BMW E90 LCI 330d N57 245HP ECU Engine Control Unit DME Automatic Gearbox

BMW E90 LCI 330d N57 245HP ECU Engine Control Unit DME Automatic Transmission is an original electronic control module designed for facelifted BMW 3 Series diesel units, compatible with automatic transmissions. This specialized DME controller is responsible for precise engine management, ensuring stable power characteristics, correct fuel delivery, and seamless operation with the automatic gearbox. Choosing a factory engine computer is key to maintaining proper powertrain operation and minimizing diagnostic issues.

Specifications and technical data

• SKU: 8507136
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8507136
• Substitutable numbers: 8507136, 13618507136, 8510221, 13618510221, 8506086, 13618506086, 8506377, 13618506377, 7823973, 13617823973, 7823513, 13617823513, 8506444, 13618506444
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and Function of the BMW Engine Controller

The presented controller belongs to the Electronic Control Modules and Controllers group and is designed to work with the N57 diesel engine producing 245 HP in the BMW E90 LCI 330d model. As the central unit managing engine operation, the ECU controls, among other things, the fuel injection process, boost parameters, accessory operation, and communication with other modules in the vehicle, which translates to proper dynamics, smooth running, and operational safety.

The version designed for automatic transmissions is adapted to specific cooperation algorithms with the gearbox, which is important for smooth gear changes, throttle response, and correct operation of driving modes. Using the appropriate type of controller minimizes the risk of communication errors between modules and facilitates subsequent diagnostics.

Benefits of Using an Original ECU DME

Selecting the correct engine computer for the BMW E90 LCI 330d with the N57 engine and automatic transmission allows for maintaining the factory operating parameters of the powertrain. A properly selected controller:

• supports stable engine starting and smooth idle operation,
• enables proper cooperation with safety and comfort systems,
• reduces the occurrence of errors related to software incompatibility,
• facilitates diagnostic work using factory service tools.

For workshops and users, this means a more predictable repair process, shorter configuration times, and a higher chance of restoring full vehicle functionality without additional complications. For engine controllers, it is particularly important that they come from the same design family and are compatible with the specific equipment version.

Technical Characteristics and Compatibility

The offered ECU is designed for a Diesel fuel engine and works with an automatic transmission. This configuration is important when selecting a controller, as different variants of N57 units and different gearbox types require different maps and control logic. Proper matching of the module to the specific drive version is crucial to avoid problems with adaptation, coding, and vehicle bus communication.

The product comes from the original BMW solutions range and is a component intended for reinstallation after appropriate preparation and configuration in the vehicle. In practice, this means it can be used as a replacement for a damaged controller in cars equipped with the N57 245 HP engine and automatic transmission, provided programming and adaptation procedures to the specific vehicle are followed.

Condition, Origin, and Practical Service Application

The module comes from the secondary market and is a used component, which for BMW engine controllers often represents a cost-effective solution while maintaining appropriate quality. This type of ECU is frequently used by specialized workshops dealing with automotive electronics, injection system repairs, and diagnostics of BMW 3 Series vehicles with diesel engines.

Before installation, it is recommended to perform standard service procedures, such as verifying compatibility, preparing for programming, and adapting to the immobilizer and other vehicle modules. A correctly selected and configured controller allows for restoring full powertrain functionality after a factory ECU failure, without the need for costly replacement with a new part.

Related Electronic Modules and Service Knowledge

When working on BMW electronics – especially engine controllers, comfort modules, or the iDrive system – it is advisable to use reliable sources of knowledge. Practical tips for repairing controllers, FRM modules, and multimedia systems in BMW 3 and 5 Series models can be found in the article: Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models.

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 engine controllers, powertrain management modules, or electronic systems cooperating with the drive, check the available parts in the category BMW Electronic Control Modules and Controllers.