2015 Ford F-150 vehicle speed control problems

“The contact owns a 2015 Ford F-150. The contact stated that while driving 75 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. In addition, the check engine warning light illuminated, and the vehicle stalled. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure; however, the contact was requested to pay a diagnostic fee. The contact stated that due to the persistent failure, the contact was fearful of driving the vehicle. The contact stated that the failure had occurred four times. The manufacturer was made aware of the failure, and a case was filed. The contact referenced an unknown recall; however, the VIN was not included in the recall. The contact was advised to contact the NNHTSA Hotline to report the failure. The failure mileage was approximately 80,000.”

“i was driving my truck down the highway and all of a sudden my rears wheels locked up making me lose control of my truck take goodness i did'nt rollover no my transmission is shifting threw gears from 1st to 6th to 3rd this is my second f150 that i have had my old one had the same problem but my old one didnt lock up my tires my phone number is [XXX] [XXX] but please text because at work you cant use my phone my truck is parked in the garage im afraid to drive it need assistance in fixing it”

“Today, [XXX] while driving at highway speed this vehicle experienced a unrequested transmission downshift, from 6th to 3rd, causing unexpected rapid vehicle deceleration. I was located in the center lane of an Interstate and travelling at 70 mph when this incident happen which force the traffic behind me to take rapid accident avoidance actions. I did not hear any audible or see any visual warnings that this incident was about to happen. This vehicle will be taken to Starling Ford located at 3000 Cheney Hwy, Titusville, Fl 32780 on June 16, 2025.”

“The transmission jumps gears at any speed, I was researching the topic and saw the NHTSA is probing some F150s for a similar problem. And I was wondering if my vehicle was in the affected line of production.”

“I noticed in the fall of 2024 that my transmission stared shifting hard between 30-40 mph during acceleration. I had the local Ford dealership check out the issue and they stated I needed a new transmission and included an estimate. I decided to seek information from 2 independent transmission shops and they could not confirm that I needed the transmission replaced at that time. The vehicle has been driving fine and I recently started to notice the hard shift again at 30 mph. Every once in a while, when the hard shift occurs, it seems like I lose power to the drive train and my vehicle slows down to about 15 mph and vehicles need to go around me. It only lasts for a few seconds and then the acceleration will continue to drive normal. I do notice an increase in RPM's from time to time as well while shifting around 30 mph but does not feel like it is slipping. Once through this area of shifting, the vehicle operates normally shifting through other gears. There were no warning lights or other symptoms leading to this issue. I did notice that there was an article posted with a possible transmission issue from this year vehicle that is being investigated concerning…”

“I was traveling [XXX] near Liverpool, PA at 60mph, the truck flashed a quick code on the dash and then suddenly downshifted from 6th gear to 1st almost spinning the truck as the rear wheels locked up momentarily. It would not upshift past 3rd gear and had to travel 35 miles home like that. I called my local Ford dealer (Parsons) and they said bring the truck in for diagnostic testing, so I did. Meanwhile I searched the internet to see if others had the issue. Turns out they did, BUT my 2015 with the 6R80 was NOT in the recall notice. Ford said it was the lead frame and needed to be replaced. IF it was a known problem, why not inform owners of these trucks. That said, Ford wanted $1500 to fix it, BUT they did not have the part. So I drove the truck (never with my family in it ever again) after I cleared the code with my reader...again traveling [XXX] @ 75mph it downshifted IN TRAFFIC. Luckily I was in the right lane and made a quick move to the shoulder to avoid being run over. In Carlisle, PA there are hundreds of trucking companies and warehouses, so the truck traffic is very heavy. That was it. I searched out the part, paid for it myself and had a Ford…”