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Service bulletin M1673

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 id11018149
Published by NHTSA2025-05-08
Manufacturer's numberM1673
Manufacturer's date2025-04-26
NHTSA componentUNKNOWN OR OTHER; ELECTRICAL SYSTEM

NHTSA's summary

SERVICE BULLETIN M1673 (REV B): DIGITAL TECHNICIAN® II WINDOWS 7 HARDWARE TERMINATION NOTICE. PURPOSE: Harley-Davidson is requiring all dealers to replace all Digital Technician II (DT II) Panasonic Windows 7 models before May 15th, 2025. After that date, all Windows 7 units will cease to function. Previous communications have outlined the issues requiring laptop replacement such as Windows 7 no longer being supported, compatibility issues with Techlink 3, and aging hardware. Note: Attempting to upgrade your Windows 7 unit to Windows 10 or 11 is not recommended due to reliability concerns. Harley-Davidson does not have loaner units to provide if your Windows 7 laptop ceases to function. Previous communications were sent through H-Dnet.com in December 2019, April 2021, and March 2022. As part of this communication, Harley-Davidson is announcing several options: The Microsoft Surface Pro 10 for Business tablets with a protective case is approved to be used with DT II. The Microsoft Surface Pro 11 for Business with Intel Core and a protective case is approved to be used with DT II. The Microsoft Surface Pro 11 for business with Snapdragon core is NOT compatible with DT II. Note: the tablets are still supplementary and not an equivalent or a replacement for the laptop. REV B. 2025-04-25. Updated communications. Updated: Purpose for Service Bulletin and ORDERING PROCESS FOR MICROSOFT SURFACE PRO 10. REV A. 2025-04-17. Updated communications. * Updated: Purpose for Service Bulletin.

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.