Mercedes R171 SLK 200 M271.944 163HP Engine Module ECU Kit A2711538579 Key Lock

Mercedes R171 SLK 200 M271.944 163HP Engine Module ECU Kit is a specialized module from the Electronic control modules and controllers category, designed for precise management of the powertrain in the SLK 200 model with the M271.944 engine. The controller works with the petrol fuel system and the automatic transmission, ensuring stable engine operation, appropriate dynamics, and correct communication with other vehicle systems.

Specifications and technical data

• SKU: A2711538579-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2711538579
• Substitutable numbers: A2711538579, A 271 153 85 79, A0014466902, A 001 446 69 02, 5WK90526
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented control computer is dedicated to the powertrain based on the M271.944 unit in the Mercedes SLK R171 generation. Its task is to process signals from sensors in real-time, control petrol injection, ignition, and cooperate with the automatic transmission to maintain proper engine operating parameters across the full load range.

The module is responsible for:

• coordinating engine operation with the petrol fuel system,
• integration with the automatic transmission system,
• communication with other controllers in the vehicle network,
• monitoring engine operating modes in terms of performance and economy.

Benefits of using an original Mercedes controller

Using an original controller in a Mercedes SLK 200 allows for maintaining the factory engine performance characteristics and proper cooperation with the vehicle's electronics. This is particularly important in the case of petrol units with an automatic transmission, where precise data exchange between modules affects the smoothness of gear changes and the overall refinement of the drivetrain.

Key advantages include, among others:

• compatibility with the vehicle's electrical architecture – the controller is designed for a specific model configuration,
• stable operation under typical operating conditions,
• possibility of diagnostics and adaptation using factory service tools,
• maintenance of proper combustion parameters and throttle response.

Application in a petrol system with an automatic transmission

In vehicles with a petrol engine and an automatic transmission, the engine controller acts as the central element managing the cooperation between both components. A properly selected module helps maintain:

• correct gear shift points depending on load and engine speed,
• consistent acceleration and engine braking characteristics,
• proper communication with safety and comfort systems.

Thanks to this, the driver receives predictable vehicle behavior, and the powertrain operates within the parameters specified by the manufacturer.

Product characteristics and condition

The offered controller belongs to the Electronic control modules and controllers group by Mercedes and is a component sourced from dismantling, in used condition. Such components are frequently chosen for vehicle repairs where compliance with the factory configuration and the ability to continue working in the original electronic environment are essential.

Before installation, it is recommended to perform a standard diagnostic procedure and – if necessary – carry out appropriate programming or adaptation of the controller to the specific vehicle, in accordance with service practices for Mercedes models.

Integration with other modules and service knowledge

Modern engine controllers, similar to modules used in other premium brands, require proper diagnostic and programming handling. For those interested in a broader context of how electronic modules work in premium cars, including engine controllers, an article describing a practical approach to repairs using dismantled parts may be useful – you can find it here: guide on handling iDrive systems and electronic modules in BMW.

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 other electronic control systems, check the available parts in the Electronic control modules and controllers Mercedes category.