Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
M1732
SERVICE BULLETIN M1732 (REV B): HIGH FREQUENCY BELT SOUND ON 2026 TRIKE (FLTRT, FLHLT, FLHLTSE). PURPOSE: Revision. This bulletin provides a belt dressing procedure to reduce a high frequency sound originating in the belt tensioner pulley area. Revision B: Updated: Purpose for Service Bulletin and Required Dealer Action. Verbiage updated and add Note.
M1490
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).
M1730
SERVICE BULLETIN M1730: INCORRECT DERBY COVER ON LIBERTY EDITION ROAD GLIDE (FLTRX) AND STREET GLIDE 3 LIMITED (FLHLT). PURPOSE: Initial Release. This bulletin informs dealers that select Liberty Edition Road Glide (FLTRX) and Street Glide 3 Limited (FLHLT) motorcycles built between May 21, 2026 and June 10, 2026 will be shipped with an Incorrect Derby Cover (Part No. 25701561) installed. See Figure 1. This is the result of a temporary part shortage impacting the correct Liberty Edition component. Dealers will be required to replace the incorrect Derby Cover (Part No. 25701561) and associated components with the correct Derby Cover (Part No. 25702025) and associated components once they arrive at the dealership. Harley-Davidson will be sending the replacement parts directly to dealers with impacted units starting mid-June.
M1715
SERVICE BULLETIN M1715 (REV C): SKYLINE OS VERSION 5057D SOFTWARE UPDATE. PURPOSE: Revision. NOTE: Service Bulletin M1715 supersedes M1666. Repairs made to vehicles after April 8, 2026 following M1666 will not be accepted through warranty. Warranty claims on repairs made prior to April 8, 2026 will be accepted following standard claim submission policy and process. This bulletin informs dealers of a Skyline™ OS software update, version (260005057D), for 2023-2026 Touring and 2026 Trike vehicles equipped with an Infotainment Control Unit (IFCU). This software update will be available both as Over The Air (OTA) and Universal Serial Bus (USB). Revision C. Updated: Required Dealer Action. Updated: Pre-delivery Update Note Added.
M1728
SERVICE BULLETIN M1728: 2026 STREET GLIDE 3 LIMITED (FLHLT) LIBERTY EDITION ENTHUSIAST COLLECTION SEAT APPEARANCE. PURPOSE: Initial release. This bulletin informs dealers that there is a replacement Seat (Part No. 52000913) and Passenger Backrest (Part No. 52300750) available to replace the Liberty Edition Enthusiast seats exhibiting loose fabric and other warrantable concerns.
PAB1182
GENUINE MOTOR PARTS AND ACCESSORIES BULLETIN PAB1182: TRIKE SADDLEBAGS KIT INFORMATIONAL UPDATE. PURPOSE: Initial release. This bulletin informs dealers that the Trike Saddlebags kit (Part No. 84031-11) has an informational update: The drill template that is inside the kit, is only used for 2009-2025 Trike models. The electronic version of this instruction sheet which is located in Service Information Portal (SIP), will have the drill template as an attachment for 2026 and later Trike models (see service bulletin M1714). It will not be included inside the kit or directly attached to the instruction sheet.
M1722
SERVICE BULLETIN M1722 (REV A): EXHAUST SMOKE, OIL CARRY-OVER OR MILKY OIL (M8 MODELS WITH TRANSMISSION-MOUNTED BREATHER). PURPOSE: Revision A. Purpose for Service Bulletin. This bulletin informs dealers about: • The cause and effects of moisture in engine oil. • Service Manual troubleshooting updates for Milwaukee-Eight engines with the transmission-mounted breather, that have symptoms of moisture in oil and the best practices to avoid creating such instances. • New Job Time Code (JTC 3017 Diagnose Oil Carryover/Moisture) for service manual troubleshooting.
M1679
SERVICE BULLETIN M1679: AFTERMARKET EXHAUST HEADER DEBRIS. PURPOSE: Initial release. This bulletin informs dealers that Harley-Davidson has identified instances of premature engine failure due to abrasive particle wear, specifically from debris inside new aftermarket exhaust headers. Recent evaluations have identified that certain newly manufactured exhaust headers may contain residual hard particles that, if not removed prior to installation, can migrate through the engine system and cause accelerated component wear or severe mechanical damage.
M1713
SERVICE BULLETIN M1713 (REV C): DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.4.3). PURPOSE: Revision C. This bulletin informs dealers that an issue was discovered in the Digital Technician II (DT II) software version (26.0.2), released on November 18, 2025. The issue prevents automatic software updates to be installed on your DT II computer. A manual installation of the latest DT II software version (26.4.3) will need to be performed if current DT II software version is (26.0.2), to allow future automatic updates. If a manual update to (26.1.5) or (26.3.2) has previously been completed, DT II will automatically update to (26.4.3) and no additional action is needed.. Revision C. Updated: Purpose for Service Bulletin and Required Dealer Action. Updated to Software Version (26.4.3).
PAB1174
SERVICE BULLETIN PAB1174 (REV A): SCREAMIN EAGLE STAGE KITS (I-IV) FITMENT HOLD. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has lifted the hold for the Screamin' Eagle Pro Street Tuner and software for certain 2026 vehicles. Updated: Purpose for Parts and Accessories Bulletin and Summary. Updated: Purpose for Parts and Accessories Bulletin and Summary, Update software availability.
PAB1177
SERVICE BULLETIN PAB1177: HARLEY-DAVIDSON AUDIO POWERED BY ROCKFORD FOSGATE P&A WIRING SCHEMATICS. PURPOSE: Initial Release. This bulletin informs dealers and technicians that there are Parts and Accessories (P&A) Wiring Schematics for Harley-Davidson Audio Powered by Rockford Fosgate components. Schematics are available for both Non Center-Cooled and Center-Cooled models.
M1716
SERVICE BULLETIN M1716: 2026 TRIKE ESSENTIAL TOOLS LIST. PURPOSE: Initial Release. This bulletin informs dealers of new essential tools necessary to perform all procedures on 2026 and later Trike models. New tools will be delivered in the 1st quarter of 2026. In an effort to keep essential tool costs low, Harley-Davidson actively tries to re-use existing tools that should already be in dealer inventory from past models. HD-49303 is an active tool that dealers should have for use on 2009-2025 trike models. 2026 and later Trikes use HD-49303 in conjunction with a new tool HD-53462. Check your essential tools inventory and order HD-49303 if it is missing. See Figure 1.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.