Mercedes S203 C180 143HP Kompressor M271.946 Engine ECU A2711532291 Automatic

The Mercedes S203 C180 Kompressor M271.946 Engine Control Unit is a specialized electronic module designed for a supercharged gasoline engine, working in conjunction with an automatic transmission. This solution is for users who expect precise engine control, stable communication with other vehicle systems, and the preservation of factory powertrain parameters.

Specifications and technical data

• SKU: A2711532291-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2711532291
• Substitutable numbers: A2711532291, A 271 153 22 91, A0014466902, A 001 446 69 02, 5WK90538, A2095451908, A 209 545 19 08
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Intended Use and Function of the Control Unit

The presented module belongs to the group of Electronic Control Modules and Units and is responsible for managing key engine operating parameters in the Mercedes C-Class S203 model with the M271.946 C180 Kompressor engine. It controls, among other things, the combustion process, cooperation with the supercharging system, and communication with the automatic transmission, which translates into smooth power delivery characteristics and proper response to load.

Thanks to dedicated software, the control unit is optimized for gasoline engines, ensuring appropriate injection and ignition maps, and correct cooperation with the vehicle's safety and comfort systems.

Compatibility and Reference Numbers

The unit has been designed for a specific engine and transmission variant, which facilitates part selection during powertrain repairs. The control unit has an assigned OEM number and a set of interchangeable numbers that allow you to verify compatibility with your vehicle and existing electrical system.

Before purchasing, it is advisable to compare the designations with the currently installed module to ensure full compatibility with the wiring harness, sensors, and other control units in the car.

Technical Characteristics and Application

The control unit works with an engine powered by gasoline, which is important for configuring the injection and ignition systems. It has also been adapted to work with an automatic transmission, allowing it to handle gear shifting strategies, torque control, and communication with the transmission module.

This adaptation to a specific powertrain configuration helps maintain the consistent operation of the entire system, reduce diagnostic errors, and ensure stable performance both in daily use and under heavy loads.

Condition, Origin, and Benefits of Installation

The offered control unit is a used component, which significantly reduces repair costs compared to purchasing a brand-new module, while maintaining the original manufacturer's specifications. Choosing an original control unit from the aftermarket is a particularly beneficial solution for repairing older generation powertrains, where both hardware compatibility and service economics are important.

After correct matching and potential adaptation in the vehicle, the control unit enables the restoration of proper engine operation, reduction of errors stored in the system memory, and stable functioning of the automatic transmission.

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 engine management units, check the available parts in the Mercedes Electronic Control Modules and Units category.

To better understand how original electronic modules influence the character and behavior of premium cars, it is worth reading an article describing the role of factory components in maintaining driving characteristics – details can be found in the material Audi and Emotion in its Purest Form. How Used Parts Help Maintain the Brand's DNA?.