Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340

The Mercedes W245 B150 CDI OM266.920 Engine Control Unit ECU is an original electronic control module designed for precise management of the powertrain. As part of the Electronic Control Modules and Units group, it is responsible for monitoring engine parameters, communicating with other vehicle systems, and ensuring stable powertrain operation. This solution is for users who want to restore their car's proper functionality while maintaining the factory control logic.

Specifications and technical data

• SKU: A0014460340
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0014460340
• Substitutable numbers: A0014460340, A 001 446 03 40, A2661534879, A 266 153 48 79, 5WK90922
• Category: ECUs & Computer Modules

Purpose and Function of the Control Unit

The presented engine control unit is dedicated to Mercedes B-Class W245 models with the B150 CDI OM266.920 diesel engine. Its task is to continuously process signals from sensors, control fuel injection, air dosing, and cooperate with other electronic systems of the vehicle. This ensures the engine maintains stable RPMs, proper running smoothness, and predictable throttle response.

The ECU module monitors, among other things, the starting process, idle operation, and the powertrain's load under various driving conditions. A correctly selected control unit ensures software consistency with the car's electrical architecture, which is important for both reliability and service diagnostics.

Benefits of Using an Original Mercedes Module

Using an original control unit in the Mercedes W245 ensures:

• maintenance of factory engine control maps and auxiliary system operating logic,
• proper cooperation with the electrical system and other modules in the vehicle,
• easier diagnostics using professional service testers,
• consistency with the software intended for the specific car configuration.

For the user, this means more predictable vehicle behavior, reduced risk of communication errors between modules, and efficient serviceability. In the case of replacing a damaged ECU with an original part from the same family, the adaptation and programming process is usually simpler and more predictable.

Product Condition and Practical Application

The offered control unit is a used product, which in practice means it comes from a dismantled vehicle and has been previously operated. This type of part is an attractive alternative to new modules, especially for older car generations where the cost of a brand-new ECU can be high. With proper selection and correct installation, a used control unit can effectively restore the engine control system's functionality.

Before installation, it is necessary to consider the need for module adaptation to the specific vehicle – in many cases, adaptation, coding, or immobilizer data transfer is required. Therefore, it is advisable to entrust the installation to a workshop experienced with Mercedes electronics and equipped with the appropriate diagnostic tools.

Control Unit Selection and Compatibility

To correctly select this engine control unit for your car, pay attention to compatibility with the W245 model, the B150 CDI OM266.920 engine version, and the family of control units used. The module has an assigned OEM part number and related interchangeable numbers, which facilitates verification of compatibility with your specific vehicle configuration. If in doubt, it is advisable to compare the markings with the currently installed control unit or consult a service specializing in the Mercedes brand.

If you are also interested in other vehicle electronics components, you can check our offer in the section for used parts for sporty cars, where you will find inspiration for upgrading and servicing premium segment vehicles.

Knowledge and Practice – How to Approach ECUs

When working with control modules, it is crucial to understand the importance of electronic consistency throughout the entire vehicle. It is worth familiarizing yourself with best practices regarding diagnostics, programming, and the use of parts from dismantled vehicles. Extended information on this topic can be found in the article on servicing multimedia systems and engine control units using proven electronic modules, which demonstrates how to safely use used components in modern cars.