Engine coolant temperature gauge reading at the high end of the normal range while towing in high ambient...

Bulletin number

TSB 23-2426

Component

Engine and engine cooling

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.

Owners of these vehicles have filed 15 complaints in the engine category.