NHTSA service bulletin

NHTSA Service Bulletin 10207206: 2022 Mercedes-benz C 300

Official manufacturer communication context for 2022 Mercedes-benz C 300, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10207206 summary graphic for 2022 Mercedes-benz C 300
10207206NHTSA document ID
Manufacturer communicationcommunication 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

Complaint Model series 206: Front seat heating nonfunctional Cause Cause is an internal error in the 'seat heating' control unit with the following designation: "B221A96 - An internal error is present in the 'seat heating' control unit. There is an internal component fault." Remedy Please do not perform any work. Do not flash, update, code or recommission the 'seat heating' control unit! Please create a PTSS case. The 'seat heating' control unit is required for analysis. Additional required information: In which situation/under which conditions did the complaint occur? Is there any specific behavior to note regarding the customer's use of the vehicle? Was the vehicle affected by undervoltage or are there other fault memory entries stored in the vehicle that can be attributed to an unstable power supply? Was the vehicle connected to a battery preservation device or charger? (If yes, what sort of charger was used?)

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
Mercedes-benzC 3002022Ask 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 10207206?

Complaint Model series 206: Front seat heating nonfunctional Cause Cause is an internal error in the 'seat heating' control unit with the following designation: "B221A96 - An internal error is present in the 'seat heating' control unit. There is an internal component fault." Remedy Please do not perform any work. Do not flash, update, code or recommission the 'seat heating' control unit! Please create a PTSS case..

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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