# Service bulletin M1579

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.

- Type: Service bulletin
- NHTSA id: 10232450
- Published by NHTSA: 2023\-03\-04
- Manufacturer's number: M1579
- Manufacturer's date: 2023\-02\-14
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

SERVICE BULLETIN M1579 \(REV B\): REVOLUTION MAX BCM AND ECM UPDATE. PURPOSE: REVISION. This bulletin informs dealers that a BCM and Electronic Control Module \(ECM\) update is available on Digital Technician II \(DT II\). Revision: Updated Body Control Module \(BCM\) part numbers. Updated Part Numbers Affected.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232450-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232450-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2021 to 2023 HARLEY\-DAVIDSON RA1250
- 2021 to 2023 HARLEY\-DAVIDSON RA1250S
- 2021 to 2023 HARLEY\-DAVIDSON RH1250S
- 2022 to 2023 HARLEY\-DAVIDSON RH975
- 2023 HARLEY\-DAVIDSON RH975S

JSON: [/v1/bulletins/10232450](/v1/bulletins/10232450)

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