# Service bulletins for the 2022 Harley\-Davidson Nightster

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.

4 bulletins from NHTSA, as of 2026-10-19.

- [M1555](/bulletins/11008736.md), 2024-10-08, Warranty extension: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. SERVICE BULLETIN M1555 \(REV E\): BATTERY WARRANTY GUIDELINES. PURPOSE: Revision E. Added: Added procedures for the DCA\-8000 E Battery Tester.\* Updated: All sections. This bulletin informs the dealership network that Harley\-Davidson has provided guidelines for battery warranty.
- [M1490](/bulletins/11007544.md), 2024-09-09, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. SERVICE BULLETIN M1490 \(V 24.8.8\): DIGITAL TECHNICIAN II \- UPDATES AND RELEASE NOTES. PURPOSE: This bulletin informs dealers that Harley\-Davidson has made a software update to Digital Technician II \(DT II\). DIGITAL TECHNICIAN II \(PART NUMBER: HD\-48650\). Version 24.8.8. Release Date: Week of August 5, 2024. New Features for Harley\-Davidson vehicles: Advanced Module Replace for 2021 and later Revolution Max; 2023 and later CVO Touring; and 2024 Street Glide \(FLHX\), Road Glide \(FLTRX\). New Features for LiveWire vehicles: Updated calibrations for 2024 S2DM EV1/ EV6; 2024 S2MH EV1; and 2024 S2DM, S2MH. Changes: Added Hand Control Module \(HCM\) \(Part No. 71500522A and 71500536A\) for reflash support.
- [M1490](/bulletins/11001293.md), 2024-06-07, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. SERVICE BULLETIN M1490 \(V 24.6.4\): DIGITAL TECHNICIAN II \- UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley\-Davidson has made a software update to Digital Technician II \(DT II\). DIGITAL TECHNICIAN II \(PART NUMBER: HD\-48650\). Version 24.6.4. Release Date: Week of May 1, 2024. New Features for LiveWire S2DM and S2MH, 2024 Revolution® Max, and 2024 Touring.
- [M1490](/bulletins/10219039.md), 2022-09-01, Service bulletin: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; ELECTRONIC STABILITY CONTROL \(ESC\):CONTROL MODULE:SOFTWARE; EQUIPMENT; UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. M1490: DIGITAL TECHNICIAN II \- UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley\-Davidson has made a software update to Digital Technician II \(DT II\). DIGITAL TECHNICIAN II \(PART NUMBER: HD\-48650\).• Version 22.7 \(Update\) Release Date: Week of August 29th, 2022; New Features: 2022 RH975 Hand Control Module \(HCM\), Changes: Guided Diagnostics – Correct part number for Trike Anti\-lock Braking System \(ABS\) Breakout Box \(BOB\).• Version 22.7 Release Date: Week of August 15th, 2022: New Features: 2021 and 2022 Touring and Trike, Parts and Accessories \(P\&A\) Legal Electronic Control Module \(ECM\) calibrations. Changes: Correction for Touring, where reflash selections may have been missing. • Version 22.6 Release Date: Week of August 01, 2022; New Features: 2021 \- 2022 Revolution® Max \& 2022 Touring Updated ECM calibrations. 2020 and Later Touring, Trike, Softail and Sportster: Updated Body Control Module \(BCM\). Changes: Vehicle Setup, Tire Pressure Monitoring System \(TPMS\) Setup Screen. • Version 22.5.3 Release Date: Week of July 18th, 2022; Changes: Revolution® Max calibrations updated.

JSON: [/v1/vehicles/2022_harley-davidson_nightster/bulletins](/v1/vehicles/2022_harley-davidson_nightster/bulletins)

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