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Service bulletin M1490

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 id11018137
Published by NHTSA2025-05-08
Manufacturer's numberM1490
Manufacturer's date2025-04-16
NHTSA componentUNKNOWN OR OTHER; ELECTRICAL SYSTEM

NHTSA's summary

SERVICE BULLETIN M1490 (V 25.3.4): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Revision: Changes support for MY2025-2024. Version 25.3.4, Release Date: Week of April 7, 2025.

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

Vehicles listed
HARLEY-DAVIDSON AMERICANA

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