NHTSA Service Bulletin 10231036: 2021-2023 Mercedes-benz Amg Eqs
Official manufacturer communication context for 2021-2023 Mercedes-benz Amg Eqs, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Complaint The "Ambient Light Warning Assistance Inoperative" warning message is displayed in the instrument cluster and the light-emitting diode strips are not working. This message is set by the active ambient lighting control unit (N162/1), when a light-emitting diode strip is missing or where a fault is detected in the light-emitting diode strip. Cause The following causes are possible: 1. Rework in active ambient lighting area. The ambient lighting is switched on and the connectors are disconnected from the wiring harness.NO fault code is stored. 2. Fault code 123X87 (communication error) is stored in the active ambient lighting control unit (N162/1) and an lightemitting diode strip (E34/1-6) is displayed in the quick test with ! (exclamation mark).. 3. Fault code 186X00 (malfunction) stored in the light-emitting diode strips (E34/1-6). 4. Fault code 186x98 (overtemperature) stored in light-emitting diode strips (E34/1-6). 5. There are no fault codes stored in the active ambient lighting control unit (N162/1) and in the light-emitting diode strips (E34/1-6). Remedy 1. Lock and unlock vehicle to reset the active ambient lighting control unit (N162/1). IMPORTANT: When locking, the visual locking verification signal must be visible. Make sure that all the doors are shut. After locking, wait until the instrument cluster switches to OFF, then press unlock. 2. Run guided test as per XENTRY Diagnosis (check electric lines and connectors).
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
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10231036?
Complaint The "Ambient Light Warning Assistance Inoperative" warning message is displayed in the instrument cluster and the light-emitting diode strips are not working. This message is set by the active ambient lighting control unit (N162/1), when a light-emitting diode strip is missing or where a fault is detected in the light-emitting diode strip. Cause The following causes are possible: 1. Rework in active.
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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