Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine ECU Kit Key A6401501891

Mercedes W169 W245 A200 B200 CDI Engine Computer Set is a complete set from the Electronic Control Modules and Controllers group, designed for diesel engine vehicles. The set ensures consistent control of the Diesel engine unit, facilitating professional repair or replacement of the control system in Mercedes A-Class and B-Class vehicles.

Specifications and technical data

• SKU: A6401501891-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6401501891
• Substitutable numbers: A6401501891, A 640 150 18 91
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and Function of the Set

The presented engine computer set is a component of the engine management system for Mercedes W169 and W245 models in A200 CDI and B200 CDI versions. It is responsible for precise control of engine operating parameters, such as fuel injection quantity, injection timing, and cooperation with other electronic vehicle systems.

As it is a complete set from a single configuration, it helps maintain software and hardware consistency within the vehicle's electrical system, which is important for diagnostics, adaptation, and subsequent operation.

Benefits of Using an Original Mercedes Module

Using an original module from the Electronic Control Modules and Controllers group in Mercedes vehicles allows for the preservation of the powertrain's factory operating logic. This is particularly important in modern diesel engines, where the controller interacts with numerous subsystems – from the injection system, through safety systems, to comfort elements.

The main advantages of this solution include:

• maintaining compatibility with the vehicle's factory electrical architecture,
• easier diagnostics using service testers,
• stable cooperation with Diesel engine accessories,
• the ability to restore correct engine unit operating parameters after a previous controller failure.

Technical Characteristics in the Context of Diesel Engines

A control system designed for diesel engines requires appropriate configuration regarding injection pressure, turbocharging characteristics, and cooperation with exhaust emission control systems. The engine computer set for A200 CDI and B200 CDI versions is prepared to handle the specific operating parameters of the Diesel units used in these models, which translates to proper response to load, stable idle operation, and appropriate fuel consumption.

In practice, this means that after correct installation and configuration, it is possible to restore the engine's factory operating settings, without the need for universal solutions or adaptations from other models.

Condition, Selection, and Installation

The product comes from an operated vehicle, which is typical for automotive electronics available on the secondary market. This type of solution is often chosen for repairs where maintaining compatibility with the original installation and optimizing service costs are crucial.

Before purchasing, it is advisable to verify the set's compatibility with the specific vehicle equipment version, using the vehicle's identification data or manufacturer's markings. Correct selection facilitates subsequent adaptation in the vehicle and minimizes the risk of communication problems between modules.

Technical Support and Additional Information

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 controllers, comfort modules, or engine management systems, check the available parts in the Mercedes Electronic Control Modules and Controllers category.

For users who want to approach the purchase of used electronics consciously, a guide discussing the selection of used controllers, compatibility issues, and practical installation examples will be useful – you can find it in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.