BMW E60 LCI E90 E91 325d 525d M57N2 ECU Engine Control Unit DDE 7805288 Manual

BMW E60 LCI E90 E91 325d 525d M57N2 ECU Engine Control Unit DDE Manual is an original electronic engine control unit designed for M57N2 diesel engines in facelifted BMW 3 and 5 series models. As a part of the Electronic control modules and controllers group, it is responsible for precise engine management, fuel delivery, and communication with other vehicle systems. This is a solution for users looking for a proven DDE ECU module compatible with a manual transmission.

Specifications and technical data

• SKU: 7805288-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805288
• Substitutable numbers: 13617809941, 7809941, 13618509034, 8509034, 13617811151 13617806380 13617806987 13617806152, 7811151 7806380 7806987 7806152, 13618506951 13617805288 13617808314 13617804845, 8506951 7805288 7808314 7804845, 61356943834 6943834, 0281012994, 0 281 012 994
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DDE controller

The presented DDE engine controller is designed to work with the M57N2 unit in BMW E60 LCI models as well as E90/E91 325d and 525d versions. It is responsible for key engine management processes, such as injection control, monitoring operating parameters, and communication with other electronic modules in the vehicle. This ensures stable engine performance and proper operation of onboard systems.

Compatibility and interchangeable numbers

The controller belongs to the Electronic control modules and controllers group and has a dedicated OEM part number and a set of interchangeable numbers, which facilitates the selection of the appropriate module for a specific vehicle configuration. The presence of multiple reference numbers allows the controller to be used in various equipment variants and model years while maintaining hardware and software compatibility. Before purchasing, it is worth verifying compatibility by OEM or reference number and ECU markings to ensure proper integration with the vehicle's electrical system.

Manual transmission compatibility

The DDE module is configured to work with a manual transmission, which is significant for torque control logic, safety functions, and communication with other controllers. Proper transmission type matching minimizes the risk of errors, starting issues, or incorrect drivetrain responses. This is particularly important when replacing a controller in vehicles that previously used a module with a different configuration.

Condition, origin, and service application

The offered controller is a used item, making it an attractive cost-effective solution for repairs and diagnostics of the engine control system. It can be used both as a replacement module and as a test unit in workshops specializing in BMW electronics. In workshop practice, such a controller is often used in cases of original ECU damage, bus communication problems, or errors related to power supply and injection control.

Installation recommendations and technical support

Due to its advanced electronic design, the installation and configuration of the DDE controller should be entrusted to a specialized service center that has the appropriate diagnostic software and experience in adapting BMW ECU modules. In many cases, software matching, synchronization with the immobilizer, and configuration for specific vehicle specifications are required. Detailed tips on selecting used modules and sensors, including HW/SW compatibility rules and working with OEM numbers, can be found in the Global Parts guide: Used automotive electronics on board – why choose second-hand ECU modules and sensors?.

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