Mercedes W205 C200 274.920 184HP Engine Control Module ECU Automatic A2749000800

Mercedes W205 C200 274.920 184HP Engine Control Module ECU Automatic is a specialized module from the Electronic control modules and controllers group, designed for precise management of the powertrain in the gasoline version with an automatic transmission. It is responsible for advanced engine parameter control, ensuring stable operation, correct communication with other vehicle systems, and proper matching to the W205 C200 model configuration.

Specifications and technical data

• SKU: A2749000800-8
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2749000800
• Substitutable numbers: A2749000800, A 274 900 08 00, A2749010600, A 274 901 06 00, 0261S08785, 0 261 S08 785, A2059003419, A 205 900 3419, A 274 900 29 00, A2749002900
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented controller is a central element of the gasoline engine management system in the Mercedes C-Class W205 generation, C200 version. The module oversees, among other things, the fuel injection process, ignition, and cooperation with the automatic transmission, so that the powertrain operates in a predictable manner optimized for performance and refinement. Thanks to dedicated software, the controller is matched to the characteristics of the 184 HP engine, which allows for consistency with the factory vehicle configuration.

Benefits of using an original module

Using an original engine controller in a Mercedes W205 C200 ensures proper communication with other electronic modules in the vehicle, such as safety systems, comfort systems, or the automatic transmission. A properly selected module minimizes the risk of diagnostic errors, engine starting problems, or incorrect transmission operation. For workshops and users, this means a more predictable installation process and easier calibration during the adaptation of the controller to a specific vehicle.

Application in a gasoline system with an automatic transmission

The controller has been designed to work with a gasoline engine and an automatic transmission, which is crucial when selecting a replacement part. The appropriate configuration of control maps and gear-shifting logic allows for maintaining smooth gear changes, correct reactions to load, and compliance with factory powertrain operating strategies. Proper selection of the module for the fuel type and transmission type reduces the need for additional software modifications after installation.

Characteristics of the used product

As an aftermarket component, the controller represents an attractive cost-effective solution compared to new components, while maintaining the original manufacturer's specifications. Such modules are frequently chosen by professional workshops specializing in the Mercedes brand, especially for repairs where combining technical compliance with a reasonable budget is key. After installation, standard service procedures should be expected, such as programming, adaptation, and potential coding for the specific vehicle.

Integration with other modules and diagnostics

The engine controller in the Mercedes W205 C200 works with an extensive network of electronic modules, which is why its correct operation has a direct impact on the ability to perform full vehicle diagnostics. A correctly selected module facilitates work with service testers, allows for reading and clearing errors, and performing adaptation procedures. For workshops, this means a more efficient repair process, and for the user – greater operational predictability. 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 control modules, ECU units, or auxiliary controllers, check the available parts in the Electronic control modules and controllers Mercedes category.

Technical support and part selection

When selecting an engine controller for a specific version of the Mercedes W205 C200, it is worth paying attention to compatibility with the vehicle configuration and programming requirements. Materials describing the operation of modern electronic modules, their integration with comfort and safety systems, and the specifics of dismantled parts can be helpful. Practical tips on using used controllers and other modules in premium cars can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?, which discusses universal principles of working with automotive electronics. Additional information on when choosing a used control module is technically and economically justified, and when it is better to reach for other solutions, is provided in the guide Renovation and repair of German cars: which used parts are worth buying and which are better to avoid?, useful for both workshops and conscious owners of Mercedes vehicles.