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Service bulletin M1599

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 id10240479
Published by NHTSA2023-08-05
Manufacturer's numberM1599
Manufacturer's date2023-07-27
NHTSA componentEQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT

NHTSA's summary

SERVICE BULLETIN M1599: 50S/30K HEADSET UPDATE FOR INFOTAINMENT. PURPOSE: This bulletin informs dealers that there is a software update available for the 50S and the 30K headsets. This update is to improve the interaction of the headsets with the Infotainment Control Unit (IFCU) on the 2023 FLHXSE and FLTRXSE.

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.

Components

Equipment and accessories

Vehicles listed
HARLEY-DAVIDSON FLHXSE2023
HARLEY-DAVIDSON FLTRXSE2023

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