The largest recall of 2026 so far affects some of Ford’s most popular pickups and SUVs, with a fix coming via over-the-air update.
Ford Motor Company is recalling nearly 4.4 million vehicles across the United States due to a software defect that can cause trailer lights and brakes to fail unexpectedly, the National Highway Traffic Safety Administration announced Thursday.
The massive callback affects some of Ford’s best-selling models, including the F-150, F-250 Super Duty, Expedition, and Maverick, along with the Lincoln Navigator and the all-electric E-Transit van. Model years ranging from 2021 to 2026 are included in the recall.
At issue is a software vulnerability in the Integrated Trailer Relay Module (ITRM), a component that manages communication between the towing vehicle and any attached trailer. When a driver starts the vehicle, the module can sometimes fail to establish proper communication, causing the trailer’s turn signals, brake lights, and in some configurations, the trailer’s brakes themselves to stop working.
“These conditions result in a noncompliance with federal safety standards and can reduce a driver’s ability to control an attached trailer while making it less visible to other drivers,” Ford said in a statement.
The company emphasized that it is not currently aware of any accidents, injuries, or fires related to the defect. However, federal regulators warned that the malfunction “increases the risk of a crash”.
Which Vehicles Are Affected?
According to documents filed with NHTSA, the recall covers approximately 4,380,609 vehicles across seven nameplates. The breakdown includes:
- Ford F-150 (2021-2026): About 2.3 million pickup trucks produced between January 2020 and February 2026
- Ford F-250 Super Duty (2022-2026): Approximately 1.1 million heavy-duty trucks built from April 2021 to February 2026
- Ford Maverick (2022-2026): Roughly 412,000 compact pickups produced from February 2021 to February 2026
- Ford Expedition (2022-2026): About 318,000 full-size SUVs manufactured from April 2021 to February 2026
- Ford Ranger (2024-2026): Nearly 130,000 mid-size pickups produced between December 2022 and February 2026
- Lincoln Navigator (2022-2026): Approximately 75,000 luxury SUVs built from April 2021 to February 2026
- Ford E-Transit (2026): About 13,000 electric commercial vans manufactured from February 2025 to February 2026
All affected vehicles are equipped with the Integrated Trailer Module feature codes.
How Drivers Will Know There’s a Problem
Ford says that if the communication loss occurs, drivers will see clear warnings on their instrument panel. A “Trailer Brake Module Fault” message will appear, and the turn signal indicator will flash rapidly. In some cases, a “Blind Spot Assist System Fault” message may also be displayed.
The company estimates that only about 1% of affected vehicles actually exhibit the defect. The issue can occur with or without a trailer connected after the vehicle exits sleep mode, but the safety risk only applies when a trailer is attached.
Investigation Timeline
Ford’s Critical Concern Review Group first examined the issue on October 21, 2025, after learning of a software anomaly. The group initially closed the investigation on November 6, determining that the vehicle would be stationary when the fault occurs and that dashboard warnings would alert drivers before they began driving.
However, NHTSA raised concerns during a monthly review in December 2025. The agency indicated that the loss of trailer lighting could represent a noncompliance with Federal Motor Vehicle Safety Standard 108, which governs lamps and reflective devices.
Ford reopened its investigation on January 20, 2026. At that time, the company had identified 57 warranty claims potentially related to the condition. By February 4, that number had grown to 405 warranty claims and two Vehicle Owner Questionnaires. Ford’s Field Review Committee approved a recall on February 13.
The Fix: Over-the-Air Updates and Dealer Service
In a sign of how automotive technology has evolved, Ford plans to remedy the problem with a simple software update—no physical parts replacement required.
The company will begin rolling out an over-the-air (OTA) update in May 2026, which will automatically update the Integrated Trailer Module software in affected vehicles. Owners who prefer not to wait or who want professional installation can also take their vehicles to any Ford or Lincoln dealer, where the update will be performed free of charge.
“Owners will have the option to take their vehicle to a Ford or Lincoln dealer to complete the software update,” the recall notice states. “There will be no charge for this service”.
Notification Schedule
Ford will begin notifying dealers on March 17, 2026, with owner notification letters expected to be mailed between March 17 and March 27. Vehicle owners can also check whether their specific vehicle is affected by searching NHTSA’s recall database starting March 17.
For customer inquiries, Ford has established a dedicated line at 1-866-436-7332. The company’s internal recall number is 26C10.
Quality Concerns Persist
The recall represents a significant setback for Ford’s ongoing push to improve vehicle quality. The automaker was the most recalled company in America in 2025, and this latest action, one of the largest of the year so far, will do little to burnish its reputation for reliability.
The scale of the recall also has implications beyond individual vehicle owners. For commercial fleets, insurers, and anyone who tows boats, RVs, or work trailers, the defect raises immediate questions around risk management and liability as the spring towing season approaches.
Ford’s stock was little changed in early trading following the announcement, suggesting investors had already priced in the recall or viewed the software-based fix as manageable.
A Broader Industry Context
The recall comes just weeks after Stellantis, the parent company of Chrysler, Dodge, Jeep, and Ram, issued a “Do Not Drive” warning for approximately 225,000 older U.S. vehicles equipped with faulty Takata airbags. That alert covered vehicles from model years 2003 through 2016 and cited a risk of airbag explosions that could cause serious injury or death.
While the Takata recalls involve physical components that degrade over time, Ford’s issue is purely software-based—and therefore potentially easier to fix. The company’s ability to deliver the remedy over the air, without requiring millions of owners to visit dealerships, represents a significant advantage of modern vehicle architecture.
For now, Ford is urging affected owners to pay attention to their instrument panel warnings and to ensure their trailer lighting systems are functioning properly before each trip. The company says it will communicate directly with all known affected owners beginning next month.
