops accelerating. If I do not let off of the gas immediately, it is followed by a loud metallic rattling/ grinding noise. If I release the accelerator, it recovers quickly and seems to “reset” and I’m able drive like normal. On a few occasions a brief warning has popped onto my dash but it goes away so quickly that I never know exactly what it said. It MAY have said something related to parking but I can’t recall what I’ve seen before it goes away. I’ve learned to adjust my driving, making as few hard accelerations as possible to avoid this. Sometimes they can’t be avoided. It becones scary when I’m trying to merge or have to make a quick turn to get into a break in traffic because when it happens at those times I’m not able to accelerate to avoid the oncoming traffic. It doesn’t do it every time but seems to do it more the more I’ve driven like longer trips and I believe it’s gotten more frequent over time despite my adjustments in driving. Last year a Ford dealership looked at it and we thought the recall they fixed might fix it but it did not. Now they’ve reproduced the issue and diagnosed DTC P07E6 referencing TSB 23-2249 and saying the transmission needs replaced. I am aware of NHTSA Recall 26V402 (Ford 26S48) involving similar vehicles with transmission/park system concerns. Although my VIN is not currently included, the similarities prompted me to submit this complaint in case my vehicle represents the same or a related safety issue. I don’t have the official diagnostic report yet as the dealership still has my vehicle but I’ll include a photo of my conversation with the dealership,

NHTSA ID

11750488

Incident

Jul 15, 2021

COMPONENT: 2021 Ford Expedition Max 10R80 transmission. The CDF clutch cylinder (7H351) sleeve exhibits axial movement, breaking the clutch apply-pressure seal so commanded torque is not transmitted to the wheels. Engine revs while the vehicle fails to accelerate or move forward. Vehicle is available for NHTSA inspection and testing. INCIDENTS (7/5/2026, same drive cycle): (1) Highway — after braking from a 60 mph cruise to a 15-20 mph roll, the transmission failed to engage any gear on re-acceleration. (2) City — at 35 mph while accelerating to merge lanes, the transmission again failed to engage a gear. Engine 205-220F, Trans 200-210F, Indicated Gears 4th/5th, Odometer 120,217. Second owner; purchased at 115,067 mi. SAFETY: Sudden, unannounced loss of forward propulsion with no dash warning directly endangers my wife, my children, and other motorists during ordinary driving. Merging: stuck at 40-50 mph in 65-80 mph traffic invites a high-differential rear-end impact. Intersections/left turns: a mid-turn stall exposes the passenger side (where my family sits) to a T-bone at posted speed. Evasive maneuvers: failed acceleration converts a near-miss into an unavoidable collision. Grades: the ~7,000-lb SUV can roll backward or stall in-lane on short-sight-line hills. Towing (rated capacity) magnifies every risk to trailer and following traffic. Shoulder stranding invites secondary collisions, a known highway-fatality cause. The defect is unpredictable — I cannot pre-empt merges, intersections, hills, or tows. DEALER/INDEPENDENT CONFIRMATION: None. I have not brought the vehicle in for service, to avoid compromising any NHTSA inspection or testing. MFR/POLICE/INSURANCE INSPECTION: None; no crash has occurred to this date. PRIOR WARNINGS: None. No lamps, messages, or symptoms preceded these failures, which first occurred 7/5/2026. Ford has documented awareness of the 10R80 CDF clutch cylinder design defect and has not issued a recall (TSB 23-2250).

NHTSA ID

11748400

Incident

Jul 5, 2026

COMPONENT: 2021 Ford Expedition Max 10R80 transmission. The CDF clutch cylinder (7H351) sleeve exhibits axial movement, breaking the clutch apply-pressure seal so commanded torque is not transmitted to the wheels. Engine revs while the vehicle fails to accelerate or move forward. Vehicle is available for NHTSA inspection and testing. INCIDENTS (7/5/2026, same drive cycle): (1) Highway, after braking from a 60 mph cruise to a 15-20 mph roll over a few hundred feet, the transmission failed to engage any gear on re-acceleration. (2) City, at 35 mph while accelerating to merge lanes, the transmission again failed to engage a gear. Engine 205-220F, Trans 200-210F, Indicated Gears 4th/5th, Odometer 120,217. Second owner; purchased at 115,067 mi. SAFETY: Sudden, unannounced loss of forward propulsion with no dash warning directly endangers my wife, my children, and other motorists during ordinary driving. Merging: stuck at 40-50 mph in 65-80 mph traffic invites a high-differential rear-end impact. Intersections/left turns: a mid-turn stall exposes the passenger side (where my family sits) to a T-bone at posted speed. Evasive maneuvers: failed acceleration converts a near-miss into an unavoidable collision. Grades: the ~7,000-lb SUV can roll backward or stall in-lane on short-sight-line hills. Towing (rated capacity, used regularly) magnifies every risk to trailer and following traffic. Shoulder stranding invites secondary collisions, a known highway-fatality cause. The defect is unpredictable. I cannot pre-empt merges, intersections, hills, or tows. DEALER/INDEPENDENT CONFIRMATION: None. I have not brought the vehicle in for service, to avoid compromising any NHTSA inspection or testing. MFR/POLICE/INSURANCE INSPECTION: None; no crash has occurred to this date. PRIOR WARNINGS: None. No lamps, messages, or symptoms preceded these failures, which first occurred 7/5/2026. Ford has documented awareness of the 10R80 CDF clutch cylinder defect and has not issued a recall.

