NHTSA service bulletin

NHTSA Service Bulletin 10211174: Harley-davidson Harley-davidson

Official manufacturer communication context for model years not specified Harley-davidson Harley-davidson, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10211174 summary graphic for model years not specified Harley-davidson Harley-davidson
10211174NHTSA document ID
Warranty program / extensioncommunication type
1affected product rows
1source 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 M1391A: MIDTRONICS GRX-3110 SOFTWARE UPDATE. PURPOSE: REVISION. This bulletin is to inform the dealer network that a software update to the GRX-3110 is now available. HD BATTERY DIAGNOSTIC STATION (PART NUMBER: GRX-3110HD). Update 192-210335K, change from Warranty Code to Test Code that was introduced in version J, this update makes your GRX machine capable of testing and charging the Parts and Accessories LiFe batteries ( 4 Ah, 6 Ah, 8 Ah).addresses new battery part numbers for 2021 models and revised menu selections.

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-davidsonHarley-davidsonmodel years not specifiedAsk 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 10211174?

SERVICE BULLETIN M1391A: MIDTRONICS GRX-3110 SOFTWARE UPDATE. PURPOSE: REVISION. This bulletin is to inform the dealer network that a software update to the GRX-3110 is now available. HD BATTERY DIAGNOSTIC STATION (PART NUMBER: GRX-3110HD). Update 192-210335K, change from Warranty Code to Test Code that was introduced in version J, this update makes your GRX machine capable of testing and charging the Parts and.

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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