NHTSA ID Number: 11023967
Manufacturer Communication Number: M1490
TSB/Document Date: 2025-10-07
Summary
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 Unit (EHCU) reflash support; EHCU Module (Part No. 41100123): Addressed issue where module became unrecoverable after failed reflash attempted. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
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TSB/Document ID: M1490
Replacement Service Bulletin Number:
MFR Communication Date: 2025-09-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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SERVICE BULLETIN
M1490
2025-09-05
M1490 (V 25.8.9): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES
New Features
Purpose for Service Bulletin
LiveWire
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)
Markets Affected
• S2 Del Mar (DM), S2 Mulholland (MH), S2 Alpinista (AP) Calibration bundle 10.1.9/10: Vehicle Supervisory Controller
(VSC), Onboard Charger (OBC), Rechargeable Energy
Storage System (RESS), Telematic Control Unit (TCU), Body
Control Module (BCM) reflash updates
• Features: Vehicle capability of reverse and roll-forward
regeneration
All markets are affected.
New Software Update
NOTE
The TECHLINK 3 (PART NUMBER: HD-48650-TL3) supports
Controller Area Network (CAN) and J-1850 protocol vehicles.
• 6-pin CAN vehicles are recommended to use Techlink 3
(TL-3)
• Support for new part numbers: VSC 41001756RD, OBC
41001753RD, RESS 66000297A, 66000353A
2021-2023: Pan America (RA1250), Pan America S (RA1250S)
• Electronic Control Module (ECM) Calibration updated
• BCM Calibration updated
• All 2021 (and later) vehicles must use TL-3 (connects to Red
DLC on the vehicle)
2024: Pan America (RA1250), Pan America S (RA1250S), CVO
Pan America (RA1250SE)
• 4-pin (J-1850) vehicles are recommended to use TL-3. This
includes all Fuel Injected Harley-Davidson vehicles 2002
and later.
• ECM Calibration updated
TECHLINK 3 (PART NUMBER: HD-48650-TL3) will not support
Buell, VDO and Magneti Marelli vehicles (4-pin DLC). Support
for those vehicles is available via TECHLINK II (PART
NUMBER: HD-48650-1).
• Updated EHCU software and calibration
For dealerships with firewall implementation, the URLs below
need to be white listed:
• https://hdpublicfacadesvc.bosch-automotive.com
• https://keycloak.bosch-automotive.com
2022-2025: Nightster (RH975), Nightster Special (RH975S)
Changes
• Corrected Diagnostic Trouble Code (DTC) descriptions on
VRSC Anti-lock Braking System (ABS): C1095, C1216
• Module Replace – 2025 Fat Boy Gray Ghost (FLSTFI):
Updated Speedometer (SPDO), Left Hand Control Module
(LHCM), Right Hand Control Module (RHCM) modules
• Resolve DT II error in V25.6 which occurred when Vehicle
Identification Number (VIN) not present
Version 25.8.9
Version 25.6.4
Release Date:
Release Date:
• Week of September 2, 2025
• Week of June 16, 2025
Changes
New Features
• LiveWire 2024 S2MH: Removal of incorrect Electro Hydraulic
Control Unit (EHCU) reflash support
• EHCU Module (Part No. 41100123): Addressed issue where
module became unrecoverable after failed reflash attempt
Version 25.8.7
Release Date:
Updated ECM Calibration (resolves post catalyst O2 sensor
response)
• 2025: Road King Special (FLHRXS), Road Glide (FLTRT),
FreeWheeler (FLRT), Road Glide 3 (FLTRT), and Tri-Glide
(FLHTCUTG)
Updated EHCU Calibration (Service Bulletin M1691 - Linked
Braking Functionality Improvement)
• Week of August 19, 2025
NOTE
In the interest of preserving customer safety and satisfaction, always check for outstanding recalls whenever any motorcycle is brought into your dealership for either maintenance or service.
ROUTING
INITIAL HERE
SERVICE
MANAGER
SALES MANAGER PARTS MANAGER
WARRANTY
PROCESS
MANAGER
LEAD TECHNICIAN TECHNICIAN NO. 1 TECHNICIAN NO. 2 TECHNICIAN NO. 3 RETURN THIS TO
• 2023: CVO Street Glide (FLHXSE), CVO Road Glide
(FLTRXSE)
Version 25.3.4
• 2024: CVO Street Glide (FLHXSE), CVO Road Glide
(FLTRXSE), CVO Road Glide ST (FLTRXSTSE), Road Glide
(FLTRX), Street Glide (FLHX)
• Week of April 7, 2025
• 2025: CVO Street Glide (FLHXSE), CVO Road Glide
(FLTRXSE), CVO Road Glide ST (FLTRXSTSE), CVO Road
Glide RR (FLTXRRSE), Road Glide (FLTRX), Street Glide
(FLHX), Street Glide Ultra (FLHXU)
• 2025 Pan America S and CVO Pan America (RA1250S/SE)Update BCM calibration to address DTC C182215. Refer to
Service Bulletin M1682 for details.
Release Date:
Changes
Changes
• Correct issue which caused ECM reflash to fail on 2025
Street Bob (FXBB) (France 35kw)
• Added Vehicle Picture for 2025 fat Boy Gray Ghost (FLSTFI)
Version 25.3.3.
