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

Mercedes W205 C200 274.920 184HP Engine Control ECU Kit Automatic is an original electronic control module designed for a petrol engine unit paired with an automatic transmission. This specialized controller from the Electronic control modules and ECUs category ensures precise engine management, supporting stable power, smooth gear shifts, and predictable throttle response. It is a solution for users expecting factory compatibility and consistency with the electrical architecture of a Mercedes vehicle.

Specifications and technical data

• SKU: A2749000800-7
• 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, A2059009321, A 205 900 93 21, 5DK010772, 5DK 010 772, A0999004101, A 099 900 41 01
• 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 W205 C200 model is responsible for coordinating all key parameters of the petrol engine's operation, including fuel injection, ignition, and communication with the automatic transmission. Thanks to this module, the powertrain maintains stable RPM, predictable acceleration, and correct response to load changes, which translates into comfort in daily use.

The version dedicated to petrol engines and automatic transmissions is configured for specific operating maps, torque characteristics, and gear-shifting strategies. Using the correct controller helps avoid communication issues within the vehicle's network, transmission operation errors, and malfunctions of driver assistance systems.

Benefits of using an original module

Choosing an original engine control unit for the Mercedes W205 C200 provides a number of practical technical benefits:

• Factory compatibility with the vehicle's electrical installation and communication bus, without the need for wiring modifications.
• Consistency with the vehicle's software, which facilitates adaptation and coding during installation.
• Proper matching to the characteristics of the petrol engine and automatic transmission.
• The ability to maintain the original operating parameters of the powertrain after repairing or replacing a damaged module.

For workshops and users, this means lower risk of diagnostic problems, easier configuration, and predictable vehicle behavior after the repair is completed.

Application in the petrol + automatic powertrain

The presented controller is designed to work with a petrol engine and an automatic transmission, which is crucial when selecting parts. The module handles gear-shifting strategies, torque control during gear changes, and communication with other vehicle systems, such as the electronic stability program or safety systems.

In practice, a correctly selected controller allows for maintaining:

• smooth and repeatable gear shifting,
• stable engine operation when cold and warm,
• consistent operation of the driving modes offered by the vehicle.

Thanks to this, the Mercedes W205 C200 powertrain retains the characteristics intended by the manufacturer, which is especially important when performing repairs after an engine electronics failure.

Characteristics of the used product

The offered engine control unit is a used item, which is a cost-effective solution while maintaining the manufacturer's original specifications. Such modules come from vehicle dismantling, which allows for the reuse of functional components in other units of the same model. For many users and service centers, this is a reasonable compromise between price and maintaining factory build quality.

Before installation, a standard workshop procedure is recommended, including diagnostics, potential programming, and adaptation to the specific vehicle. A properly performed installation process allows you to fully utilize the module's potential and restore the correct operation of the engine control system.

Integration with other electronic modules

The engine control unit in the Mercedes W205 C200 works with many other electronic elements of the vehicle, creating an extensive communication network. Understanding the principles of this cooperation is important for mechanics and electronics specialists dealing with the diagnostics of modern cars. If you want to expand your knowledge about the operation of controllers, comfort modules, and multimedia systems in premium cars, it is worth checking out our guide material – it is described in detail 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 parts from dismantling?, which shows universal principles for handling used electronic modules.

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