NHTSA service bulletin

NHTSA Service Bulletin 11011846: 2016-2025 Mercedes-benz Amg C43

Official manufacturer communication context for 2016-2025 Mercedes-benz Amg C43, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11011846 summary graphic for 2016-2025 Mercedes-benz Amg C43
11011846NHTSA document ID
Manufacturer communicationcommunication type
16affected 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

Complaint Customer states CEL is on. Cause Quick test shows FC P0A7F00 The state of health limit of the hybrid/high-voltage battery module has been reached. No drivability concerns occurred and vehicle drives as normal. Remedy Do not replace any parts!! 254: SW has been released. Ensure all Add-ons are installed. Update A66 with the latest SW A 000 903 51 75 MY24 206: SW has been released. Ensure all Add-ons are installed. Update A66 with the latest SW A 000 903 52 75 After SW has been updated, perform the following reset procedure: Step 1: Read the State of Health Resistance - (SOH-R) Step 2: If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Drive for a duration of 60 minutes to retrain the SOH-R value. Step 3: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Park vehicle in Workshop for >12 hours in warm ambient temperature >60F, afterwards drive for a duration of 60 minutes. Step 4: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH-R is still >125%, open a TIPS case.

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-benzAmg C432024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg C63 S E2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc432016-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc632018-2022Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S2020-2023Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63 S E2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Glc63s2018, 2019Ask for service records and run the exact VIN before purchase.
Mercedes-benzC 3002024Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc2016Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 3002018-2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 300 Coupe2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 3502018-2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 350 E2018, 2020, 2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc 350 E 4matic2025Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc3002016, 2017Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc350e2019Ask 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 11011846?

Complaint Customer states CEL is on. Cause Quick test shows FC P0A7F00 The state of health limit of the hybrid/high-voltage battery module has been reached. No drivability concerns occurred and vehicle drives as normal. Remedy Do not replace any parts!! 254: SW has been released. Ensure all Add-ons are installed. Update A66 with the latest SW A 000 903 51 75 MY24 206: SW has been released. Ensure all Add-ons are.

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.

Get Full Report