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Over-the-air update 25-ECM-25.10.21 F-SD

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11019039
Published by NHTSA2025-06-04
Manufacturer's number25-ECM-25.10.21 F-SD
Manufacturer's date2025-05-09
Campaign id or software version25-OTA ECM-25.10.21 SuperDuty(F-250,F-350,F-450,F-550)
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

"Quality improvements include: -Heat Ventilating and Air Conditioning calibration to ensure more consistent airflow through the vents"

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Vehicles listed
FORD F-250 SD2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2024, 2025 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.