NHTSA service bulletin

NHTSA Service Bulletin 11031147: 2016-2026 Harley-davidson Fld

Official manufacturer communication context for 2016-2026 Harley-davidson Fld, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11031147 summary graphic for 2016-2026 Harley-davidson Fld
11031147NHTSA document ID
Technical service bulletincommunication type
121affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

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).

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
Harley-davidsonFld2016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlde2017-2020Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfb2018, 2019, 2025, 2026Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anv2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anx2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbsanv2020, 2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlh2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhc2017, 2018, 2019, 2020, 2021, 2025, 2026Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs Anv2018-2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhfb2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhlt2026Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhltse2026Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhp2016-2025Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr2016-2022Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhrc2016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhrxs2017-2025Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 11031147?

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.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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