2016 Harley-Davidson Flhtcu Technical Service Bulletins

56 technical service bulletins (TSBs) are on record for the 2016 Harley-Davidson Flhtcu. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11037861Sep 17, 2026Engine, Fuel system, Other or unknown, Electrical system, Transmission and…. SERVICE BULLETIN M1490 (V 26.9.4): 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). New Software Update. NOTE: The TECHLINK 3 (PART NUMBER: HD-48650-TL3) supports Controller Area Network (CAN) and J-1850 protocol vehicles.
• 11035941Jul 25, 2026Wheels, Transmission and drivetrain, Electrical system, Vehicle speed control…. 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…
• 11034748Jun 11, 2026Electrical system, Exterior lighting, Engine, Fuel system. 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…
• 11032492Apr 25, 2026Engine, Other or unknown, Transmission and drivetrain. SERVICE BULLETIN M1727: BIG TWIN INNER PRIMARY SEAL CHANGES. PURPOSE: Initial release. This bulletin informs dealers of changes to the Inner Primary Seal (Part No. 12052). The seal part number was changed from (Part No. 12052A, black in color) to (Part No. 12052B, brown in color). A new Inner Primary Seal (Part No. 12052C) has been released and the color has been changed back to black.
• 11032452Apr 24, 2026Engine, Fuel system, Transmission and drivetrain, Electrical system, Vehicle…. 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…
• 11031147Mar 31, 2026Engine, Electrical system, Vehicle speed control, Other or unknown, Fuel system. 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…
• 11031167Mar 14, 2026Other or unknown, Engine. 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.
• 11029728Feb 25, 2026Electrical system, Other or unknown. 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.
• 11029727Feb 25, 2026Other or unknown, Electrical system. SERVICE BULLETIN M1490 (V 26.4.3): 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 26.4.3 Release Date: Week of February 25, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software…
• 11028618Jan 28, 2026Fuel system, Transmission and drivetrain, Electrical system, Other or unknown…. SERVICE BULLETIN M1713 (REV B): DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.3.2). PURPOSE: Revision B. 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.
• 11028615Jan 28, 2026Fuel system, Electrical system, Vehicle speed control, Other or unknown, Engine. SERVICE BULLETIN M1490 (V 26.3.2): 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 26.3.2. Release Date: Week of January 28, 2026. NOTE Software version (26.3.2) will need to be manually installed only if current software version…
• 11027551Dec 18, 2025Electrical system. SERVICE BULLETIN M1713: DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.1.5). PURPOSE: Initial Release. 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 (26.1.5) will…
• 11027538Dec 18, 2025Wheels, Electrical system, Other or unknown. SERVICE BULLETIN M1490 (V 26.1.5): 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). New Software Update Version 26.1.5. Release Date: Week of December 15, 2025. NOTE: Software version (26.1.5) will need to be manually installed. Refer to…
• 11026163Nov 18, 2025Other or unknown, Electrical system. SERVICE BULLETIN M1490 (V 26.0.2): 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). New Software Update Version 26.0.2. Release Date: Week of November 18, 2025. New Features, Changes. 2026 Vehicles, 2025 Softail and LiveWire S2DM/MH/AP EV3.
• 11025167Oct 28, 2025Other or unknown, Electrical system. SERVICE BULLETIN M1391A (REVU): MIDTRONICS GRX-3110 AND DCA-8000 SOFTWARE. PURPORSE: Revision U. The purpose of this bulletin is to inform the dealer network that a software update to the GRX-3110 and DCA-8000 is now available. DYNAMIC DIAGNOSTIC CHARGER SYSTEM (PART NUMBER: DCA-8000). [Rev U] Added: Description of improvements made to the testing algorithm for GRX software Version P and DCA-8000 software Version E.
