Mercedes W205 C200 274.920 184HP Engine ECU Kit A2749000800 Key Lock Automatic

Mercedes W205 C200 274.920 184HP Engine Computer A2749000800 Kit is a complete, factory control unit designed for the power unit in the W205 C-Class model. This kit from the Electronic Control Modules and Controllers group ensures proper management of engine operating parameters and cooperation with other vehicle systems, maintaining the manufacturer's intended characteristics. It's a solution for users who expect seamless electronic operation consistent with the car's original configuration.

Specifications and technical data

• SKU: A2749000800-5
• 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
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and Function of the ECU Kit

The presented engine computer kit is dedicated to the 274.920 gasoline engine with 184 HP in the Mercedes C-Class W205 generation. It is responsible for precise control of the combustion process, fuel injection, ignition timing, and cooperation with safety and comfort systems, which translates into stable driving characteristics and accurate response to driver commands.

As an element from the Electronic Control Modules and Controllers category, the ECU kit integrates with the vehicle's electrical architecture, enabling communication with other controllers via data buses. This ensures consistent operation of systems such as the powertrain, driver assistance systems, and comfort modules.

Powertrain Compatibility

The engine computer has been configured to work with an automatic transmission, which is crucial for smooth gear changes and proper torque management. The controller transmits information about the current load, engine speed, and power demand to the transmission, and in return, receives data necessary for optimizing engine performance.

This adaptation to a specific drivetrain configuration minimizes the risk of communication errors between modules, simplifies diagnostics, and allows for the preservation of factory control strategies, which is particularly important in modern premium vehicles.

Benefits of Using an Original Module

Using an original engine computer kit in a Mercedes W205 C200 allows you to maintain the power unit's operating parameters at the level intended by the manufacturer. In practice, this means:

• stable engine starting and predictable response to the accelerator pedal,
• proper cooperation with traction control and stability systems,
• retention of factory control maps, promoting smooth engine operation across the full load range.

For the user, this translates to more predictable vehicle behavior, easier diagnostics at the service center, and the ability to utilize factory service procedures and software updates.

Product Characteristics and Condition

The offered ECU kit comes from a Mercedes vehicle and is a used part, allowing for an economical replacement of the controller while maintaining the original specifications. This type of solution is particularly attractive for repairs where matching the electronics to a specific engine and equipment version is crucial.

Before installation, it is recommended to verify compatibility with the vehicle's VIN and equipment configuration, as well as to perform the appropriate adaptation and coding procedures in the vehicle to ensure full functionality of all systems cooperating with the engine computer.

Selection, Installation, and Additional Technical Support

Due to the complexity of electronic systems in modern Mercedes vehicles, selecting the correct engine computer should consider manufacturer designations, software versions, and hardware configurations. In practice, identification by VIN or part numbers is often used to avoid compatibility issues.

If you want to better understand how to safely choose used engine control units and other electronic modules, how to check hardware and software compatibility, and what to look for during installation, consult the guide: Used Automotive Electronics – Second-Hand ECU Modules and Sensors.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as auxiliary controllers, powertrain management modules, or additional control units, check the available parts in the category Mercedes Electronic Control Modules and Controllers.