Mercedes W213 350D OM642.873 Diesel Engine Unit ECU A6429007401 Automatic

Mercedes W213 350D OM642.873 Diesel Engine Unit ECU is a factory-original engine control unit designed for a diesel engine paired with an automatic transmission. This component from the Electronic control modules and controllers category is responsible for the precise management of the powertrain, ensuring stable performance and proper integration with other vehicle systems. Thanks to the original ECU design, you maintain engine operating characteristics consistent with the manufacturer's standards.

Specifications and technical data

• SKU: A6429007401-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6429007401
• Substitutable numbers: A6429007401, A 642 900 74 01, 0281031612, 0 281 031 612, A6429012400, A 642 901 24 00
• Fuel type: Diesel
• Gearbox type: Automatic
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Function and role of the engine control unit in the Mercedes W213 350D

The presented ECU is designed to support the diesel engine in the Mercedes W213 350D model with an automatic transmission. It is responsible for key processes such as fuel metering, boost pressure control, fuel injection management, and communication with safety and comfort systems. A correctly selected engine computer allows for maintaining consistent powertrain parameters, which translates into predictable throttle response, stable operation, and compliance with factory control maps.

Compatibility with the Diesel system and automatic transmission

This controller is intended for a Diesel-powered engine, meaning its software and architecture are adapted to the specifics of diesel units – particularly for precise control of injection and common rail pressure. At the same time, the ECU works with the automatic transmission, coordinating torque delivery and communication with the transmission module. As a result, gear shifts occur predictably, and the engine and transmission operate within a consistent load range.

ECU characteristics and advantages of use

As an Engine Control Unit, this module serves as the central "brain" of the powertrain. In practice, this means:

• coordination of sensors and actuators within the engine,
• real-time correction of operating parameters depending on load and driving conditions,
• integration with vehicle diagnostic systems, which facilitates service and technical condition monitoring,
• maintenance of factory performance and fuel consumption characteristics. Using an original controller from the same ECU family reduces the risk of communication issues within the vehicle network and minimizes the need for installation modifications.

Product condition and installation aspects

The offered engine computer is in used condition, which means it has been removed from a vehicle and may require standard adaptation procedures at a workshop (e.g., programming, immobilizer matching – in accordance with service procedures for the specific model). Choosing a used ECU is a cost-effective solution that allows for restoring powertrain functionality while maintaining the vehicle's original electronic architecture. Installation by a specialized service center equipped with appropriate diagnostic software is recommended.

Expanding the control system in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional controllers, engine management modules, or related electronic units, check out the available parts in the Electronic control modules and controllers Mercedes category.

More about the role of original modules in modern cars

In premium class vehicles, such as Mercedes or Audi, maintaining electronic consistency has a direct impact on driving characteristics and user comfort. If you are interested in how original modules and controllers help maintain the factory properties of premium segment cars, it is worth reading the article Audi and pure emotion. How do used parts help maintain the brand's DNA?, which shows the importance of properly selected electronic components in modern designs.