NHTSA ID

11748398

Incident

Jul 5, 2026

While driving down the highway at 70 miles an hour, the transmission popped out of gear the engine revved, and when the transmission went back into gear, it engaged into second gear and locked up the rear tires on the highway. I believe this is due to the CDF drum bushing, causing Line pressure problems. But this has almost caused me in my family to get into an accident.

NHTSA ID

11747807

Incident

Jun 28, 2026

The transmission seems to be sluggish. When making a rolling left turn around 25 to 30 mph after no power to the transmission, when coming out of the turn the trans seems to spin and then slam into gear. I mean slam where everyone in the vehicle says "what the hell was that" kind of slam. This has been intermittent since I purchased the vehicle 1 1/2 years ago at 79,000 miles. I've had the trans fluid changed and that doesn't help. Now at 103,000 it seems to happen more often. I see there are a lot of people in the same boat for multiple years. Shame on Ford. This is my first return to American made since 2 Honda Pilots that ran great until I sold them at 150,000 miles. This is a known issue that is not being resolved by design. Each year their culpability is decreased by the junk yard methodology. Shame on me for buying American.

NHTSA ID

11745890

Incident

Jan 31, 2025

I have taken my car to the shop for constant transmission clunking, loss of power, random shifting causing a safety issue. It is currently in the shop for the 6th time at 69k I bought it new and have taken it in 5 other times for the same or similar issues with the transmission.

NHTSA ID

11745853

Incident

Jun 4, 2021

Hard Shifting & Slipping: Drivers frequently report clunking, hard shifts (particularly around gears 3-5), and the vehicle lurching forward when accelerating. It does this while driving and is a serious safety issue.we complained to the dealer about a year ago and they told us they checked and it was fine. Now it is worse.

NHTSA ID

11744638

Incident

Jun 15, 2026

The contact owns a 2021 Ford Expedition. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted and the vehicle jerked abnormally. The contact stated that there was an abnormal sound coming from the vehicle with the Check Engine warning light illuminated. The failure was persistent. The vehicle was taken to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure but provided no assistance. The contact was informed that the repair was not covered under recall. The failure mileage was approximately 62,500.

NHTSA ID

11744477

Incident

Apr 16, 2026

Mileage

62,500 mi

Bad parts in the transmission the cdf drum part is not good. While on the highway I was driving and my car lost all power and for about 5-6 seconds lost all power to the car until the transmission kicked into gear. I have has it in for a warranty and they keep saying it nothing then final it went back in and they tell me it the cdf drum in the transmission but this is not a safety concern. It is to me I have 2 kids and if something happens and causes a accident and something happens to my daughter who is replacing my kids no one and Ford will wipe there hands from it. A mandatory recall needs to happen on these transmission and get them fix properly. They did a recall for a piece of trim that cuts when it is lose but they can't do it on this. Unbelievable

NHTSA ID

11743288

Incident

Jun 5, 2026

“10R80 transmission slips and loses power during acceleration. Matches Ford TSB 23‑2250. Sudden loss of propulsion creates safety risk when merging or crossing intersections.”

NHTSA ID

11741867

Incident

Jun 1, 2026

When attempting to pass or slowing and then pressing the gas regain speed, transmission disengages, engines revs, transmission down shifts to 1st gear and then attempting to "find" the correct gear. This has happened multiple times and a few of those times has left us susceptible to being struck by another vehicle due to no engine power to the power train to move the vehicle.

NHTSA ID

11738650

Incident

Mar 26, 2026