BMW F36 LCI Petrol 420iX B48 Engine ECU Kit DME 8489449 Keys FEM Automatic

BMW F36 LCI Petrol 420iX B48 Engine ECU Kit DME Keys FEM Automatic is an advanced electronic set designed for the B48 petrol engine with an automatic transmission. Thanks to its factory configuration for a specific model, it ensures consistent powertrain operation, comfortable starting, and proper communication between all related vehicle systems.

Specifications and technical data

• SKU: 8489449-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8489449
• Substitutable numbers: 8489449, 12148740343, 8740343, 0261S19743, 0 261 S19 743, 61358781423, 8781423
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME kit

The presented set belongs to the Electronic control modules and ECUs category and is dedicated to the BMW 4 Series Gran Coupé F36 LCI, in the 420iX version with a B48 petrol engine and automatic transmission. The kit includes the DME engine control unit, the FEM module, and keys, which allows for maintaining the integrity of the immobilizer, starting system, and vehicle security features.

A set configured in this way is particularly useful when replacing a damaged controller, resolving communication issues within the vehicle network, or when it is necessary to restore proper powertrain operation after an electronics failure.

Benefits of using a complete kit

Using a complete BMW F36 LCI Petrol 420iX B48 Engine ECU Kit DME Keys FEM Automatic provides a number of practical benefits:

• Security system integrity – the engine controller, FEM module, and keys come from a single set, which facilitates integration with the immobilizer and comfort system.
• Reduced coding issues – complete electronics minimize the risk of software conflicts between individual modules.
• Tailored to the B48 petrol engine – the set is prepared to work with the petrol engine and automatic transmission, which is important for control logic and gear-shifting strategies.
• Can be used in the process of professional repair or modernization of the engine control system in specialized workshops.

Application in the BMW F36 LCI 420iX powertrain

In the BMW F36 LCI 420iX model with the B48 engine, the DME controller is responsible for precise management of the petrol unit's operation, including fuel injection, ignition, and cooperation with the automatic transmission. The FEM module integrates functions related to vehicle access, starting, and selected comfort systems, while the included keys allow for maintaining the consistency of the entire system.

Such a combination of components is particularly important in all-wheel-drive vehicles, where the engine controller works with other modules responsible for traction and stability, and proper communication between them affects the predictable behavior of the car.

Characteristics of the used product

The offered set comes from the category of used electronic control modules, which means it was previously operated in a vehicle. This type of solution is often chosen as an economical alternative to new components, especially in the case of complex electronic systems where the cost of brand-new parts is high.

Before installation, it is recommended to entrust the assembly and any necessary programming to a workshop with experience in BMW electronics and appropriate diagnostic tools, which will allow you to fully utilize the potential of the set and reduce the risk of communication errors between modules.

Support with selection and additional materials

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as engine controllers, comfort modules, or ECU units, check the available parts in the BMW electronic control modules and ECUs category.

When choosing a used BMW F36 LCI Petrol 420iX B48 Engine ECU Kit DME Keys FEM Automatic, it is worth reading practical tips regarding automotive electronics – you will find them in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which discusses key aspects of selecting and operating such components.

Additionally, to better verify component compatibility using OEM numbers and avoid mistakes when shopping online, you can use the advice contained in the material Online parts shopping without risk – 5 proven ways to verify component compatibility using OEM numbers and paint codes, prepared for BMW vehicle users.