NHTSA service bulletin

NHTSA Service Bulletin 10204038: 2021 Ford Redundant Mach E

Official manufacturer communication context for 2021 Ford Redundant Mach E, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10204038 summary graphic for 2021 Ford Redundant Mach E
10204038NHTSA document ID
Manufacturer communicationcommunication type
1affected product rows
82/100quality 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

Some 2021 Mustang Mach-E vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module replacement. This may be due to the battery energy control module (BECM) adjusting the cell balance (conditioning) of the battery module and should be corrected within 16 days. If the vehicle otherwise functions as designed with no related diagnostic trouble codes (DTC) setting, this concern will be corrected automatically with no further actions required by the technician.

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
FordRedundant Mach E2021Ask 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 10204038?

Some 2021 Mustang Mach-E vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module replacement. This may be due to the battery energy control module (BECM) adjusting the cell balance (conditioning) of the battery module and should be corrected within 16 days. If the vehicle otherwise functions as designed with no related.

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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