Mercedes W204 C180 Kompressor 271.952 156HP Engine ECU Kit A2711504879 Keys Lock

Mercedes W204 C180 Kompressor 271.952 156HP Engine ECU Kit Keys Lock is a solution designed for vehicles with a gasoline engine and an automatic transmission. The set belongs to the Electronic control modules and ECUs group, which means it includes key components responsible for managing the powertrain operation and related security systems. It is a practical proposal for workshops and users who want to restore full functionality of the engine control system in their Mercedes.

Specifications and technical data

• SKU: A2711504879-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2711504879
• Substitutable numbers: A2711504879, A 271 150 48 79, A2710101847, A 271 010 18 47, A0044467540, A 004 446 75 40, 5WK90721, A2075450108, A 207 545 01 08, A2045458132, A 204 545 81 32, A6461509372
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The presented engine control unit kit is dedicated to the Mercedes C-Class W204 generation, C180 Kompressor version with 156 HP, featuring the 271.952 engine code. It includes the electronic engine control module along with matched immobilizer components – keys and lock – which facilitates installation and reduces the need for programming from scratch in the vehicle.

As an item from the Electronic control modules and ECUs category, the kit is responsible for:

• controlling gasoline engine operating parameters,
• cooperating with the automatic transmission in terms of data transmission,
• integrating with the vehicle's security system (immobilizer, key authorization),
• communicating with other modules in the vehicle network.

Benefits of using a complete kit

Using a complete ECU kit with keys and lock allows, in many cases, to avoid time-consuming adaptation of individual modules. Consistency of components in one package facilitates the work of an automotive electrician and reduces the risk of immobilizer synchronization issues.

The most important advantages of such a solution include:

• maintaining compatibility between the engine controller and the start-block system,
• reducing costs of additional programming and key coding,
• the possibility of faster diagnostics and vehicle startup after the original controller failure,
• easier verification of correct operation after installation.

For workshops specializing in the Mercedes brand, such a kit is a practical and effective service tool, allowing to shorten repair time and increase the predictability of the final result.

Compatibility and selection by numbers

The ECU kit has been developed for a specific gasoline engine variant working with an automatic transmission. In practice, this means that before installation, it is worth verifying compatibility with the vehicle based on the OEM part number and available interchangeable numbers in the technical specification. The presence of many reference numbers in the product data facilitates matching to a specific car configuration, while simultaneously allowing to avoid communication problems between modules.

When selecting an engine controller for a Mercedes, it is also crucial to check whether the vehicle is equipped with the appropriate type of transmission and whether the engine configuration matches the one for which the kit was prepared. This ensures proper ECU cooperation with other vehicle systems.

Condition, installation, and service recommendations

The product is offered as a used item, which in practice means it comes from disassembly and has been verified for suitability for further use. In the case of electronic control modules, correct installation is particularly important – it is recommended that the installation and any necessary adaptation be performed by a workshop with experience in working with Mercedes electronics.

Before installation, it is worth:

• checking the vehicle's electrical installation for any short circuits or damage,
• verifying the correctness of grounds and module power supply,
• performing computer diagnostics after installation to confirm ECU communication with other controllers.

Such an approach allows for fully utilizing the potential of the kit and ensuring stable operation of the powertrain after replacement.

Expansion of the control system in a Mercedes

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

For comparison with other premium brands and a better understanding of the role of original control modules in maintaining the vehicle's character, it is worth reading the article on our blog: Audi and pure emotions – how used modules and controllers help maintain the brand's DNA.