Ford Is Recalling 86,543 Mach-Es Because a Faster Jig Didn't Let the Glue Cure

The part failing here is a strip of trim around the rear side quarter window — the small fixed pane behind the rear door. It is not structural, it is not part of the battery, and nobody has been hurt by one. It is also, on 86,543 Mustang Mach-Es, capable of letting go at speed and landing in the lane behind you.

Ford filed the recall with the National Highway Traffic Safety Administration on July 28. The campaign number is 26V487000; Ford's internal number is 26S56. It covers 2023 through 2025 model year Mustang Mach-Es, which is to say the car that is currently Ford's only battery-electric passenger vehicle in the US. NHTSA's summary of the defect is one sentence long: the rear side quarter window glass trim may be improperly secured, which can allow it to detach. The consequence is the obvious one — a detached piece of trim on a road is a hazard for whoever is behind it.

The interesting part is the chronology in Ford's Part 573 report, because it reads like a small case study in how a process improvement becomes a recall.

The glass assemblies were made by Saint-Gobain in Mexico. In February 2023, the supplier introduced a new assembly jig that cut the time needed to fit the trim piece to the quarter glass. Faster fixture, shorter cycle, more parts per shift. What the shorter cycle also did was give the primer under the trim less time to cure before the piece was pressed home, and a primer that has not cured produces what the report calls an insufficient bond.

Ford noticed a spike in warranty claims for loose or detached trim in May 2024. In September 2024 the supplier added a 30-second timer to the jig — in effect, forcing the line to wait for the chemistry. Production of affected parts ends on October 8, 2024, which brackets the recall population: cars built February 17, 2023 through October 8, 2024. Ford has counted 219 warranty reports of the trim coming loose or coming off, and says it is aware of no crashes and no injuries.

The remedy is an inspection, with replacement of the quarter window glass assemblies where needed, free of charge. The timing is worth writing down if you own one. Interim letters — the kind that tell you there is a problem but not yet how it gets fixed — are due to be mailed September 10, 2026, with a second round once the remedy parts are in place. VINs become searchable on NHTSA's site starting September 7. Ford's customer service line for the campaign is 1-866-436-7332.

For scale: 86,543 vehicles is a large number for a trim recall and a large share of a single nameplate's output, but it is the kind of defect that gets fixed in a service bay in an afternoon rather than the kind that keeps a car parked. Nothing in the filing asks owners to stop driving or to park outside — NHTSA's record has both the park-it and park-outside flags set to false.

It also lands in a year that has been busy at Ford's recall desk. This is the second Mustang-badged campaign we have covered in as many months, after the wiper motor recall earlier in the summer, and the broader tally at NHTSA has already passed 300 recalls across the industry for 2026. Most of them are exactly this shape: a supplier change that looked like an efficiency, a warranty curve that started bending the wrong way about a year later, and a letter in the mail two years after that.