While driving at highway speed, transmission will downshift into 5th gear mostly, but at times down to 3rd gear. Street driving, it will at times downshift all the way down to 1st gear. Whenever switching from Drive to reverse, it won't go. Have to switch back and forth between the two until it engages. Noticed this issue doesn't happen until the transmission temperature is over 200?.

- Rockwall, TX, USA

On a regular and routine basis, the vehicle is known to have difficulty in shifting between 3rd and 5th gear. Often times, while shifting, the transmission will hesitate to shift before lurching into the next gear. The vehicle is equipped with a 10R80 transmission and has previously encountered issues with the Cam Phasers. Cam Phasers have been replaced, but no work has been performed on the transmission. Driver can replicate the issue on almost every drive.

- Cypress, TX, USA

The contact owns a 2017 Ford F-150. The contact stated while driving at an undisclosed speed, the transmission unintendedly downshifted. No further information was available. The vehicle was taken to an unknown dealer, where it was diagnosed that there were metal shavings inside the transmission, causing the transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 12,000.

- Gruetli Laager, TN, USA

While maintaining a fixed speed (~55mph) up a slight incline, the vehicle rapidly shifted from 6th gear to a lower (presumably 1st given rpm/torque change) gear. While in normal use at that speed in 6th gear, the torque converter is in a "locked up" (direct mechanical connection) state- the sudden gear change plus "locked up" torque converter caused the engine speed to rapidly jump past its "red-line." Unable to compensate for the instant change in torque, the rear wheels locked up and the truck began to slide- I was able to regain control of the vehicle as it slid off the road and come to a stop. No injuries. After stopping briefly to assess the situation, I got underway- it became quickly obvious that the transmission has sustained extensive damage in the incident as it began to "shudder" intermittently. Further research and testing by myself using consumer diagnostic tools revealed that the torque converter sustained damage, particularly in the internal clutch (the mechanism that allows for a direct engine to transmission connection at high speed for better fuel economy), which is now failing to fully engage and disengage at some speeds and causing the transmission to "shudder". This conclusion was reached by observing the "desired torque converter slip" (measured in rpm) and comparing to the "measured torque converter slip" during a variety of conditions. It is unclear to me what caused the sudden gear change, but it caused extensive (and expensive) damage to my vehicle. This problem presents a major safety concern to myself and other vehicles around me and could result in a crash if it occurs again. Other F150s (one body-style older I believe) with the same transmission had a similar recall recently- had this also been addressed by the manufacturer on the 15-17 trucks, this incident (and extremely costly repair) may have been prevented.

- Forestdale , MA, USA

Vehicle would downshift to 3rd or 1st gear and will not shift out of that gear at any speeds. Would happen at randomly at highway speeds or just from accelerating from a stop, causing dangerous speed changes while on highway. Turning engine/keys completely off and back on will reset the error. Service wrench light would also come on occasionally when this happens. This issue has been prevalent for the last few years since after hitting 60k miles mark. Inspection is available upon request. Issue cannot be reproduced on demand, only randomly. Issue has not been evaluated by any service technicians or dealerships or any other persons except myself using a diagnostics code scanner. Using a diagnostic scanner shows error code "P0722-00 Output Shaft Speed Sensor Circuit No Signal - Not Current DTC."

- Seaside, OR, USA

Truck shifted violently from 6th to 3rd gear while towing 7k lbs

- Drummonds, TN, USA

Transmission suddenly downshifts and when cold truck will not move

- Pace, FL, USA

Downshift is causing truck to jolt. Truck was previously taken to Ford dealer to repair this specific issue and was told it was repaired/resolved but keeps occurring.

- Indio, CA, USA

Transmission will change gears while driving. I can be driving 45 mph in traffic, truck will automatically shift and I'm now going 15 and cannot speed up. There is no warning lites on dash before issue occurs. Called dealership who had no solutions to offer. I cannot be the only one experiencing this issue from reading online forums and Ford needs to be held accountable for faulty equipment. This is a safety issue in traffic for my family.

