Mercedes W164 ML300 OM642.820 204HP Engine Control ECU Kit A6429002900 Automatic

Mercedes W164 ML300 OM642.820 204HP Engine Control ECU Kit Automatic is a specialized, used module from the Electronic control modules and controllers category, designed for precise management of the powertrain in Mercedes vehicles. The controller is dedicated to diesel engines and automatic transmissions, making it an appropriate solution for professional repairs or ECU replacement in this model.

Specifications and technical data

• SKU: A6429002900-11
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6429002900
• Substitutable numbers: A6429002900, A 642 900 29 00, A6429010200, A 642 901 02 00, 0281016383, 0 281 016 383, A1649051600, A 164 905 16 00
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented controller belongs to the Engine Control Unit group, which are central modules responsible for managing engine performance parameters. In the Mercedes W164 ML300 OM642.820 204HP vehicle, it is responsible for, among other things, controlling fuel injection, cooperating with engine accessories, and communicating with other electronic systems of the vehicle. Using a unit dedicated to a diesel engine and an automatic transmission allows for maintaining proper control strategies, consistent with the factory configuration.

Compatibility and replacement numbers

The controller has been designed for a specific Mercedes powertrain configuration, which facilitates its selection based on manufacturer markings and reference numbers. The presence of interchangeable numbers allows this module to be used as a replacement for several factory variants, provided that compatibility is correctly verified. When selecting, it is recommended to use OEM markings and the electronics manufacturer's references to ensure proper cooperation with the vehicle's installation and other modules.

Technical characteristics and application

As an element from the Electronic control modules and controllers category, this ECU is intended for operation in a diesel engine environment, where aspects such as precise injection control, exhaust emission system support, and integration with an automatic transmission are essential. The module communicates with the vehicle's network, transmitting and receiving data from other controllers, which has a direct impact on engine performance, dynamics, and operational safety.

In practice, this means that a correctly selected and configured controller can restore the proper operation of the powertrain after a previous ECU failure, as well as resolve issues related to improper engine operation, communication errors, or power limitations resulting from electronic damage.

Condition, origin, and benefits of purchasing a used ECU

The offered controller is a used item, which in practice allows for a significant reduction in repair costs compared to purchasing a new module while maintaining an appropriate level of functionality. In the case of an ECU for the Mercedes W164 ML300 OM642.820 204HP, this is particularly important, as new units of this type are among the more expensive powertrain components. Choosing a verified controller from dismantling is a sensible solution for workshops and individual users who expect a technically sound and at the same time economical repair option.

Technical support and parts selection

When selecting an engine controller for a specific Mercedes vehicle, it is crucial to verify compatibility based on manufacturer numbers and vehicle configuration. It is also worth familiarizing yourself with ECU adaptation and programming procedures to ensure proper startup after installation. For those interested in a broader context of repairing electronic modules in premium cars, including engine controllers, an article describing work with used modules in BMW vehicles may be useful – you can find it here: how to take care of iDrive systems and electronic modules using parts from dismantling.

Additionally, if you want to better understand the advantages of using used powertrain components, including engines and transmissions, it is worth checking out an expert guide: why it is worth buying used powertrain units and components, where topics such as selection by OEM numbers and cost aspects are discussed.

Related control modules for Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as glow plug controllers, fan management modules, or additional ECU units cooperating with the engine, check the available parts in the Electronic control modules and controllers Mercedes category.