2021 Ford Expedition

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.

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.

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.

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,

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).

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.

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.

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.