NHTSA Service Bulletin 10136156: Mercedes Benz Mercedes Benz
Official manufacturer communication context for model years not specified Mercedes Benz Mercedes Benz, 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.
Increased idle speed or idle speed gets stuck. Upon every engine start, even starts following an ECO stop; the engine speed rises and sticks to approximately 1200 rpm for a time period of approximately 25 seconds. Thereafter, the engine speed will drop down and settle into the idle speed range within a time period of approximately 40-45 seconds. No fault codes are logged in the engine control unit and the vehicle exhibits no other problems.
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 10136156?
Increased idle speed or idle speed gets stuck. Upon every engine start, even starts following an ECO stop; the engine speed rises and sticks to approximately 1200 rpm for a time period of approximately 25 seconds. Thereafter, the engine speed will drop down and settle into the idle speed range within a time period of approximately 40-45 seconds. No fault codes are logged in the engine control unit and the vehicle.
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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