2017 Ford F-150

On March 21, 2025, NHTSA’s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE25002) to investigate instances of unexpected transmission downshifting without driver input in model year (MY) 2015-2017 Ford F-150 vehicles (subject vehicles) manufactured by Ford Motor Company (Ford). The complaints allege that, without warning or driver input, the subject vehicles experienced a sudden and rapid deceleration often accompanied by temporary rear wheel lockup, seizure, or skidding, resulting in a loss of vehicle control that increases the risk of crash and injury to all motorists, including those not within the subject vehicles. The MY 2015 and MY 2016 F-150 vehicles were equipped with the “6R80” transmission, while the MY 2017 vehicles were equipped with either the “6R80” transmission or the “10R80” transmission. This investigation was limited to MY 2015-2017 Ford F-150 with the “6R80” transmission. ODI identified 329 Vehicle Owners Questionnaires (VOQs) related to this investigation and sixty percent of these consumers were interviewed to confirm the details of their allegations. Consumers reported that their vehicles’ transmission suddenly downshifted to a lower gear, often to 1st or 2nd gear, without driver input or advance warning. Consumers described the downshift events to be regular and repeated occurrences, with some consumers stating that they no longer drive the vehicle due to safety concerns. Forty-three percent of consumers reported experiencing at least one wheel lockup event, during which the rear tires locked, screeched, or skidded during the transmission downshift.  ODI also found that 114 of the 329 consumers reported having their vehicle’s molded lead frame or valve body assembly (which comes with a molded lead frame) replaced, 80 of which were confirmed through consumer submitted repair invoices. In its response to ODI’s Information Request, Ford provided an assessment of potential root cause of failure for the subject vehicles and how this failure is different from the failure associated with MY 2011-2014 Ford F-150 vehicles that was addressed by four safety recalls (16V-248, 19V-075, 19V-433, and 24V-444). Ford has identified that the defect in the recalled vehicle population involved lead frame supplier production issues resulting in signal loss from the Output Shaft Speed (OSS) sensor. Ford has identified that the alleged defect in the subject vehicle population involved degradation of electrical connections within the lead frame due to thermal cycling and vibration over extended time in service resulting in signal loss from the Transmission Range Sensor (TRS). Signal loss from the TRS can result in an unintended shift to neutral, unintended upshift, or unintended downshift which are regulated by a gear “shift map” based on the vehicle’s speed at the time of signal loss. According to Ford’s “shift map”, at speeds between 35-64 mph, the maximum allowable downshift would be to 2nd gear (i.e. a 6th to 2nd gear downshift event) which Ford has designated to represent the worst-case scenario for subject vehicles. Ford has also acknowledged that the worst-case scenario may also involve temporary wheel lockup. However, Ford has stated that the failure mechanism in the MY 2011-2014 F-150 vehicles—previously addressed through recalls—primarily involved OSS sensor signal loss that could result in 6th to 1st gear downshift events. This OSS-related failure mode is distinct from the TRS-related signal loss identified in the subject vehicle population. ODI has identified an additional potential safety defect associated with the alleged defect in the subject vehicles. Preliminary testing performed by NHTSA’s Vehicle Research Test Center (VRTC) showed that when the TRS experiences an intermittent signal loss, one possible outcome is a change in vehicle direction. Specifically, if a vehicle is operating in reverse up an incline when the TRS signal loss occurs, then the vehicle may shift into neutral causing the vehicle to change directions and roll forward. ODI is opening this Engineering Analysis (EA) to, among other things, perform component-level testing and vehicle testing, as well as review additional technical information to better understand the alleged defect that has been identified. To review the reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On March 21, 2025, NHTSA’s Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE25002) to investigate instances of unexpected transmission downshifting without driver input in model year (MY) 2015-2017 Ford F-150 vehicles (subject vehicles) manufactured by Ford Motor Company (Ford). The complaints allege that, without warning or driver input, the subject vehicles experienced a sudden and rapid deceleration often accompanied by temporary rear wheel lockup, seizure, or skidding, resulting in a loss of vehicle control that increases the risk of crash and injury to all motorists, including those not within the subject vehicles. The MY 2015 and MY 2016 F-150 vehicles were equipped with the “6R80” transmission, while the MY 2017 vehicles were equipped with either the “6R80” transmission or the “10R80” transmission. This investigation was limited to MY 2015-2017 Ford F-150 with the “6R80” transmission. ODI identified 329 Vehicle Owners Questionnaires (VOQs) related to this investigation and sixty percent of these consumers were interviewed to confirm the details of their allegations. Consumers reported that their vehicles’ transmission suddenly downshifted to a lower gear, often to 1st or 2nd gear, without driver input or advance warning. Consumers described the downshift events to be regular and repeated occurrences, with some consumers stating that they no longer drive the vehicle due to safety concerns. Forty-three percent of consumers reported experiencing at least one wheel lockup event, during which the rear tires locked, screeched, or skidded during the transmission downshift.  ODI also found that 114 of the 329 consumers reported having their vehicle’s molded lead frame or valve body assembly (which comes with a molded lead frame) replaced, 80 of which were confirmed through consumer submitted repair invoices. In its response to ODI’s Information Request, Ford provided an assessment of potential root cause of failure for the subject vehicles and how this failure is different from the failure associated with MY 2011-2014 Ford F-150 vehicles that was addressed by four safety recalls (16V-248, 19V-075, 19V-433, and 24V-444). Ford has identified that the defect in the recalled vehicle population involved lead frame supplier production issues resulting in signal loss from the Output Shaft Speed (OSS) sensor. Ford has identified that the alleged defect in the subject vehicle population involved degradation of electrical connections within the lead frame due to thermal cycling and vibration over extended time in service resulting in signal loss from the Transmission Range Sensor (TRS). Signal loss from the TRS can result in an unintended shift to neutral, unintended upshift, or unintended downshift which are regulated by a gear “shift map” based on the vehicle’s speed at the time of signal loss. According to Ford’s “shift map”, at speeds between 35-64 mph, the maximum allowable downshift would be to 2nd gear (i.e. a 6th to 2nd gear downshift event) which Ford has designated to represent the worst-case scenario for subject vehicles. Ford has also acknowledged that the worst-case scenario may also involve temporary wheel lockup. However, Ford has stated that the failure mechanism in the MY 2011-2014 F-150 vehicles—previously addressed through recalls—primarily involved OSS sensor signal loss that could result in 6th to 1st gear downshift events. This OSS-related failure mode is distinct from the TRS-related signal loss identified in the subject vehicle population. ODI has identified an additional potential safety defect associated with the alleged defect in the subject vehicles. Preliminary testing performed by NHTSA’s Vehicle Research Test Center (VRTC) showed that when the TRS experiences an intermittent signal loss, one possible outcome is a change in vehicle direction. Specifically, if a vehicle is operating in reverse up an incline when the TRS signal loss occurs, then the vehicle may shift into neutral causing the vehicle to change directions and roll forward. Based on NHTSA’s analysis of consumer data, information provided by Ford, and preliminary testing conducted by NHTSA’s VRTC, this Preliminary Evaluation is being upgraded to an Engineering Analysis (EA26001). During this Engineering Analysis, the agency plans to, among other things, perform component-level testing and vehicle testing, as well as review additional technical information to better understand the alleged defect that has been identified from this Preliminary Evaluation. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

