Mercedes W169 W245 180 CDI OM640.940 109HP Engine ECU Kit A6409004900 Automatic

Mercedes W169 W245 180 CDI OM640.940 109HP Engine ECU Kit is a specialized set from the Electronic control modules and controllers category, designed for precise management of the powertrain. This solution was created to maintain the correct operating parameters of the diesel engine and ensure proper cooperation with the automatic transmission.

Specifications and technical data

• SKU: A6409004900-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6409004900
• Substitutable numbers: A6409004900, A 640 900 49 00, 0281018018, 0 281 018 018, A1699051500, A 169 905 15 00
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the kit

The presented engine ECU kit is dedicated to the Mercedes A-Class W169 model with the 180 CDI OM640.940 109HP engine. Its task is to control key processes of the diesel engine, such as fuel dosing, compression ignition control, cooperation with safety systems, and communication with other controllers in the vehicle. As an element from the Electronic control modules and controllers category, the kit is responsible for the consistency of the entire powertrain, ensuring the correct response to sensor signals and proper data exchange with the automatic transmission.

Compatibility with diesel engine and automatic transmission

The product is intended for vehicles with a compression-ignition engine, which means its software and configuration are adapted to the characteristics of a diesel unit. This makes it possible to maintain the appropriate combustion parameters, torque, and refinement typical of diesel engines. Another significant advantage is its adaptation to vehicles equipped with an automatic transmission. The controller works with the transmission module, which allows for:

• proper synchronization of gear shifts with engine load,
• maintaining the smoothness of the powertrain,
• consistent operation of driver assistance systems.

Service application and benefits of installation

The engine ECU kit is particularly useful in situations where the existing controller has suffered electronic damage, there are communication problems in the vehicle's network, or there are difficulties with starting and the stability of the powertrain. Replacing it with a properly selected kit allows you to restore the correct operation of the control system without the need for mechanical engine intervention. The main advantages of installation include:

• the ability to restore factory engine operating parameters,
• maintaining compatibility with the vehicle's existing electrical installation,
• reducing the risk of communication errors between modules.

Product characteristics and condition

The offered kit is a used item, which in practice means an attractive cost-to-functionality ratio while maintaining the original control specifications characteristic of the Mercedes brand. This type of solution is particularly beneficial for the repair of daily-driven vehicles, where both proper operation and rational service costs are important. Thanks to the preservation of the original control architecture, the kit allows for maintaining the consistency of electronic systems, which is important for the stability of the diesel engine and the automatic transmission cooperating with it.

Expanding the control system in a Mercedes

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 controllers, engine management modules, or electronic units cooperating with the powertrain, check out the available parts in the Mercedes electronic control modules and controllers category.

Selection support and technical knowledge

Selecting the right controller for a specific vehicle configuration requires taking into account parameters such as fuel type, transmission type, and the specifics of the powertrain. To better understand the importance of original electronic modules in premium brand cars and the impact of used components on maintaining the vehicle's character, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?. If you care about precisely matching a used engine controller to a specific Mercedes unit using the VIN number and want to reduce the risk of an incorrect purchase, the guide How to select original used parts for BMW, Audi, and Mercedes using the VIN number? will be helpful, as it discusses practical rules for selecting electronic components for premium cars.