• 11025168Oct 25, 2025Other or unknown, Electrical system. GENUINE MOTOR PARTS AND ACCESSORIES BULLETIN PAB1171 (REV B): SOFTWARE UPDATE FOR SCREAMIN EAGLE PRO STREET TUNER. PURPOSE: Revision B. Updated: Summary. The App has returned to the Apple App Store. This bulletin informs dealers that a recent software update to the Screamin' Eagle Pro Street Tuner application will require the use of a Personal Computer (PC) to complete a Bluetooth Communication Interface (BCI)…
• 11023967Sep 6, 2025Electrical system, Other or unknown. SERVICE BULLETIN M1490 (V 25.8.9): 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). New Software Update Version 25.8.9 Release Date: Week of September 2, 2025. Changes: LiveWire 2024 S2MH: Removal of incorrect Electro Hydraulic Control…
• 11022968Aug 26, 2025Other or unknown, Electrical system. SERVICE BULLETIN M1490 (V 25.8.7): 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). New Software Update Version 25.6.4, Release Date: Week of August 19, 2025. Includes New Features and Changes for the Models & Model Years listed.
• 11022942Aug 26, 2025Electrical system, Other or unknown. SERVICE BULLETIN M1391A (REV T): MIDTRONICS GRX-3110 AND DCA-8000 SOFTWARE. PURPORSE: Revision T. The purpose of this bulletin is to inform the dealer network that a software update to the GRX-3110 and DCA-8000 is now available. DYNAMIC DIAGNOSTIC CHARGER SYSTEM (PART NUMBER: DCA-8000). [Rev T] Updated: New Software Update, Previous Software Updates and DCA-8000. Added: 192-210335P. Software update 192-210335P for…
• 11022969Aug 16, 2025Electrical system, Other or unknown. SERVICE BULLETIN M1684: MARKET SPECIFIC BATTERY INTRODUCTION. PURPOSE: Initial Release. This bulletin informs dealers of the availability of new batteries for new Original Equipment (OE) vehicle production and in the Parts and Accessories (P&A) catalog. Availability of the new Absorbed Glass Mat (AGM) batteries will vary by market and will be transitioning over the next few months. NOTE: The ring terminal screws…
• 11014014Jan 24, 2025Other or unknown, Vehicle speed control, Transmission and drivetrain, Fuel…. SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft Drive Gear Retention Kit and service proceduresfor the Milwaukee-Eight and Twin Cam applications. In an effort to increase the clamp load of the camshaft drive sprocket bolted joint and prevent the drive bolt from loosening in high lift…
• 11008736Sep 12, 2024Electrical system, Other or unknown. 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.
• 11007544Aug 8, 2024Other or unknown, Electrical system. 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…
• 11005514Jul 10, 2024Engine, Transmission and drivetrain, Other or unknown. GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1158: OIL FILTER PACKAGING AND CASE QUANTITY UPDATE. PURPOSE: To inform dealerships that Harley-Davidson has made updates to oil filters including new part numbers, packaging design, and bulk case quantity changes.
• 11001293May 1, 2024Electrical system, Other or unknown. 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.
• 10254115Apr 4, 2024Vehicle speed control, Transmission and drivetrain, Other or unknown, Engine…. SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin informs dealers that all: Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and Milwaukee-Eight gear packs on CVO, Police, Softail, Touring & Trike models ordered after December 04, 2023 will not come with the shift…
• 10248401Dec 21, 2023Exterior lighting. GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1146: 68193-95 BULB WEDGE, FENDER TIP LAMP. Purpose: To inform dealers of an issue with the bulb wire terminals not being to specification. The light bulbs were used in numerous front and rear fender tip light assemblies for domestic and international applications.
• 10248398Dec 4, 2023Vehicle speed control, Transmission and drivetrain, Other or unknown. SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: • Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and • Milwaukee-Eight gear packs on CVO, Police, Softail, Touring & Trike models ordered after December 04, 2023 will not come with the shift drum, forks, shafts and related hardware.
• 10248397Dec 4, 2023Vehicle speed control, Transmission and drivetrain. SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: • Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and • Milwaukee-Eight gear packs on CVO, Police, Softail, Touring & Trike models ordered after December 04, 2023 will not come with the shift drum, forks, shafts and related hardware.
