# Service bulletin M1663

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: 11010218
- Published by NHTSA: 2024\-11\-07
- Manufacturer's number: M1663
- Manufacturer's date: 2024\-10\-26
- NHTSA component: UNKNOWN OR OTHER; ELECTRICAL SYSTEM

## NHTSA's summary

SERVICE BULLETIN M1663: REVOLUTION MAX INSTRUMENT MODULE SOFTWARE UPDATE. PURPOSE: This bulletin informs the dealers that there is a new Instrument Module \(IM\) software \(LM7\_51456370\_20240322\) and \(LM4\_51456370\_20240325\). Refer to: Infotainment Support Resources page on Service Information Portal \(SIP\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11010218-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11010218-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2021 to 2024 HARLEY\-DAVIDSON RA1250
- 2021 to 2024 HARLEY\-DAVIDSON RA1250S
- 2024 HARLEY\-DAVIDSON RA1250SE
- 2021 to 2024 HARLEY\-DAVIDSON RH1250S
- 2022 to 2024 HARLEY\-DAVIDSON RH975
- 2023 to 2024 HARLEY\-DAVIDSON RH975S
- 2021 HARLEY\-DAVIDSON duplicate productRA1250

JSON: [/v1/bulletins/11010218](/v1/bulletins/11010218)

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