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Mercedes-Benz engine control unit software error may cause a sudden engine stall, without the ability to restart the vehicle.

NHTSA campaign 21V-843 · Reported October 29, 2021 · 8,669 vehicles affected

AFFECTED MODELS
Mercedes-Benz S-Class
VEHICLES AFFECTED
8,669
REMEDY
Dealers will update the engine control unit software, free of charge.
COST
Free

The short version

Mercedes-Benz USA, LLC reported a problem with the engine control module (ecu/ecm) software. Here is what owners need to know.

WHAT

An engine control unit software error may cause a sudden engine stall, without the ability to restart the vehicle.

WHY IT MATTERS

An engine stall can increase the risk of a crash.

WHAT TO DO

Take it to a dealer — they will update the engine control unit software, free of charge.

Affected vehicles

These model years are included in NHTSA campaign 21V-843.

YEAR RANGEMODEL
2021Mercedes-Benz S-Class

What changed

Newest first. The record shows both when the recall began and what has changed since.

  1. Recall reported to NHTSA. LATEST

Drive one of these? Check your VIN to see if your specific vehicle is affected.

Check your VIN

What this record means

Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.

Not affiliated

MyAutoRecalls is not affiliated with Mercedes-Benz USA, LLC or the National Highway Traffic Safety Administration.