- St Petersburg , FL, USA

We purchased this vehicle approximately 6 months ago. On our second long trip of owning it we noticed that when we would give it gas to pass vehicles it would down shift and up shift hard. No warning/error lights came on. We dud have a diagnostic check done but nothing came up. The mechanic at Nicely's said it could be the clutch bank? I read where these similar trucks are having the same issues with shifting and there are some recalls on them. Please help..my warranty was only good for 6 months therefore expired. Where and how to we go from here.

- Pagosa Springs, CO, USA

While driving vehicle at 60 mph transmission shifted unexpectedly to a lower gear increasing the rpm-??s on engine. Vehicle transmission would not operate normally after this incident. The orange colored warning -?? wrench-?? symbol instantly came on after this incident. I drove truck to a Ford Dealership that was close by and they replaced the lead frame component on the truck. See attachment for details of repair. This appears to have corrected the issue with the transmission.

- La Grange, NC, USA

My transmission is shifting gears on its own. Sometimes it will downshift and other times it will shift up. Ford denies this problem and wants to replace it for $8000.

- Lakeland, FL, USA

The contact owns a 2017 Ford F-150. The contact stated that while driving 65 MPH and accelerating to overtake another vehicle, the transmission unexpectedly downshifted, and the vehicle jerked hard and then shut off. The contact was able to coast to the side of the road, shift to park, and restart the vehicle. While driving 35 MPH, the rear wheels locked up momentarily and then continued moving. There were no warning lights illuminated. The vehicle was taken to a local dealer, who was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The contact called an independent mechanic to schedule an appointment. The manufacturer was not contacted. The failure mileage was approximately 72,000. The VIN was not available.

- Corpus Christi, TX, USA

1.) transmission downshifting slamming hard into 1st randomly while driving on freeway. 2.) transmission stuttering in 2nd, 3rd & 4th gear. 3.) wouldn't shift until into the high RPM's at normal acceleration. 4.) has put me at risk multiple times almost causing wreck to other drivers. 5.) service engine light randomly coming on and off 6.) had a 3rd party overhaul the transmission & torque converter back in April 3, 2024.

- Willis, TX, USA

Transmission will randomly downshift several gears, causing a major safety issue.

- Creve Coeur, IL, USA

After the 2nd year of owning the truck the transmission blew up. I paid out of pocket to replace the transmission in full & then now 4 years later the transmission blew up again. Timing chain is also broken & engine is failing. 2017 FordF150 Lariat Sport.

- Broken Arrow, OK, USA

The truck will spontaneously downshift when driving. This creates a intense bang and vibration in the vehicle with an instantaneous speed change of vehicle. It's quite scary when it happens. I don't believe that it's any good for the drive shaft or rear end with such a sudden instantaneous transmission shift. I fear for additional damage it to the vehicle and the existing drivetrain when this occurs and could cause an accident if someone is following too close to the back of me when this happens.

- South Wales, NY, USA

I have had transmission gear changes abruptly/rough on my 6 speed 2017 XLT F150. It seems to happen more often downshifting from 4th to 3rd gear. I reported this to dealer early after purchase when I still had factory waranty. Dealer inspected and answered that -??this is normal.-??

- Kissimmee, FL, USA

Loss of gear at highway speeds. Went from 10th gear to 1st. Tires locked up and an error for the drive train showed up on the dash. Pulled over, restarted vehicle and it seemed to work. This has happened 3 times since. I was luck that no vehicles were around me or I would have caused an accident and potentially chasing injury to myself, my family or another driver. Dealership was not able to locate issue. Told me to keep driving and report back when it happens again.

- Mechanicsburg, PA, USA

My transmission automatically downshifts sometimes which could cause me to lose control and is a big safety hazard.

- Elkmont, AL, USA