WenmarOpen by Wenmar Pro

Service bulletin TSB 25-2022

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)
TypeService bulletin
NHTSA id11014142
Published by NHTSA2025-02-11
Manufacturer's numberTSB 25-2022
Manufacturer's date2025-02-08
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

Some of the vehicles listed in the Model statement above may exhibit an engine coolant temperature gauge falsely reading at the high end of the normal range while towing in high ambient temperatures with no DTC stored in the PCM or warning messages present in the IPC. This may be due to the software in the IPC.

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 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2023 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2023 (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.