# Service bulletin M1577

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: 10231505
- Published by NHTSA: 2023\-02\-08
- Manufacturer's number: M1577
- Manufacturer's date: 2023\-01\-13
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

SERVICE BULLETIN M1577: RH975 NIGHTSTER BATTERY DRAIN. PURPOSE: This bulletin informs dealers who are experiencing a battery drain issue on 2022 Nightster vehicles of a repair process. An issue has been identified where the Left Hand Control Module \(LHCM\) \(Part No. 71500552\) and Right Hand Control Module \(RHCM\) \(Part No. 71500543\) may keep the Controller Area Network \(CAN\) Bus awake after turning off the vehicle. This issue is more likely to occur in elevated temperatures.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231505-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231505-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2022 HARLEY\-DAVIDSON RH975

JSON: [/v1/bulletins/10231505](/v1/bulletins/10231505)

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