• Added support for instrument (Part No. 70901272)
Release Date:
• Updated description text for ECM P&A Calibration 41001085
• Week of March 10, 2025
• Support for LiveWire S2 VSC (Part No. 41001094A2D)
Changes
• Added instruction to Module Replace to run procedure after
reflash when firmware is out of date
• Touring ECM - Added DTC description for P250700
Version 25.5.1
• Updated Data Item lists for 2025 Right and Left Hand Control
Modules (R&LHCMs)
Release Date:
• Week of May 12, 2025
• 2025 Softail EHCU – Descriptions added for Diagnostic
Trouble Codes (DTCs)
New Features
• LiveWire S2 – OBC – Updated DTC list
• LiveWire S2 – Updated calibration release bundle 9.5.8
• Vehicle Setup – “Gear Indicator Calibration” applied to 2025
Softail and 2025 Street Glide Ultra (FLHXU)
Changes
• LiveWire S2 – Updated configuration values for BCM Module
Replace. This enables accessory power load shed
functionality.
• Resolve DT II crash in V25.4.5 which occurred when VIN
not present in ECM
• 2025 Softail (JPN) FLFB, FXBR – updated ECM Calibration
4100722D
• Vehicle Setup – TPMS – Updated tire selections to include
2025 Softail
• 2024-2025 Touring Hand Control Reflash Support for part
numbers: 71500715A, 71500713A
• CVO Pan America (RA1250SE) - Remove Parts and
Accessories (P&A) Quickshifter Vehicle Setup, as this model
is factory equipped
Version 25.2.4
Version 25.4.5
• Week of February 11, 2025
Release Date:
Changes
• Week of May 5, 2025
New Features
• Added support 2025 Revolution® Max ‘MLY’ Vehicle
Identification Numbers (VINs)
• Support 2025 CVO Road Glide RR (FLTRXRRSE)
Version 25.2.2.
• Support 2025 Fat Boy Gray Ghost (FLSTFI)
Release Date:
• Support “Legal” Stage 4 ECM calibrations for 2017-2020
Softail, Touring, and CVO models for California region
vehicles
• Week of January 22, 2025
Release Date:
Changes
Changes
• Issue fixed for certain 2025 models that were not offered
ECM calibrations
• Tire Pressure Monitoring System (TPMS) Configuration –
Availability limited to vehicles which have optional tire sizes
Version 25.2.1
• TPMS Replacement – updated photo to show revised sensor
• Vehicle Setup - Limit PTT/Cruise Swap to 2020 and prior
vehicles
Release Date:
• Week of January 20, 2025
• Infotainment Control Unit (IFCU) – System Info – Add P&A
Software version field
• 2025 Pan America ST (RA1250ST) and CVO Pan America
(RA1250STSE) – Module Replace – enable Original
Equipment (OE) Quickshift setting
• LiveWire S2 – Correction to various Guided Diagnostic
procedures and callouts
2/3
M1490
New Features
• Support 2025: Street Glide Ultra (FLHXU), Heritage Classic
(FLHC), Fat Boy (FLFB), Breakout (FXBR), Street Bob
(FXBB), Low Rider S (FXLRS), Low Rider ST (FXLRST),
Sportster S (RH1250S), Pan America ST (RA1250ST), CVO
Pan America (RA1250SE), CVO Road Glide ST
(FLTRXSTSE), CVO Street Glide (FLHXSE), CVO Road
Glide (FLTRXSE), Pan America S (RA1250S), Nightster
(RH975), Nightster S (RH975S) (including Guided
Diagnostics)
Version 25.1.1
Release Date:
• Week of January 1, 2025
• 2021 vehicles must use TECHLINK 3 (PART NUMBER:
HD-48650-TL3) (connects to Red DLC on the vehicle).
Digital Technician™ II
• The Digital Technician II software version updates are
automatic and occur while connected to the Internet.
• If an internet connection is lost, the download continues from
where it stopped.
• If the Digital Technician II software is open, the application
prompts the user to exit before the install can continue.
• All Digital Technician II software updates are deployed
automatically via the XMS agent software and require a
minimum model year software version (example: Model Year
2021 = minimum version v21.0).
New Features
• Support 2025: Road King Special (FLHRXS), Street Glide
(FLHX), Road Glide (FLTRX), Tri-Glide Ultra (FLHTCUTG),
Freewheeler (FLRT), Road Glide 3 (FLTRT) (including
Guided Diagnostics)
• Support 2025: LiveWire S2 Alpinista (S2AP)
• Reflash – EHCU: Support P&A Inverted Fork offering for
2025 Road Glide (FLTRX) and 2024 Road Glide (FLTRX),
Street Glide (FLHX)
• IFCU Customization: Support for additional P&A speaker
options
Changes
• S2 Models – Update TCU reflash procedure for additional
robustness
Version 25.0.2
Release Date:
• Week of December 2, 2024
New Features
• Support for 2025 Police Electra Glide (FLHTP), Police Road
King (FLHP), Police Road Glide (FLTRXP) and Pan America
S (RA1250S)
• Module Replace – Now supports Hand Control for applicable
models
• Reflash – Hand Control – enabled for 2024 CVO Street Glide
(FLHXSE), CVO Road Glide (FLTRXSE), Street Glide
(FLHX), Road Glide (FLTRX), and CVO Road Glide ST
(FLTRXSTSE)
• LiveWire 2024 S2DM EV3: Updated calibration for (OBC,
RESS, VSC, TCU) modules
Changes
• Update to Service Information Portal (SIP) URL
Required Dealer Action
Techlink
• The TECHLINK 3 (PART NUMBER: HD-48650-TL3) will
support CAN protocol vehicles (6-pin Data Link Connector
(DLC)) at launch. J-1850 protocol (4-pin DLC) support is
planned for early 2020.
• Techlink 3 will not support Harley-Davidson Buell, Vereinigte
DEUTA–OTA (VDO) and Magneti Marelli vehicles (4-pin
DLC). Support for those vehicles is available via TECHLINK
II (PART NUMBER: HD-48650-1).
M1490
3/3
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