2019 Ford F-150

10speed transmission knocking in and out of gear even trying to turn left is a major safety concern I’ve had times it knock out of gear and it revs on its own without my foot on the pedal and after about 10seconds it jumps into gear with seconds to spare of on coming traffic Ford knows about it I’ve had it looked at and they just did a “software update” for it to keep doing it what’s it going to take for them to fix the issue they built from driving 60mph going from 10th gear trying to engage 1st gear isn’t good

10R80 TRANSMISSION CDF DRUM FAILURE HARD SHIFT BETWEEN GEARS, SPORADIC GEAR CHANGING FROM 10TH TO 1ST GEAR. CAUSING TRUCK JERK LOOSE POWER WHILE DRIVING PUTTING DRIVER AND PASSENGER AT RISK. WENT TO A FORD DEAL FOR ASSEMANT AND CONFIRM THAT CDF DRUM BUSHING HAS SLIPPED AND OTHER ISSUE INTERNAL COMPONENTS FAILURE. NO ENGINE LIGHT SHOWING FROM ISSUE BUT THIS ISSUE STARTED IN 12/2025. FORD HAS KNOWN ABOUT THIS ISSUE AND NOT APPLY AS A SAFETY CONCERN. MY TRUCK HAS ONLY 54,000 MILES. THIS ISSUE SHOULD HAVE BEEN ADDRESSED AS A RECALL BY FORD FOR SAFETY.

I am reporting a safety-related defect involving the 10R80 transmission in my 2019 Ford F-150. The vehicle experiences erratic shifting and loss of power that appears to be caused by a known defect in the transmission’s CDF clutch drum assembly. Ford has issued TSBs for this problem (including TSB 25-2126), which describe axial movement of the CDF drum sleeve leading to hydraulic pressure loss. However, this issue has not been addressed through a recall. My vehicle exhibits symptoms consistent with this defect, including: •Harsh and unexpected shifts •Delayed engagement when accelerating •RPM flares and slipping between gears •Loss of power or hesitation during passing, merging, or turning •Sudden or unpredictable shift behavior that affects vehicle control These symptoms occur at random and create unsafe driving conditions, especially when entering traffic or making left turns. The loss of power and inconsistent shift timing can leave the vehicle unable to accelerate when necessary, which creates a potential crash hazard. This appears to be a widespread issue affecting Ford vehicles equipped with the 10R80 transmission from multiple model years. Many owners have reported the same symptoms, and transmission specialists have documented a design flaw in the original CDF drum, where the internal bushing moves out of position and causes hydraulic circuit failure. Ford has quietly released a revised CDF drum, which further indicates that the original design may be defective. Because this defect can cause unpredictable loss of power or abnormal shifting that affects driver control, I believe it constitutes a safety risk and should be investigated. A TSB does not ensure repair unless a failure is already happening, which puts drivers and the public at risk. I am requesting that NHTSA open an investigation into CDF drum failures in the 10R80 transmission and evaluate whether a recall is warranted.

(Current approx mileage of occurance 104,xxx -105,xxx)The transmission on my 2019 Ford F150 abruptly started to run really bad. The transmission started slamming gears, hard shifting, delayed shifting, delayed acceleration. The shifting was slamming to hard, that it felt like another vehicle hit me in the rear. I called a local Ford dealership on 1/7/2026 to make an appointment to get the software updated (TSB 21-2145), the earliest appointment I was able to get was 1/13/2026. I drove the truck again on Sunday (1/11/2026) for church, and upon returning home, the wrench icon appeared on my dash board. I did not drive the truck again until 1/13/26 for the appointment. I took the truck in on my appointment and shared my concerns with the technician about it being a bigger problem than a software update, and he assured me he would complete proper inspection and diagnostics. After the tech completed the software update (& reset shift tables) the truck drove worse. He informed me, he believes the truck will need a replaced transmission. On my way home the truck drove worse, Slamming gears harder, and hesitating worse, worse delayed acceleration. The truck is not safe to drive. I took it to another reputable transmission shop in town 1/15 for a 2nd opinion, and he concluded the same. Transmission needs to be replaced. The frustrating thing in all of this, is I had an extended warranty on the truck through 100k miles. I took the truck in to the local Ford Dealer for a full inspection at 99,xxx miles to verify all was good, and if it wasn't then I would like to use my warranty for repairs. I was given a bill of good health. And approx 5000 miles later, I now need a full transmission replacement? I am getting no-where with Ford. I even tried my insurance company, and am getting no help there either. I still owe a balance on my truck, and now I've got to figure out a $8k-11k repair.

Transmission is exhibiting harsh and delayed shifting which causes the vehicle to lurch, accelerate and decelerate at unexpected rates. These acceleration and deceleration issues present a hazard while driving to myself and other drivers as the vehicle can unexpected decelerate with out brakes being applied and cause a collision. The vehicle has been inspected by the dealership and they confirmed the symptoms and that internal components of the transmission are failing. The vehicle currently has 81,000 miles and should not be exhibiting this behavior. The issues started around October 2024 and resolved temporarily after a transmission fluid drain and fill but returned after approximately 2 weeks.

10R80 ten speed automatic transmission first exhibited indications of failure 9/16/2020, Ford's response being reprogram PCM. Transmission has progressively declined in reliability complete with harsh shifts, jerking, erratic up and downshifts, suddenly reverting into neutral at highway speeds. Safety of self, wife and other family members imperiled due to the vehicle suddenly lurching, jerking, and slamming forward in an unsafe manner at highway speeds. Ford dealerships have reprogrammed the transmission PCM four times over several years with progressively worsening transmission functionality. Dealership service specialist has confirmed that the transmission failure is due to internal components with burnt fluid as a component. But, Ford will not allow them to open the transmission up, denied repeatedly by the manufacturer as the issue with this 10R80 transmission is widespread with thousands of complaints filed, sone with NHTSA and others online and with Ford Customer Service to no avail. Ford is denying this manufacturer's defective transmission to avoid financial liability likely in the multi million dollar range over a wide array of Ford products with this faulty transmission installed in them. During the four times that Ford dealerships have reprogrammed the transmission's computer at the behest and mandate of Ford Motor Company, this vehicle's transmission repair was covered by both the manufacturers warranty as well as a privately purchased Ford Extended Service Plan (Extra Care). Ford chose deny coverage under either warranty though it is warrantied under both plans explicitly. This failure can result in vehicular accidents because of transmission's erratic and flawed functionality. Stranded on an interstate highway due to this failure especially is dangerous and may leave the vehicle exposed to collision.