2021 Ford F-150 Hybrid engine problems

“While traveling home on a 2 lane highway 55 on a busy Sunday, the truck started misfiring and jerking, shaking then stalled. Engine light was flashing and we were able to pull off to side as it stalled. After a short time we proceeded on the highway, as we were in a precarious position, about 3 miles and it began misfiring and stalled again. This could have been a tragic situation had there not been a pullout with our travel trailer. We had to have our truck towed to the ford dealer and our RV towed home. While seeking similar cases online we believe it to be a fuel pump driver module and contamination. Our truck VIN is not currently on the national recall list and feel it should be.”

“The contact owns a 2021 Ford F-150. The contact stated that while driving 85 MPH, the vehicle stalled, the interior electronics shut off, a red truck symbol flashed in the bottom right corner of the instrument panel, and a buzzing sound occurred inside the vehicle. The driver pulled over to the shoulder after crossing eight lanes of traffic. The vehicle was restarted after one hour. The manufacturer was notified of the failure by phone. The failure mileage was approximately 88,000.”

“Experiencing total stop of acceleration in two occasions: 1) when putting the car in reverse and pressing the accelerator and 2) when making a left or right turn after a yield or stop. And when I say loss of acceleration, I don’t mean hesitation, reduced power, or sluggish acceleration. I mean absolutely ZERO acceleration. I’ll press the accelerator and nothing happens. The engine stays basically at idle, and the truck will not accelerate for roughly 5-10 seconds, regardless of how much accelerator I’m giving it. Then suddenly power comes back and the truck drives normally again. This happens with normal operating temps while driving most of the day. It got to a point where it happened once every day. Very scary stuff when you're pulling out into traffic - major safety concerns with oncoming traffic.”

“My 2021 Ford F-150 PowerBoost, VIN [XXX], is included in Ford recall 25S75 / NHTSA recall 25V455. The vehicle has stalled more than five times and is experiencing the same dangerous condition described in the recall. The Ford dealer told me I can bring the truck in, and they will diagnose the problem and repair it if they can. However, I must pay all costs upfront and then request reimbursement after Ford releases the official recall remedy. I should not be required to pay out of pocket for the diagnosis and repair of a known safety defect covered by an active recall. There is also no clear timeline for when a remedy will become available or when I would be reimbursed. I cannot reasonably be expected to pay now and potentially wait years to recover my money. This vehicle repeatedly stalls and creates a serious crash risk. I am requesting that NHTSA investigate Ford’s delay and require Ford to provide an immediate, no-cost diagnosis and repair or provide safe alternative transportation until the recall remedy is available.”

“I am reporting a safety-related transmission problem I experienced with my 2021 Ford F-150 equipped with the 10R80 automatic transmission. While driving normally, the transmission suddenly shifts hard/lags on gears 3-5 and sometime higher gears 7-9 at higher speeds. I’ve also noticed a buzzing/metallic rattling coming near the engine from inside. There is also times i can tell i have no power when trying to speed up and the other day i almost thought i was going to get T-Boned. This occurred while on my daily traffic commute to work, creating a potentially dangerous situation because the truck did not respond as expected when I needed predictable acceleration or propulsion. I believe this incident may be related to the known 10R80 CDF clutch-cylinder/sleeve problem. Ford technical information identifies axial movement of the CDF sleeve that can cause hydraulic-circuit leaks and harsh or delayed engagement and shifting. This condition can result in slipping, RPM flares, delayed engagement, unexpected gear changes, harsh downshifts, lurching, or loss of propulsion. This is a safety concern, not merely a transmission quality or reliability issue. Unexpected loss…”

“2021 Ford F-150 PowerBoost Hybrid, VIN [XXX]. At 112,000 miles — just 1,000 miles outside of warranty — the vehicle experienced catastrophic failure of the hybrid battery system. Ford's own technician diagnosed a short in the high voltage battery system that caused damage to the hybrid electric drive unit. Repair estimate is $19,000. Ford declined goodwill warranty coverage despite the vehicle being only 1,000 miles outside warranty and the failure occurring on a known problematic system. This is a $72,000 vehicle purchased new in 2021 that has suffered a catastrophic drivetrain failure at only 3 years old. The high voltage battery short and hybrid drive unit failure represent a potential safety hazard to drivers and other motorists.”