Mercedes W204 W212 W221 AMG Fuel Pump Module Control Unit ECU A0355400445

Mercedes W204 W212 W221 AMG Fuel Pump Module Control Unit ECU is a specialized component from the Electronic control modules and controllers category, designed for gasoline fuel systems in high-end Mercedes models. It is responsible for precise control of the fuel pump operation, fuel rail pressure stabilization, and safe power supply to the engine unit under various load conditions. This is a solution for users who expect efficient, predictable fuel system performance in high-performance AMG vehicles.

Specifications and technical data

• SKU: A0355400445
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0355400445
• Substitutable numbers: A0355400445, A 035 540 04 45
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Function of the fuel pump control module

The presented controller acts as an intermediary element between the engine control unit and the fuel pump, regulating its output according to current demand. As a result, the gasoline fuel system maintains the correct operating pressure, which translates into stable engine performance, proper throttle response, and a reduced risk of lean or rich fuel mixtures. In Mercedes W204, W212, and W221 class vehicles with the AMG package, this is particularly important due to higher thermal and mechanical loads.

Benefits of using an original controller

Using a dedicated fuel pump control module in Mercedes vehicles ensures:

• consistency with the factory engine ECU software,
• proper regulation of pump output across the entire RPM range,
• reduced risk of fuel pump overheating due to controlled operation,
• stable fuel supply during dynamic driving characteristic of AMG versions.

For the user, this means more predictable vehicle behavior, fewer starting irregularities, and lower susceptibility to power drops resulting from fuel pressure issues. A properly selected controller also helps reduce the occurrence of diagnostic trouble codes related to the fuel system.

Application in Mercedes W204, W212, W221 AMG class vehicles

The module has been designed to work with gasoline engines in mid-size and high-end Mercedes models, including AMG variants. The controller's design takes into account the specifics of these vehicles – higher fuel demand, frequent high-load driving, and requirements for smooth power delivery. Thanks to this, the component fits well with the character of sports-oriented cars, where stable fuel supply is crucial for maintaining performance.

Condition, verification, and selection by part numbers

The offered module comes from dismantling and is a used part, which allows for reduced repair costs while maintaining factory performance characteristics. Before installation, a standard diagnostic procedure of the electrical system and fuel system is recommended to rule out other sources of faults. It is worth basing the selection of the appropriate controller on the OEM number and interchangeable numbers assigned to a specific vehicle configuration, as well as the vehicle's identification data.

If you want to check step-by-step how to properly match components from the controller and module group by OEM number and vehicle data, the following guide will be helpful: how to choose the right car part by VIN and OEM number. You will find practical tips there that will facilitate compatibility verification before purchase.

Integration with other electronic modules

The fuel pump control module works with other controllers present in modern vehicles, creating a coherent engine management system. In the case of premium class cars, such as Mercedes or BMW, the proper functioning of the entire module network has a direct impact on driving comfort, safety, and component durability. It is worth familiarizing yourself with the broader context of automotive electronics operation by using the material describing a practical approach to repairing modules in premium segment cars: how to take care of iDrive systems and electronic modules using parts from dismantling.

If you are planning a comprehensive repair or upgrade of the fuel control area in your Mercedes and need other components from the same group, such as engine controllers, comfort modules, or other ECU units, check the available parts in the Electronic control modules and controllers Mercedes category.