BMW E90 E91 E92 LCI N55 306HP Engine Control Module ECU DME 7629130 Automatic

BMW E90 E91 E92 LCI N55 306HP Engine Control Module ECU DME is an advanced electronic control module designed for the 306 HP N55 engine unit in LCI (facelift) versions of the 3 Series. This component from the Electronic control modules and controllers category is responsible for precise engine management, ensuring stable power characteristics, correct throttle response, and consistency with BMW's factory electrical architecture.

Specifications and technical data

• SKU: 7619981
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7619981
• Substitutable numbers: 7619981, 12147619981, 8618483, 12148618483, 7645283, 12147645283, 7610272, 12147610272, 7629130, 12147629130, 7626776, 12147626776, 7614754, 12147614754, 7629609, 12147629609, 0261S06727, 0 261 S06 727
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The DME engine controller used in facelifted BMW 3 Series E90, E91, and E92 models is the central element of the N55 unit management system. It controls, among other things, fuel injection, ignition timing, and interaction with engine peripherals to maintain factory performance characteristics and smooth operation. As a result, the vehicle maintains proper operating parameters, and the response to load remains predictable and consistent with the manufacturer's specifications.

Compatibility with automatic transmission

The presented controller is configured to work with an automatic transmission, which is crucial for proper communication between the engine and the gearbox. Properly selected maps and control logic allow for:

• smooth gear shifting under various loads,
• maintaining stable RPM during starting and acceleration,
• consistent cooperation with the vehicle's comfort and safety systems.

Thanks to this, the DME module is the right choice when replacing the controller in BMW units equipped with an automatic transmission, without the need to adapt solutions intended for other configurations.

Technical characteristics and interchangeability group

The offered controller belongs to the Electronic control modules and controllers group, meaning it is a component directly responsible for communication within the vehicle network and the execution of engine control strategies. The module has a dedicated OEM part number and an assigned group of interchangeable numbers, which facilitates the selection of the appropriate variant for a specific car configuration. The presence of reference numbers allows for verification of compatibility with a given equipment version, model year, and engine type.

Before purchasing, it is recommended to compare the markings in the technical specification with the vehicle data to ensure full compatibility with the electrical installation and other controllers in the car.

Condition, application, and benefits of installation

The module is offered as a used BMW engine controller, which allows for an economical repair of the control system while maintaining the original design and operating logic. Replacing a damaged DME with a functional unit from the same family enables:

• restoration of proper starting and stable idle speed,
• elimination of errors related to engine controller communication,
• preservation of the factory operating characteristics of the N55 unit.

In many cases, such a module serves as a basis for further diagnostics or adaptation in the vehicle, in accordance with BMW service procedures.

Expansion of the control system and selection of other modules

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, comfort modules, or auxiliary system management units, check the available parts in the BMW electronic control modules and controllers category.

For users interested in a broader perspective on the role of original control modules in maintaining the character of a premium brand, the article describing how properly selected components affect the driving and functional properties of the vehicle may be helpful – more information can be found in the material Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.

If you are considering using used components also in the context of performance modifications or optimizing operating costs, it is worth reading the guide on safe tuning using aftermarket parts, available in the article Tuning with used parts – how to gain performance without spending a fortune.