• 10222358Sep 23, 2022Body and structure, Steering. TECHNICAL TIP BULLETIN TA0016: 2014 and Later Touring Steering Head Bearing Adjustment. PURPOSE: REVISION. Updated: 2014-2019 to 2014 and later Touring vehicles, and VEHICLES AFFECTED. Harley-Davidson motorcycles are designed, manufactured and tested to be operated with both of the rider’s hands on the handlebar. If you or a customer are experiencing a handling concern, refer to the TROUBLESHOOTING, HANDLING…
• 10178101Jul 7, 2020Electrical system, Equipment. SERVICE BULLETIN M1464: BOOM! AUDIO - GENERAL INFORMATION AND SOFTWARE UPDATE 1.22.X. PURPOSE: Revision. This bulletin helps the dealer locate needed information to update and service Boom! Box Audio Infotainment systems. It also lists software revisions and the fixes addressed in each revision. This bulletin also replaces the following documents: TT431A: Software Download and Warranty Information, M1346: Boom! Box…
• 10176926Jun 9, 2020Equipment, Suspension. TECHNICAL TIP BULLETIN TT413: 2009 - 2020 TOURING REAR FORK RUSTY WATER LEAKAGE. PURPOSE: Revision. Some 2009 - 2020 Touring, Touring CVO, Touring Police models exhibit drainage of rusty water from the rear fork (where the debris deflector mounts), which has raised customer concern. Updated Model Years. NOTE: This is a cosmetic concern and not an indication of an internal issue.
• 10176175May 15, 2020Equipment, Electrical system. GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1097 INTERNATIONAL FITMENT: THE BOOM! BOX GTS SOFTWARE UPDATE. PURPOSE: To notify International dealers that International GTS radios are now available to be ordered and installed in 2014-2018 Touring, CVO Touring and Trike models previously equipped with 6.5 GT radios as retrofittable with additional parts and software as noted. Markets Affected: Only…
• 10162967Jun 25, 2019Transmission and drivetrain. SERVICE BULLETIN M1492: 2017 - 2019 TOURING - MILWAUKEE EIGHT - INNER PRIMARY VENT. Purpose: Revision. Harley-Davidson has learned that a small percentage of dealers and customers are finding low transmission oil levels and high primary oil levels during normal maintenance intervals. This could indicate that oil is transferring from the transmission case to the primary housing through the transmission mainshaft. A…
• 10160929May 15, 2019Engine cooling. SERVICE BULLETIN M1476: 2014 - 2016 TWIN-COOLED COOLANT PUMP REPLACEMENT. Revision: Added Dealer inventory instructions. Purpose for Service Bulletin: To inform dealers of a new coolant pump replacement kit for 2014 - 2016 Twin Cooled vehicles. Markets Affected: All markets are affected.
• 10158168Mar 28, 2019Transmission and drivetrain, Engine. SERVICE BULLETIN M1450: MILWAUKEE-EIGHT EQUIPPED VEHICLES - LOSS OF POWER OR HIGH ENGINE BRAKING. REVISION. Purpose: 2017 - 2019 model motorcycles equipped with a Milwaukee-Eight? engine can experience a condition known as sumping during extended periods at high rpm or under heavy engine load.
• 10153989Jan 22, 2019Steering, Transmission and drivetrain. TECH ARTICLE TA0016: 2014 and Later Touring Steering Head Bearing Adjustment. Purpose: During recent dealer visits to observe steering head bearing adjustment process, Harley-Davidson staff observed that some dealers are not correctly following the service manual steering head bearing adjustment process. Issue: Steering head bearings on 2014 and later Touring, CVO Touring and Police Touring motorcycles which may…
• 10139399Apr 27, 2018Transmission and drivetrain. TECH ARTICLE TA0023: TA0023: Crankshaft Rod Bearing. Purpose: Technicians have been falsely identifying connecting rod bearings as failed due to a perception of resistance as the rods are rotated. The clearance of the Twin Cam and Milwaukee-Eight® crank pin bearings are maintained to a very tight range. This optimizes performance and maintains low mechanical noise in operation. The connecting rod bore can also…
• 10193480Dec 18, 2017Equipment. The purpose of this service bulletin is to communicate updates and corrections to certain 2008-2016 service literature.
