NHTSA service bulletin

NHTSA Service Bulletin 10248399: 2021-2023 Harley-davidson Ra1250

Official manufacturer communication context for 2021-2023 Harley-davidson Ra1250, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10248399 summary graphic for 2021-2023 Harley-davidson Ra1250
10248399NHTSA document ID
Technical service bulletincommunication type
4affected product rows
4source rows grouped

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 M1619: DIAGNOSTIC TROUBLE CODE (DTC) U04438F AND U04318F. Purpose: This bulletin informs dealers that the current software version for the Left Hand Control Module (LHCM) and Right Hand Control Module (RHCM) have Diagnostic Trouble Codes (DTCs) U04438F (reported by the LHCM) and U04318F (reported by the RHCM), that are being set-off intermittently, shortly after a starting event and then seen as historic DTCs but there are no actual faults or operational concerns with the vehicle. In these cases where these codes are being found as historic, no further troubleshooting or hardware replacement should take place to resolve these historic DTCs. This will be addressed in a future software release. NOTE: If DTCs U04438F or U04318F are found to be CURRENT, follow troubleshooting steps in the Electrical Diagnostic Manual (EDM). Current affected software levels: LHCM: 0.33.02 RHCM: 0.37.02.

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-davidsonRa12502021-2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonRa1250s2021-2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonRh1250s2021-2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonRh975s2023Ask 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 10248399?

SERVICE BULLETIN M1619: DIAGNOSTIC TROUBLE CODE (DTC) U04438F AND U04318F. Purpose: This bulletin informs dealers that the current software version for the Left Hand Control Module (LHCM) and Right Hand Control Module (RHCM) have Diagnostic Trouble Codes (DTCs) U04438F (reported by the LHCM) and U04318F (reported by the RHCM), that are being set-off intermittently, shortly after a starting event and then seen as.

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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