Mercedes W177 A250 264960 264.960 224HP Engine ECU Module A2649000700 Automatic

Mercedes W177 A250 264960 264.960 224HP Engine ECU Module is a factory-original electronic engine control unit designed for the petrol A250 version with an automatic transmission. This used ECU module comes from the original Mercedes production line and is a precisely matched solution for the powertrain, ensuring proper engine management and seamless integration with the automatic gearbox. By maintaining the manufacturer's specifications, it is a sensible choice for the professional repair or replacement of a faulty control unit.

Specifications and technical data

• SKU: A2649000700-6
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2649000700
• Substitutable numbers: A2649000700, A 264 900 07 00, A2649011900, A 264 901 19 00, 0261S200343, 0 261 S20 343
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The engine control unit in the Mercedes W177 A250 is responsible for coordinating all key parameters of the petrol engine's operation, including fuel injection, ignition timing, and interaction with engine peripherals. The version dedicated to the automatic transmission is configured for specific gear-shifting strategies, which translates into smooth acceleration and stable powertrain performance across the full load range.

As part of the Electronic control modules and ECUs category, the ECU module integrates with the vehicle's onboard network, communicating with other control units via data buses. A correctly selected control unit is crucial for maintaining factory performance, proper operation of safety systems, and compliance with emission standards.

Benefits of using an original ECU module

Using an original engine control unit dedicated to the 224 HP A250 version ensures:

• Full compatibility with the software and electrical architecture of the specific 264.960 engine version.
• Stable cooperation with the automatic transmission, without unwanted jerking or communication errors.
• The ability to retain factory control maps, which facilitates diagnostics and service at both authorized and independent workshops.
• Reduced risk of adaptation issues compared to generic replacements of uncertain origin.

For workshops and users, this means a more predictable repair process, shorter diagnostic time, and easier integration with the existing vehicle installation.

Technical characteristics and compatibility

The presented control unit is designed for the petrol powertrain and works with an automatic transmission, which is important when selecting the appropriate ECU for a specific car configuration. In practice, this means that the control logic has been prepared for the specific loads, shift points, and engine protection strategies typical of this Mercedes version.

The module has an assigned OEM part number and associated interchangeable numbers, which facilitates its identification in catalogs and service systems. When selecting, it is worth using the VIN and manufacturer markings to ensure full hardware and software compatibility with the specific vehicle.

Product condition and use in service practice

The offered engine control unit is a used item, which in the case of ECU modules often represents a cost-effective solution while maintaining high functionality. Such modules are frequently used in professional workshops as a base for adaptation or programming for a specific car, especially when the original control unit has suffered electronic or mechanical damage.

In service practice, such a control unit can be used both as a direct replacement and as an element intended for further configuration (e.g., software matching, coding, or synchronization with the immobilizer). As a result, it provides a functional repair solution for Mercedes W177 A250 users who expect to fully restore the efficiency of their powertrain.

Selection, installation, and technical support

When selecting an engine control unit for the Mercedes A-Class W177, it is crucial to pay attention to the compatibility of markings, engine version, and transmission type. It is recommended that the installation and any necessary programming of the module be entrusted to a specialized service center with appropriate diagnostic equipment, which minimizes the risk of communication errors in the vehicle's network.

If you want to better understand how to safely use used control units and sensors, how to select them by OEM numbers, and what the adaptation process looks like in practice, check out the guide: Used automotive electronics – second-hand ECU modules and sensors. The article discusses hardware and software compatibility issues, as well as typical installation scenarios in modern cars.

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 controllers, engine management modules, or electronic control units, check out the available parts in the Electronic control modules and ECUs Mercedes category.