RH975 nightster battery drain
Harley-Davidson technical service bulletin M1577 for 2022 Harley-Davidson RH975.
- Bulletin number
- M1577
- Component
- Equipment
- 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.
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