BMW F30 F31 LCI F32 320iX B48 184HP Engine Control ECU Kit DME 8489449 Automatic

The BMW F30 F31 LCI F32 B48 184HP Automatic Transmission DME Engine Control Unit Kit is a complete, original module from the Electronic Control Units and Controllers group, designed for B48 gasoline engines with 184 HP working with an automatic transmission. This solution is created for precise engine control, stable communication with the vehicle's electrical system, and maintaining factory powertrain parameters.

Specifications and technical data

• SKU: 8489449-3
• 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
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

DME Kit Purpose and Function

The DME engine control unit in this kit is responsible for managing all key processes of the B48 engine's operation – from fuel delivery and ignition control to interaction with auxiliary components and safety systems. The version dedicated to automatic transmissions ensures proper data exchange with the transmission module, which translates into smooth gear changes, correct load strategies, and stable operation in various driving modes.

This solution is particularly important in LCI facelifted BMW F-series models, where the vehicle's electrical architecture requires consistency between the engine control unit, body electronics, and comfort systems.

Compatibility with B48 Engine and Automatic Transmission

The presented kit is designed to work with the 184 HP B48 gasoline engine used in BMW F30, F31 LCI, and F32 models. Integration with an automatic transmission allows for the preservation of factory torque control maps, kick-down logic, downshift strategies, and interaction with stability control systems.

In practice, this means that after correct selection for a specific vehicle and appropriate software adaptation, the DME kit enables the restoration of full powertrain functionality after a previous control unit failure or electrical system damage.

Characteristics of the Used OEM Module

The offered component comes from the original BMW production line, ensuring factory fit for the vehicle's electrical system and communication buses. As a used part, the DME kit offers a cost-effective solution while maintaining compliance with manufacturer requirements regarding construction, connectors, and hardware architecture.

Compared to non-original aftermarket replacements, an original engine control unit minimizes the risk of communication issues at the vehicle network level, coding errors, or incompatibility with diagnostic software used in BMW service centers.

Selection by OEM, Interchangeable Numbers, and Installation Aspects

Before purchasing, it is recommended to verify compatibility by OEM number, interchangeable numbers, and the engine and transmission configuration of the specific vehicle. Correct selection of the DME control unit is crucial to avoid problems with engine starting, the immobilizer, comfort systems, and communication with other electronic modules.

In most cases, installing such a kit requires programming, coding, or synchronization procedures with the immobilizer and keys. Therefore, installation in a specialized workshop with appropriate diagnostic software and experience in working with BMW F-series electronics is recommended.

Technical Support and Additional Materials

To better understand the specifics of used control modules, selection by OEM numbers, and safe installation principles, it is worth consulting the guide describing practical aspects of purchasing used automotive electronics: Used Automotive Electronics – Second-Hand ECU Modules and Sensors. The article discusses, among other things, hardware and software compatibility issues, which is particularly useful when planning a DME control unit replacement in a BMW.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as control modules, auxiliary controllers, or electronic management units, check the available parts in the BMW Electronic Control Units and Controllers category.