BMW 1 3 Series E81 E87 E90 LCI 118d 318d N47 Diesel ECU Kit DDE CAS3 Key 7823422

BMW 1 3 Series E81 E87 E90 LCI 118d 318d N47 Diesel ECU Kit DDE CAS3 Key is a factory-original electronic control unit designed for N47 diesel engines, used in facelifted compact and mid-size BMW 1 and 3 Series models. As part of the Electronic control modules and controllers category, it is responsible for precise management of diesel engine operation, injection parameters, and communication with other vehicle systems. A used controller of this type is a reasonable solution for professional repair or replacement of a faulty ECU in BMW vehicles with an N47 engine.

Specifications and technical data

• SKU: 7823422-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7823422
• Substitutable numbers: 13618506375, 8506375, 13618518167, 8518167, 13618510592 13618506433 13617823423 13617823422, 8510592 8506433 7823423 7823422, 13618506434 13618512499 13617812540, 8506434 8512499 7812540, 13618577664, 8577664, 61359147226, 9147226, 0281014573
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and function of the N47 engine controller

The presented module is a computer controlling the operation of the diesel engine in BMW E87 and E90 LCI models equipped with the N47 unit. It is responsible for:

• controlling the fuel injection process in the diesel engine,
• managing engine operating parameters under various load conditions,
• cooperating with safety and comfort systems via communication buses,
• monitoring sensors and responding to deviations from set values. Thanks to this, the controller ensures stable, predictable, and economical engine operation, as well as proper cooperation with the vehicle's other electronic systems.

Benefits of using an original BMW module

Using an original control module in the N47 engine allows for maintaining the factory operating characteristics of the powertrain. Software and hardware architecture are tailored to the specifics of the BMW diesel engine, which facilitates adaptation and coding in the vehicle. In practice, this means:

• consistency with the existing electrical installation and controller network,
• proper support for diagnostic functions via a service tester,
• the possibility of professional configuration for a specific vehicle. A used module with preserved functionality is often chosen as a technically effective solution for ECU failure, especially in vehicles used intensively.

Technical characteristics in the context of a diesel engine

The controller has been designed to work with a powertrain powered by Diesel fuel. This means a design adapted to the specifics of a high-pressure injection system, advanced control maps, and exhaust emission control algorithms typical for BMW diesel engines. The module:

• supports multi-phase fuel injection characteristic of modern diesels,
• manages the operation of actuators in the intake and exhaust system,
• cooperates with sensors responsible for combustion and emission control. Such a configuration allows for maintaining appropriate dynamics, refinement, and compliance with the emission standards required for a given generation of the N47 engine.

Condition, installation, and service aspects

The offered module is a used item, which in practice means that before installation, standard service procedures should be anticipated, such as matching, coding, or potential programming for a specific vehicle. Replacing the engine computer in a BMW with an N47 unit should be carried out by a workshop with appropriate diagnostic facilities in order to:

• properly synchronize the controller with the immobilizer and other modules,
• verify communication in the vehicle network after installation,
• check for the absence of errors in the fault memory after adaptation. Such an approach minimizes the risk of operational problems and ensures stable operation of the powertrain after ECU replacement.

BMW electronic control modules and controllers – expansion and selection

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as engine controllers, powertrain management modules, or other computers responsible for controlling operating parameters, check the available parts in the BMW electronic control modules and controllers category. When selecting a used engine controller, it is worth knowing the specifics of BMW electronics and the principles of safe ECU replacement. Practical tips on when it is worth reaching for a used module and how to assess its suitability can be found in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.