2014 Ford F-150 acceleration problems

Filed Oct 30, 2026 · Acceleration, Transmission · IN

**VEHICLE SAFETY INCIDENT REPORT & RECALL FAILURE COMPLAINT** **1. COMPONENT FAILURE & INSPECTION** * **System:** 6R80 Transmission Molded Lead Frame Assembly / Output Speed Sensor (OSS). * **Failure:** Intermittent OSS signal loss caused the Powertrain Control Module (PCM) to misread vehicle speed and command an uncommanded, severe downshift from 5th gear directly into 1st gear. * **Inspection Availability:** Vehicle is currently located at the Ford dealership service center and is available for immediate physical and electronic inspection upon request. **2. SAFETY HAZARD & INCIDENT DETAILS** * **Risk:** Severe risk of high-speed rear-end collision, loss of control, and catastrophic injury. * **Incident:** On October 29, 2026, while driving 45 mph on an active highway, the transmission abruptly downshifted to 1st gear without driver input. This caused instantaneous rear-wheel lockup and tires screeching, bringing the truck to a complete halt in live traffic. * **Prior Symptoms:** Following the dealer-mandated software update for Recall 24S37 / 24V444, the truck experienced 5 documented transmission dropouts (5th to 1st gear) with an illuminated Wrench / Service Engine Light. **3. RECALL FAILURE & REMEDY DISPUTE** * **Recall Involved:** Recall 24S37 / the federal safety agency 24V444 (Issue Date: June 14, 2024 - 6R80 Sudden Transmission Downshift PCM Reprogramming). * **Defect/Failure:** The dealership completed Recall 24S37 (PCM software reflash). However, the software fix failed to eliminate the hazard, resulting in full rear-wheel lockup at 45 mph. * **Current Status:** The servicing dealer confirmed the lead frame must be replaced, but refuses recall/warranty coverage and is forcing out-of-pocket payment because diagnostic trouble codes were not active during the initial software flash months ago. The software remedy failed to remediate the unsafe condition, and hardware replacement is required to restore vehicle safety.

Filed Oct 13, 2026 · Acceleration, Transmission · TX

I own a 2014 Ford F-150 equipped with the 6R80 six-speed automatic transmission (VIN: [XXX]), currently at approximately 133,000 miles. On XXX, while driving at ~70 mph on [XXX], my truck experienced an abrupt, unintended downshift — the precise failure mode described in Recall 24S37. The software patch prevented it from making it worse and a orange wrench came across the dashboard, but still it required some evasive maneuvering. I proceeded directly to the dealer to investigate; however, they were booked for the day. Not understanding the full impact I left to come back in the morning. The vehicle eventually became unsafe to operate, would not start, and had to be towed to Gullo Ford. The dealer then pulled diagnostic trouble codes, confirmed the transmission lead frame had failed, and replaced the lead frame at my expense of $1,977.04 (2127.04 with a coupon of 10% off) (invoice and repairs completed enclosed). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 21, 2026 · Acceleration, Transmission · GA

My 2014 Ford F-150 was previously included in Ford Safety Recall 24S37 regarding unintended transmission downshifts caused by an intermittent Output Shaft Speed (OSS) sensor issue. The vehicle was inspected by a Ford mobile technician on January 20, 2026. No qualifying codes were found at that time, and the recall was closed under my VIN. The recall involved the risk of an unintended downshift into first gear that could result in loss of vehicle control. On August 20, 2026, while my husband was driving approximately 40-50 mph, the truck suddenly downshifted and rapidly lost speed. The vehicle would not accelerate beyond approximately 10-15 mph and had to be moved into a parking lot to avoid remaining in traffic. After parking, the truck would no longer move under its own power. The wrench warning light illuminated and the vehicle became undrivable. The symptoms experienced appear substantially similar to those described in Recall 24S37. The dealership has indicated that the current failure may involve the transmission lead frame and speed sensor system, but I am concerned that this event may be related to the same transmission downshift condition addressed by the recall. I am requesting that the federal safety agency document and review this incident.

Filed Jul 26, 2026 · Acceleration, Electrical · OH

I was driving on the highway at about 60-70 mph and my truck shifted into first gear with my tires basically locking up and slid along the highway. I brought my truck into a ford dealership and they told me they couldn’t get it to replicate the incident so they turned me away. I personally replaced my battery terminals and it hasn’t done it again. Now I will be driving and randomly my truck will rev bomb and my gauge cluster will shut off and it shows up with an orange wrench symbol but when I turn the car off it resets. The research I’ve done it can come from a speed sensor or the lead frame. I know 2014 fords have a recall on transmissions but my truck does not have a documented one but there is something funky going on with it.

