Mercedes W203 C200 Kompressor 163HP M271.940 Engine ECU Kit A2711539179 Key Lock

Mercedes W203 C200 Kompressor 163HP M271.940 Engine ECU Kit Key Lock is a specialized component from the Electronic control modules and controllers group, designed for precise management of the powertrain unit. The ECU has been engineered to maintain stable engine parameters, optimize combustion, and ensure proper cooperation with vehicle accessories. As such, it provides a solid foundation for the professional repair of the control system in your Mercedes.

Specifications and technical data

• SKU: A2711539179-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2711539179
• Substitutable numbers: A2711539179, A 271 153 91 79, 5WK90507, A2095451708, A 209 545 17 08
• Fuel type: Diesel
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented engine computer is dedicated to the supercharged powertrain in the Mercedes C-Class W203 generation, C200 K version with 163 HP. As a component in the Electronic control modules and controllers category, it is responsible for analyzing sensor signals, controlling fuel dosage, ignition timing, and communicating with other vehicle systems. A correctly selected ECU allows for the restoration of factory engine performance parameters and reduces the risk of error codes being stored in the system memory.

Compatibility with the powertrain

The computer has been configured to work with the engine and a manual transmission. This means that the control logic takes into account the characteristics of the engine and the specifics of power transmission in a manual gearbox. In practice, this translates into:

• consistent operation with factory engine accessories,
• proper communication with modules responsible for power transmission,
• stable operating parameters across the full load range.

By maintaining compatibility with the original vehicle configuration, the installation of the ECU is predictable in terms of diagnostics and service.

Technical characteristics and advantages of use

As an original Mercedes component, the engine computer is prepared to operate in the demanding environment of the engine bay, accounting for temperature fluctuations, humidity, and vibrations. Using the correct ECU allows you to:

• maintain proper engine refinement,
• minimize the risk of incorrect sensor readings,
• facilitate diagnostics using factory service tools.

The product comes from the secondary market, which enables an economical repair of the control system while maintaining a design consistent with the manufacturer's factory specifications.

Selection, installation, and practical aspects

Before installation, it is recommended to verify the compatibility of the ECU with the specific vehicle configuration, including the engine type, transmission, and additional equipment. In many cases, it is necessary to perform adaptation or programming using an appropriate diagnostic tester so that the computer is correctly paired with the immobilizer and other modules in the vehicle. A properly selected and configured ECU allows for the restoration of full powertrain functionality without the need for mechanical engine intervention.

Expanding the control system in your 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 control modules, auxiliary controllers, or electronic management units, check out the available parts in the Mercedes electronic control modules and controllers category.

To better plan the use of a pre-owned engine ECU and other electronic components, it is worth checking out practical tips regarding the selection and operation of such parts – detailed information can be found in the article The second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?.