# Service bulletin M1590

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: 10248396
- Published by NHTSA: 2024\-01\-06
- Manufacturer's number: M1590
- Manufacturer's date: 2023\-12\-14
- NHTSA component: VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL

## NHTSA's summary

SERVICE BULLETIN M1590: REVOLUTION MAX CRUISE CONTROL SWITCH REPLACEMENT. Purpose: Revision. This bulletin informs dealers that Harley\-Davidson has a new part available to allow replacement of the Cruise Control Switch on Revolution® Max powered vehicles. Replacing the entire Left Hand Control Module \(LHCM\) is no longer required due to a broken cruise control switch. Revision: Updated Required Dealer Action, Add graphic.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10248396-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10248396-9999.pdf)

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

## Components

Electrical system, Throttle and cruise control

## Vehicles listed

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

JSON: [/v1/bulletins/10248396](/v1/bulletins/10248396)

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