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Service bulletin L1024_Customer Letter

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11028614
Published by NHTSA2026-02-06
Manufacturer's numberL1024_Customer Letter
Manufacturer's date2026-01-28
NHTSA componentEXTERIOR LIGHTING; UNKNOWN OR OTHER; ELECTRICAL SYSTEM

NHTSA's summary

SERVICE BULLETIN L1024: LIVEWIRE ONE (LW1) INSTRUMENT MODULE REPLACEMENT (CUSTOMER LETTER). Intial Release. This bulletin informs vehicle owners that the Original Equipment (OE) Instrument Module (Part No. 70901100) has been discontinued and is no longer available to order as a replacement component for the 2021-2023 LiveWire ONE (LW1). If the Instrument Module (IM) needs to be replaced, one of the following replacement kits will be available: • Part No. 76001482 (EV 1-DOM) • Part No. 76001483 (EV 3-HDI). This kit will replace the original instrument with a 4-inch round instrument along with the supporting parts. Due to the differences in the instrument modules, appearance and functional content in this bulletin MUST be given to the vehicle owner. The attached items in this bulletin are: • Owner's Manual (OM) content to explain the operation of the new instrument module • Electrical Diagnostic Manual (EDM) content with an updated wire schematic and diagnostic procedure • Service Manual content to remove and install the round instrument module.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Lighting

Vehicles listed
LIVEWIRE LIVEWIRE ONE2021, 2022, 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
M14902026-08-06. Service bulletin. SERVICE BULLETIN M1490 (V 26.8.3): 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 Version 26.8.3, Release Date: Week of July 24, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features - Harley-Davidson: 2023-2024 Touring: Updated Electronic Control Module (ECM) calibration offerings. LiveWire: S2DM/MH/AP: Calibration bundle 10.2.28: Telematic Control Unit (TCU) reflash updates. Change: Vehicle Setup: Body Control Module (BCM) – Tire Pressure Monitoring System (TPMS) Replacement: Correct issue where tire size selections were not available. System Info – Auxiliary Load Controller (ALC): Added Bike configuration field. Data Items – Trike ECM: Improved display of Gear Position when in reverse. Amp – Added support for (Part No. 76001619).
M14902026-07-07. Service bulletin. SERVICE BULLETIN M1490 (V 26.7.3): 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 26.7.3. Release Date:• Week of June 11, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions.
M14902026-05-08. Service bulletin. SERVICE BULLETIN M1490 (V 26.6.2): 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 26.6.2. Release Date: Week of April 22, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features: 2026 Police • Vehicle Setup: Civilianize; LiveWire • S2: Del Mar (S2DM), Mulholland (S2MH), Alpinista (S2AP) - Calibration bundle 10.2.20: Vehicle Supervisory Controller (VSC) and Onboard Charger (OBC) reflash updates. Changes: 2026 Trike • Update “Reverse Lockout Reason” resize column.
M14902026-04-08. Service bulletin. SERVICE BULLETIN M1490 (V 26.5.2): 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 26.5.2 Release Date: Week of March 30, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features. 2024: Pan America (RA1250), Pan America Special (RA1250S), CVO Pan America (RA1250SE) • Updated Body Control Module (BCM) reflash calibration. 2024-2026: CVO Road Glide ST (FLTRXSTSE) • Updated Electronic Control Module (ECM) reflash calibration. 2026: CVO Street Glide ST (FLHXSTSE) • Updated ECM reflash calibration. Changes. 2026 Trike • Update “Reverse Lockout Reason” to support new values, • “Vehicle setup: Gear Indicator Calibration” – improve operation. 2025-2026 Softail • Update reflash for Softail Speedometer (SPDO) – enable operation of auxiliary lamp telltale. LiveWire S2 • Provide reflash support for Vehicle Supervisory Controller (VSC) hardware (Part No. 41001756RE).
L10242026-02-06. Service bulletin. SERVICE BULLETIN L1024: LIVEWIRE ONE (LW1) INSTRUMENT MODULE REPLACEMENT. Initial Release. This bulletin informs dealers that the Original Equipment (OE) Instrument Module (Part No. 70901100) has been discontinued and is no longer available to order as a replacement componentfor the 2021-2023 LiveWire ONE (LW1). See Figure 1. If the Instrument Module (IM) needs to be replaced, use one of the following replacement kits: • Part No. 76001482 (EV 1-DOM) • Part No. 76001483 (EV 3-HDI). This kit will replace the original instrument with a 4-inch round instrument along with the supporting parts. Instruction sheet 94100595 outlines the process of installing the kit. Due to the differences in the instrument modules, appearance and functional content in this bulletin MUST be given to the vehicle owner. The attached items in this bulletin are: • Owner's Manual (OM) content to explain the operation of the new instrument module • Electrical Diagnostic Manual (EDM) content with an updated wire schematic and diagnostic procedure • Service Manual content to remove and install the round instrument module.
M15552025-03-08. Service bulletin. SERVICE BULLETIN M1555 (REV G): BATTERY WARRANTY GUIDELINES. PURPOSE: [Revision G: Updated: Information on Battery. Update section headers: AGM and Lithium-Ion Batteries.] This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
M15552024-11-07. Warranty extension. SERVICE BULLETIN M1555 (REV F): BATTERY WARRANTY GUIDELINES. PURPOSE: [Revision F. Added: Added video link for the DCA-8000 Battery Tester. Added: Supplemental Procedure Video.] This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
M14902024-09-09. Service bulletin. 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.
L10052023-09-08. Service bulletin. SERVICE BULLETIN L1005: BLUETOOTH PAIRING INSTRUCTIONS AND TIPS. PURPOSE: To provide both Harley-Davidson and LiveWire dealers a single document that includes greater detail about Bluetooth pairing a phone to the instrument module.
L10022023-04-05. Service bulletin. SERVICE BULLETIN L1002: 2021-2022 LIVEWIRE ONE ONBOARD CHARGER (OBC) SOFTWARE UPDATE. PURPOSE: A software update is available for the 2021-2022 LiveWire One Onboard Charger (OBC). The low temperature threshold for Direct Current (DC) to DC (12 V battery maintenance) has been revised from 32 °F (0.0 °C) to 5 °F (-15.0 °C). This change reduces the possibility of a 12 V battery discharge in cold weather storage. Additionally, enhancements have been made to reduce compatibility concerns at public level 3 charging stations. This allows a user to use level 3 chargers which may have previously displayed errors when connected to a LiveWire One.