Ford has recalled nearly 149,000 Mustangs after determining that a wiring defect in the engine compartment can, in the worst case, cut power to the wheels or knock out the headlights while the car is being driven. The company says a fix is coming, but for some owners it may not arrive for well over a year.
What the Recall Covers
The recall spans 148,663 vehicles in the United States, covering Mustangs from the 2024 through 2026 model years built at Ford’s Flat Rock Assembly Plant in Michigan between September 7, 2022, and June 9, 2026. Filed with federal safety regulators as campaign 26V547, the recall centers on a specific wiring defect that Ford says can develop over time rather than one that affects every car the moment it leaves the factory. The Flat Rock plant, sometimes called the Michigan Assembly Plant, has built the current generation of the Mustang since it launched, meaning the recall touches essentially the full run of the model built there across nearly four model years rather than a narrow slice of production.
How the Wiring Fault Develops
The defect involves ground terminals in the engine compartment wiring harness, the connections that route electrical current back to the vehicle’s chassis, according to Ford’s recall filing. Adhesive from heat-shrink material used on the harness can intrude into the bolt-clearance area around a ground eyelet, an interference that can bend the eyelet slightly during assembly. Over time and with vibration and heat cycling from normal driving, Ford says these ground terminals can fatigue and eventually fracture, breaking the electrical connection they are meant to maintain.
What Fails When the Ground Connection Breaks
When a ground terminal fractures, the consequences depend on which circuit it was serving. Ford’s filing says the fault can cause a loss of drive power, meaning the engine can lose the ability to keep the car moving under its own power, and can separately disable the headlights, the windshield washer system, the air conditioning, and the engine cooling fan. An engine that cuts out while a car is moving raises the obvious risk of a crash from a driver suddenly losing control of speed in traffic, while a headlight failure reduces how well a driver can see the road and how visible the car is to everyone else on it, particularly at night or in poor weather. A failed cooling fan or washer system compounds the risk further by degrading a driver’s ability to see clearly or keep the engine from overheating during the drive. Because the ground terminals sit upstream of several unrelated systems at once, a single fractured connection can knock out more than one of these functions simultaneously rather than causing one isolated warning light, which is part of why Ford classified the defect as a safety recall rather than a routine service bulletin.
What Ford Knows So Far
As of August 18, 2026, Ford said it was aware of eight warranty claims tied to the defect, four of which had come in within three months of the vehicle being placed in service, an early indicator the company used in deciding to issue the recall. The company has reported no accidents, injuries, or formal vehicle owner questionnaires connected to the defect so far. Ford has not issued a do-not-drive advisory or told owners to park the vehicles outside as a precaution, a step automakers sometimes take with more acute safety defects, which suggests the company views the failure as serious but not urgent enough to keep owners from driving in the meantime.
The Remedy, and Why Some Owners Will Wait
The permanent fix involves a dealer replacing the engine compartment wiring harness ground terminals at no cost to the owner. Ford has told regulators that the remedy is still being finalized for some configurations, and as a result, some owners may not have access to the permanent repair until the first quarter of 2027, more than a year after vehicles as early as the 2024 model year were built. Owners covered by the recall should expect to receive formal notification by mail once Ford confirms the remedy schedule for their specific vehicle, and in the meantime dealers may have interim guidance for owners who want their vehicle inspected sooner rather than waiting for the scheduled repair window. Recall notification letters typically arrive weeks after a campaign is first filed with regulators, since automakers need time to match vehicle identification numbers against production and ownership records before mailings go out, so owners of eligible Mustangs built during the affected window should not assume a lack of a letter yet means their car is unaffected.
How This Recall Fits Ford’s Recent Pattern
A wiring-related recall of this size is not an isolated event for Ford, which has issued a steady stream of recalls across its lineup in recent years tied to everything from software glitches to mechanical defects discovered after vehicles were already on the road. What sets this one apart is the breadth of systems a single point of failure can take down at once, power delivery, lighting, cooling, and visibility, all traced back to one type of wiring connection rather than several unrelated defects. Owners who want to confirm whether a specific vehicle identification number is included can check with a Ford or Lincoln dealer or through the National Highway Traffic Safety Administration’s recall lookup tool using campaign number 26V547.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
More from Morning Overview