• 10125152Dec 1, 2017Transmission and drivetrain. SERVICE BULLETIN M1426D: SAFETY RECALL CODE 0169 - 2016 BLACK CLUTCH MASTER CYLINDER (REVISION). Reason for Revision: Due to improved kit availability, and for customer and dealer convenience, the "Quarantine and Inspection" process has been removed for all remaining vehicles affected by Safety Recall 0169. All remaining 0169 repairs can proceed directly to the "Wash and Rebuild" process. See Required Dealer…
• 10124217Oct 17, 2017Steering. TECH ARTICLE TTA0016: 2014 and Later Touring Steering Head Bearing Adjustment. Revised. Issue: Steering head bearings on 2014 and later Touring, CVO Touring and Police Touring motorcycles which may not have been adjusted correctly using the service manual procedure at dealerships. Resolution: NOTE - Never make adjustments by feel. Always follow the process in the appropriate service manual.
• 10124215Oct 6, 2017Equipment. TECH TIP CRUISE CONTROL AND PTT BUTTON CONFIGURATION USING DIGITAL TECHNICIAN II. Issue: Some CB (Citizens band) radio equipped Touring model customers have expressed concern about manipulating the PTT (Push to talk) button on the right hand control, while operating the throttle control. Symptom: Rider's comfort.
• 10124216Sep 27, 2017Transmission and drivetrain. TECH ARTICLE TA0022: Transmission to Primary Oil Transfer. During service intervals, customers or dealers may find oil level in the primary above the clutch cover opening. This also is accompanied by low transmission oil level. 2014 - 2016 Vehicles:For Twin-Cam models, replace the oil seal (Part No. 12068) and sprocket shaft spacer (Part No. 24009-06). 2017 and Later Vehicles: Check the primary and transmission oil…
• 10125141Sep 18, 2017Equipment, Electrical system. SERVICE BULLETIN M1442: BOOM! BOX INFOTAINMENT SYSTEM GENERAL INFORMATION AND SOFTWARE RELEASE 1.21.X DESCRIPTION. This bulletin helps the dealer locate needed information to update and service Boom! Box Audio Infotainment systems. It also lists software revisions and the fixes addressed in each revision.
• 10117896Jul 31, 2017Electrical system. PARTS & ACCESSORIES BULLETIN PAB1067: SCREAMIN? EAGLE SMART TUNE PRO RELEASED FOR SHIPMENT. Purpose is to notify dealers that the Smart Tune PRO ? Automatic Tuning Module is 50-state U.S. EPA approved and released for shipment.
• 10109605Mar 31, 2017Steering, Equipment. Technical Article TA0016: MY14-17 Touring and CVO Touring Vehicles with fork mounted fairings; Steering head bearings on 2014 and later Touring and CVO Touring motorcycles which may not have been adjusted correctly using the service manual procedure at dealerships. During recent dealer visits to observe steering head bearing adjustment process, Harley-Davidson staff observed that some dealers are not correctly…
• 10115982Feb 20, 2017Transmission and drivetrain. Phone Campaign. MY16 Touring Clutch Master Cylinder Part Return from dealers for inspection.
• 10096814Feb 1, 2017Electrical system. Tech articles: installation of boom! Infotainment software release 1.20.2 may cause the infotainment system to freeze and become non-responsive to inputs from the hand controls, soft keys, or touch screen. An ignition cycle off-on may get the system to respond or it may not. If a customer is experiencing this issue, update software to release 1.20.3.
• 10125156Jan 16, 2017Electrical system, Equipment. Service Bulletin M1430B: BOOM! BOX INFOTAINMENT SYSTEM GENERAL INFORMATION AND SOFTWARE RELEASE 1.20.X DESCRIPTION informs the dealer network that Boom! software version 1.20.3 released December 19, 2016 and is now available to download. This also provides notice that revision 1.20.2 was found to be corrupt. Do not install version 1.20.2 and delete any stored copies.
• 10096304Dec 19, 2016Electrical system, Equipment. This bulletin helps the dealer locate needed information to update and service boom! Box audio infotainment systems. It also lists software revisions and the fixes addressed in each revision.

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