Ford F-250 SD 2023 — technical service bulletin
Bulletin TSB 23-2426 · NHTSA communication 10248367 · issued Dec 20, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2023
model years
7
vehicle entries
Official summary
Some 2023 F-Super Duty chassis cab vehicles equipped with a 6.7L engine may exhibit an engine coolant temperature gauge reading at the high end of the normal range while towing in high ambient temperatures with no diagnostic trouble codes (DTC) stored in the powertrain control module (PCM) or warning messages present in the instrument panel cluster (IPC). This may be due to the software in the IPC.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.