On June 18, 2018, the Office of Defects Investigations (ODI) opened a Preliminary Evaluation (PE18-008) to investigate complaints alleging post-crash fires at the B pillar in the area of the seat belt pretensioners on MY 2014-2018 Ford F-150 Regular Cab, and Super Crew Cab Vehicles. On August 24, 2018, Ford Motor Company recalled (FSA 18S27 - NHTSA #18V568) the affected population. Ford's investigation found that some front seat belt pretensioners may generate sparks during deployment in excess of Ford's specification. Sparks in the pretensioner exhaust gases inside the lower portion of the B-pillar may subsequently ignite combustible components contained in the B-pillar, such as insulation or carpet, and may cause a subsequent vehicle fire. ODI also requested relevant information from other manufacturers to assess the potential scope of post-crash pretensioner fires. Ford will notify owners and require dealers to remove B-pillar insulation material and wiring harness tape, and install heat resistant tape, free of charge. The recall notification began September 28, 2018.Owners may contact Ford customer service at 1-866-436-7332.The VOQs associated with the closing of this investigation are: 11143035, 11130056, 11129828, 11128761, 11127993, 11127880, 11124717, 11123419, 11119651, 11119626, 11114065, 11113160, 11111822, 11097937, 11078447, 11014688

My transmission has been slipping. To the point where it has made me stop, especially on hills and in cold. 10 Spd auto. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11764452

Incident

Feb 20, 2026

After a big freeze my fuel level gauge stopped working. I have replaced every sensor and fuse possible, along with multiple new fuel pumps. It has been taken to a certified Ford Dealership and they can’t find the problem. There is a Ford recall that already explains the problem exactly. It is Ford 26C26. I am not able to get my vehicle inspected and without knowing exactly what my fuel level is it could leave me stranded.

NHTSA ID

11764215

Incident

Feb 15, 2023

The contact owns a 2017 Ford F-150. The contact stated that the vehicle was previously repaired under NHTSA Campaign Number: 26V237000 (Power Train); however, the failure occurred after the recall repair. The contact stated that while driving at an undisclosed speed, the transmission started slipping. The dealer was made aware of the failure and informed the contact that a diagnostic test was needed to determine the cause of the failure. The failure mileage was approximately 93,000.

