Mercedes-Benz W204 C220CDI Diesel Engine Control Unit Module ECU A6461502072

Mercedes-Benz W204 C220CDI Diesel Engine Control Unit Module ECU is a specialized component from the Electronic control modules and controllers group, designed for the precise management of a diesel engine. The controller is responsible for monitoring key diesel engine parameters, ensuring stable operation, proper fuel metering, and safe integration with other vehicle systems.

Specifications and technical data

• SKU: A6461502072
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6461502072
• Substitutable numbers: A6461502072, A 646 150 20 72, A0054461840, A 005 446 18 40
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented control unit is dedicated to Diesel powertrains in Mercedes W204 CDI models. Its task is to continuously analyze signals from sensors, control fuel injection, regulate engine accessories, and oversee the safety of the power unit. This allows the vehicle to maintain proper operating refinement, predictable throttle response, and optimized fuel consumption.

The electronic engine controller works with the vehicle's factory wiring, integrating with diagnostic systems and security features. It is a key module for the proper operation of the injection system, exhaust emission control, and protection of the engine against abnormal operating conditions.

Benefits of using an original module

Using an original controller in a Mercedes W204 CDI allows for maintaining consistency with the vehicle's factory electronic architecture. Proper software and hardware matching translate into:

• stable engine operation across the entire rev range,
• proper cooperation with the diesel injection system,
• correct operation of onboard systems linked to the power unit,
• easier computer diagnostics and error reading.

For the user, this means predictable vehicle behavior, reduced risk of incompatibility, and the possibility of professional service using standard manufacturer procedures.

Product characteristics and condition

The offered engine control unit belongs to the Electronic control modules and controllers group by Mercedes. The product is in used condition, which in practice means it comes from disassembly and was previously operated in a vehicle. Such components are a popular choice as an economical solution for engine control system repairs, allowing for reduced service costs while maintaining original hardware specifications.

Before installation, it is recommended to verify compatibility with the specific engine version and vehicle configuration, as well as to prepare for adaptation or programming in accordance with procedures used by services specializing in Mercedes electronics.

Application in Diesel engines

The controller has been designed to work with Diesel power units, which means it is adapted to the specifics of high-pressure injection, torque characteristics, and exhaust emission requirements in diesel engines. Appropriate control maps and algorithms allow for maintaining proper operating parameters, which is important for both the durability of the unit and the comfort of vehicle use.

Related components and further knowledge

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

To expand your knowledge about the role of original electronic modules in modern premium cars and the impact of used components on maintaining the brand's character, it is worth reading the blog article Audi and emotions in their purest form – how used parts help maintain the brand's DNA, which discusses practical aspects of selecting and installing factory controllers and other electronic components.