Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU A6421507100 Automatic

Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU is a specialized electronic control unit designed for the OM642 diesel engine in the 4-Matic version with an automatic transmission. This component from the Electronic control modules and controllers category is responsible for precise engine management, ensuring stable performance and proper interaction with the drivetrain. Thanks to its factory design, the ECU is tailored to the specifics of the 224 HP diesel engine, which facilitates its integration with the vehicle's electrical system.

Specifications and technical data

• SKU: A6421507100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421507100
• Substitutable numbers: A6421507100, A 642 150 71 00
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented engine computer has been designed to work with the OM642 diesel unit in the Mercedes W164 model, specifically the ML350 version with 4-Matic drive. As a central element of the engine control system, it supervises, among other things, fuel dosing, auxiliary equipment operation, and communication with other vehicle modules, which translates into correct power and torque characteristics.

Being dedicated to a diesel engine and an automatic transmission configuration allows for maintaining the consistency of the drivetrain's operating parameters. The controller is a factory solution from the Mercedes range, which promotes compliance with the original electrical architecture and vehicle software.

Benefits of using an original ECU module

Using an original engine computer in a Mercedes W164 ML350 OM642 4-Matic provides a number of practical benefits:

• preservation of factory engine control maps adapted to the specific drive configuration,
• proper cooperation with the automatic transmission and other electronic modules,
• consistency with the vehicle's diagnostic systems, which facilitates service and potential software updates,
• reduction of the risk of communication problems within the vehicle network compared to universal solutions.

For the user, this means more predictable vehicle behavior, stable operation of the power unit, and the possibility of further maintenance in accordance with the manufacturer's standards. When replacing the controller, it is important to match it to the specific vehicle configuration, including the fuel type and transmission type, which this model fulfills.

Product characteristics and condition

The offered engine computer comes from the Electronic control modules and controllers segment and is a used item. Such components usually come from vehicle dismantling, which allows for the reuse of functional modules in other units of the same series. A used controller can be an economical solution while maintaining compliance with factory design standards.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and take into account the adaptation or programming procedures required for the given unit. A properly selected ECU module for a diesel engine with an automatic transmission allows for restoring the correct operation of the drivetrain after the failure of the previous controller.

Selection and integration with the vehicle's electronic system

When choosing an engine computer for a Mercedes W164 ML350 OM642 4-Matic, it is crucial to match it to the electronic architecture of the specific car. In practice, this means paying attention to:

• compatibility with the diesel power unit,
• adaptation to the automatic transmission,
• belonging to the appropriate group of controllers within the Mercedes brand.

A properly selected module facilitates the coding and configuration process, and also minimizes the risk of communication errors with other controllers. Thanks to this, it is possible to efficiently restore the full functionality of the vehicle after replacing the ECU, without the need for interference with the electrical installation.

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 engine controllers, drivetrain management modules, or other electronic control units, check the available parts in the Mercedes electronic control modules and controllers category.

Used engine controller – what to pay attention to

When choosing a used engine computer, it is worth paying attention to the origin of the module, compatibility with the drive configuration, and the possibility of proper coding in the vehicle. It is also good practice to consult with a workshop specializing in automotive electronics, which will assess the condition of the installation and the correct operation of other system components.

To better understand the specifics of such solutions and consciously decide to install a used ECU, it is worth reading the advice contained in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, where key aspects of selecting and operating electronics from the secondary market are discussed.