NHTSA service bulletin

NHTSA Service Bulletin 10240476: 2023 Harley-davidson Flhxse

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

NHTSA service bulletin 10240476 summary graphic for 2023 Harley-davidson Flhxse
10240476NHTSA document ID
Technical service bulletincommunication type
2affected 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 M1596: 2023 CVO STREET GLIDE (FLHXSE) AND ROAD GLIDE (FLTRXSE) COOLING SYSTEM. PURPOSE: This bulletin informs dealers how important is it to understand the Proper Check, Fill and Bleed Procedures for the 2023 CVO Street Glide (FLHXSE) and Road Glide (FLTRXSE) cooling system. When servicing the new cooling system on the Milwaukee-Eight 121 Variable Valve Timing (VVT) powered vehicle, it is important to understand how to check the coolant level, drain, fill and bleed the system. Failure to closely follow the vacuum bleed procedures, will result in an incomplete system purging, potentially causing engine overheating.

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-davidsonFlhxse2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFltrxse2023Ask 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 10240476?

SERVICE BULLETIN M1596: 2023 CVO STREET GLIDE (FLHXSE) AND ROAD GLIDE (FLTRXSE) COOLING SYSTEM. PURPOSE: This bulletin informs dealers how important is it to understand the Proper Check, Fill and Bleed Procedures for the 2023 CVO Street Glide (FLHXSE) and Road Glide (FLTRXSE) cooling system. When servicing the new cooling system on the Milwaukee-Eight 121 Variable Valve Timing (VVT) powered vehicle, it is important.

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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