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Service bulletin M1625

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 id10249807
Published by NHTSA2024-02-06
Manufacturer's numberM1625
Manufacturer's date2024-01-26
NHTSA componentEQUIPMENT; ELECTRICAL SYSTEM

NHTSA's summary

SERVICE BULLETIN M1625 (REV B): SKYLINE OS AND AMPLIFIER SOFTWARE UPDATE FOR 2024. PURPOSE: This bulletin informs dealers that there is a Skyline™ OS update and Amplifier update available for the 2024 Touring bikes equipped with an Infotainment Control Unit (IFCU). The vehicle's IFCU leaving the Harley-Davidson manufacturing facility will have Skyline™ OS (Software version 240002100D) installed and will need to be updated to Skyline™ OS (Software version 240002111D). Amplifiers will have (Software version 1.3.3.0) installed and also need to be updated to (Software version 1.3.8.0). These updates combine to contain bug fixes to Embedded Navigation, Apple CarPlay® and the Audio System.

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

Electrical system, Equipment and accessories

Vehicles listed
HARLEY-DAVIDSON FLHX2024
HARLEY-DAVIDSON FLHXSE2024
HARLEY-DAVIDSON FLTRX2024
HARLEY-DAVIDSON FLTRXSE2024
HARLEY-DAVIDSON FLTRXSTSE2024

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