NHTSA ID

11764048

Incident

Sep 4, 2026

Mileage

93,000 mi

The contact owns a 2017 Ford F-150. The contact stated that the air bag warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the clock spring needed to be replaced. The contact associated the failure with NHTSA Campaign Number: 23V847000 (Steering, Air Bags); however, the contact was informed that the VIN was not included in the recall. The manufacturer was notified of the failure by phone, but no assistance was provided. The contact was referred to the NHTSA Hotline and to the DMV for assistance.

NHTSA ID

11763620

Incident

Sep 11, 2025

The torque converter has malfunctioned and the vehicle is currently at the dealership for repairs. The truck experiences significant vibration and shuddering at speeds above 45 mph. There is an existing recall for this exact issue; however, our VIN is not included in the affected vehicle population. With only 60,000 to 70,000 miles on the truck and less than 10 years of service, a major component such as the torque converter should not require replacement, especially on a vehicle that has been properly maintained throughout its life.

NHTSA ID

11763384

Incident

Aug 3, 2026

My vehicle's transmission changed gears suddenly and unexpectedly causing a slight difficulty to control. Following the sudden gear change, some lights on the dashboard began flickering erratically. I have video of the dashboard after the gear change. For this incident, I was driving about 25 MPH. I experienced similar behavior before and at highway speeds. Since then, the vehicle was serviced by Ford for a Safety Recall Notice 26S28/NHTSA Recall 26V237. The service performed under the recall did not fix the problem. The local Ford dealer told me they would charge me to have the problem investigated, so I have not brought the vehicle in to them.

NHTSA ID

11763161

Incident

Sep 5, 2026

The contact owns a 2017 Ford F-150. The contact stated that while driving 60 MPH, the contact attempted to stop the vehicle, but the vehicle failed to stop as needed and the braking distance became extended. Additionally, the brake pedal was firm while depressed. The contact received notification of NHTSA Campaign Number: 25V236000 (Service Brakes, Hydraulic); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the dealer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted by phone and was made aware of the failure.

NHTSA ID

11763091

Incident

Feb 15, 2026

In 2025 my 2017 Ford F-150 started randomly downshifting. We took the car to the ford dealer who could not assess what the problem was exactly (Rowe Ford in Westbrook, Maine). They suggested a new transmission to be safe and clearly indicated that this was not a safe truck to drive at the time. We took the truck to another ford dealer to try to get an actual determination of what was wrong (Casco Bay Ford, Maine). They also advised that no codes were being given but that the truck was clearly downshifting and not safe. With no real alternatives or clear problem, we paid $8,000+ for a new transmission. Then, months later we get the recall notice: (Campaign 26S28 / NHTSA Recall 26V237) - Ford F-150's were downshifting... We had Ford do the software update as this is now a new transmission, but when we asked about the Recall and if there was anything we could do about the $8,000 we just paid lower and upper management (we talked to both) advised that because they could not definitively put a label to the problem before we fixed the transmission that they could not attribute the downshifting to the same problem and so will not help or otherwise reimburse us for the cost of having to fix the problem that was recalled later. No remedy was offered by Ford.

NHTSA ID

11762793

Incident

Sep 1, 2026

Customer Satisfaction Program 26N04 Certain 2015-2017 Model Year F-150 Vehicles Equipped with a 6R80 Transmission Transmission Molded Leadframe Replacement

Harvest Program 25H05 – Supplement #1 Certain 2011-2021 Model Year Vehicles Software Verification Harvest Program

Advance Notice – Customer Satisfaction Program 25N17 Certain 2015-2025 Model Year Multiple Vehicle Lines Rear View Camera Replacement If Required After Dealer Evaluation

Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated wired keypad, the accessory wireless keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool or from the label printed on the body control module (BCM). The Factory Keyless Entry Code application within the diagnostic scan tool will not provide an applicable master code for the accessory wireless keypad. If the wallet card for an accessory keypad is not available, the "Wireless RF Keypad Diagnosis Guide" can be referenced and provides direction on how to retrieve the master code. This guide is located under the Workshop Manual tab > Accessories > Installation > Wireless RF Keypad Diagnosis Guide > PPT C > Step C2.<br /><br /> Note: The only available keypad for some vehicles from the assembly plant is the accessory wireless keyless entry keypad. The integrated wired keypad cannot be installed on vehicles not equipped from the factory with a wired keyless entry k

For 20172026 vehicles equipped with a 10R transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, located in Section 307-01 > Diagnosis and Testing. This updated procedure improves the diagnosis of customer reported transmission concerns and aids in locating the proper root cause. During diagnosis and testing, details regarding whether the condition is more prevalent when the vehicle is hot or cold, throttle percentage at the time of occurrence, vehicle speed, the specific shift involved, and whether the issue occurs during transmission engagements (N>R, N>D, R>D, or D>R) should be noted. Engineering requests including these detailed operating conditions that will significantly assist with root cause analysis. Diagnosis, testing, and repair should use established labor times outside this article.

Special Field Action 25L02 Certain 2017-2024 Model Year California Emissions-Certified Vehicles Transmission Control Assembly Reimbursement