Filed Jul 15, 2026 · Acceleration, Transmission · UT

On July 2, 2026, the vehicle was brought to an authorized dealer for a scheduled appointment to resolve active Safety Recall 26S45 / the federal safety agency Campaign 26V378 (6R80 transmission sudden downshift defect). The dealership refused to perform the recall software update, claiming it was not needed for the vehicle. On July 12, 2026, while traveling at highway speeds on a public highway, the transmission suffered the exact un-commanded sudden downshift described in the recall. The violent mechanical force instantly snapped the rear driveshaft in half and severed the undercarriage air conditioning lines, creating a sudden, life-threatening loss of control and wheel speed reduction on a live highway. The vehicle is now permanently disabled due to the dealer's refusal to fulfill a federal safety mandate.

Filed Jul 14, 2026 · Acceleration · NJ

I am the owner of a 2014 Ford F-150 that is experiencing sudden, unexpected downshifts into a lower gear while driving at highway speed. This has happened on multiple occasions and has nearly caused accidents, including loss of vehicle control momentarily. This defect matches the description of Ford safety recall 26S45 (loss of signal between the transmission output shaft speed sensor and the powertrain control module, causing unexpected downshift into first gear). Despite this, my vehicle was not included when I checked recall status, even though I have an open Ford claim number: Cxh-08412521-F6L5j4. I am filing this complaint to ensure this incident is on record given the ongoing safety risk, and to request that the federal safety agency confirm whether my VIN should be captured under recall 26S45 or a related campaign (24S37/24V444). Description: Transmission suddenly and dramatically downshifts at highway speed without warning, causing loss of vehicle control and near-accidents.

Filed Jun 23, 2026 · Acceleration, Electrical · AZ

Hello, I recently brought my 2014 Ford F-150 (VIN: [XXX]) to the dealership regarding Recall 24S37. The vehicle experienced the following symptoms: • Check Engine Light illuminated. • Wrench Light illuminated. • Intermittent loss of power. • Abnormal transmission behavior. • Intermittent no-start condition. • Vehicle would only start after moving the gear selector. The dealership informed me that no physical repairs would be performed because the diagnostic trouble codes retrieved were different from those associated with Recall 24S37. However, the vehicle continues to exhibit transmission-related symptoms, and I am concerned that the underlying condition may be related to or aggravated by the conditions addressed in Recall 24S37. I am requesting that Ford review this case and determine whether additional diagnostic evaluation or repairs should be considered. However, they refuse to accept that the codes have anything to do with the recall, even though it is the same part and the affected sensor that is triggering the error codes on the scanner. They are asking me to pay for the transmission repair because the codes are not the ones approved for the recall, but based on the signs and symptoms the truck is showing, it is a chain reaction that triggered the previously mentioned failures. Thank you INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 11, 2026 · Acceleration, Electrical · TX

My 2014 Ford F-150 is exhibiting symptoms consistent with the Ford transmission molded lead frame safety recall 24S37. While driving approximately 55 mph late at night on a five-lane roadway, the vehicle suddenly and violently jerked, downshifted and came to a complete stop becoming stalled out as I was approaching a major traffic intersection. The truck was disabled in traffic and would not restart for approximately 2-3 minutes, leaving me stranded in an active travel lane and at risk of being struck from behind by another vehicle at high speed. The vehicle has displayed transmission-related symptoms including inability to correctly indicate gear position, harsh shifting, unexpected downshifts into 1st gear while driving, transmission fault warnings, and check engine lights. Initially it was mostly dying while idling and we thought it was the common "Fuse 27" issue, being unaware of the recall. Then the condition reproduced multiple times and symptoms worsened dramatically. Ford dealership inspected the vehicle. According to the technician's written report, the truck was found to be "having transmission problems, unable see what gear the truck is in and shifts to 1st gear while driving" and recommended replacement of the molded lead frame. The dealership confirmed transmission-related diagnostic trouble codes were present and documented symptoms consistent with lead frame failure. Despite the recommendation of the lead frame replacement and documenting symptoms consistent with the safety recall, the repair was not approved. The vehicle continues to experience symptoms associated with the recalled defect and is unsafe to drive away. Dealership confirms software update will not correct problem. I am submitting this complaint as the transmission defect poses a significant safety hazard to me, my children, and other drivers due to unexpected downshifts, loss of power, stalling, and the risk of becoming disabled in traffic. The truck remains available to inspect

Filed May 5, 2026 · Acceleration, Transmission · CA

I have had the 24S37 recall applied to my truck it was a software update, after the update it was ok for about a month then the problem became worse than it was before the software update. My truck is now downshifting and locking up the rear wheels and dose not shift sometimes and skips gears. This problem is getting worse everyday. I talked to the Ford dealership by my house and they told me I needed to buy a new transmission from them and there was no remedy for my problem other than the new transmission. I noticed the are recalling the 2015 trucks with the same transmission problem. Will my truck be added to the recall ? I have the same transmission

Filed Mar 4, 2026 · Acceleration, Engine · TX

Two separate times, driving at highway speed, the truck shifted into first gear and I had to pull over. A wrench symbol also popped up where the speed is usually displayed.