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Service bulletin M1504

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 id10169955
Published by NHTSA2020-01-08
Manufacturer's numberM1504
Manufacturer's date2019-12-20
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

SERVICE BULLETIN M1504: LIVEWIRE MODULES UPDATES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to the LiveWireâ„¢ on both of the following modules: OBC (On-Board Charger) and RESS (Rechargeable Energy Storage System). This software update is required for all LiveWire vehicles manufactured before January 10, 2020 and will be reimbursed under warranty. Perform this update as soon as possible on any affected units in the dealers inventory, and on all units sold and delivered to customers. Contact the dealers LiveWire customers and arrange to perform this update. NOTE: If the RESS software is not updated, the RESS may be permanently disabled during AC (Alternating Current) charging if left plugged in for durations longer than 12 h.

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/LIVEWIRE ELW (LIVEWIRE)2020

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