Description
BMW F20 120d F30 320d F36 420d LCI B47 190HP Engine ECU Kit FEM + 2 Keys is a set from the Electronic control modules and ECUs category, designed for modern BMW diesel units with automatic transmissions. The kit enables a consistent replacement of powertrain control electronics while maintaining the integrity of security and comfort systems.
Specifications and technical data
- SKU: 8596362-6
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 8596362
- Substitutable numbers: 8596362, 0281033806, 0 281 033 806, 6843898, 61356843898
- Fuel type: Diesel
- Gearbox type: Automatic
- Category: ECUs & Computer Modules
Purpose and function of the ECU kit
The presented kit is dedicated to BMW 1 Series F20 120d, 3 Series F30 320d, and 4 Series F36 420d models in the LCI version with the 190HP B47 engine. The set includes the engine ECU, FEM module, and two keys, which allows for maintaining the consistency of the immobilizer, central locking, and vehicle starting systems.
Thanks to being tuned for the diesel unit and automatic transmission, the ECU works with factory torque management systems, traction control, and safety systems. Such a kit minimizes the risk of software matching issues and communication errors within the vehicle’s bus.
Benefits of using the complete FEM + ECU + keys kit
Using a complete electronic kit in BMW cars with the B47 engine brings a number of practical benefits:
- security system consistency due to matching the ECU, FEM module, and keys,
- easier adaptation in the vehicle compared to replacing individual components,
- maintaining compliance with BMW’s factory electronic architecture,
- possibility of restoring proper powertrain operation after an electronics failure.
In the case of modern BMW diesels, it is crucial that the engine ECU, body module, and keys are logically linked to each other. Such a kit significantly simplifies the service process and reduces the time required for configuration.
Technical characteristics in the context of diesel and automatic transmission
The kit has been developed with diesel units in mind, which is why the control logic takes into account the specific operation of a Diesel engine – managing injection, boost pressure, and component protection under high torque. At the same time, the configuration is prepared to work with an automatic transmission, which means proper communication with the transmission mechatronics and electronic stability control systems.
This combination allows for smooth information transfer between the engine ECU, transmission, and body module, which translates into stable powertrain operation, predictable gear shifts, and proper reactions to load.
Application in service practice
The ECU kit with the FEM module and keys will work particularly well in situations where there has been damage to the engine control electronics or problems with the immobilizer. The kit allows for:
- restoring the functionality of the starting system and engine control after a failure,
- reducing the need for deep programming of individual modules,
- maintaining configuration consistency within a single vehicle.
Due to the nature of electronic components, installation and configuration by a workshop with experience in BMW electronics and appropriate diagnostic tools are recommended. This allows for fully utilizing the kit’s potential and avoiding communication problems between modules.
Condition and origin of the component
The kit comes from a used vehicle, which is a typical solution for original BMW control modules. These types of components retain their factory operating characteristics and are frequently used in professional workshops when priority is given to compatibility with factory equipment and predictable powertrain behavior.
Related categories and technical materials
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 ECUs, body modules, or comfort units, check the available parts in the BMW electronic control modules and ECUs category.
For a better understanding of how original electronic modules affect the driving character and behavior of a premium class car, it is worth reading the blog article Audi and emotions in their purest form – how used modules and ECUs help maintain the brand’s DNA, which discusses the importance of factory electronic components in modern cars.






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