BMW E87 E90 N46 120i 320i 150HP Engine Control ECU DME 7565300 Manual

BMW E87 E90 N46 120i 320i 150HP Engine Control ECU DME is a factory-original engine control unit designed for the N46 engine in the 3 Series E90 with a manual transmission. As a component from the Electronic control modules and controllers group, it is responsible for the precise management of engine operation, fuel injection, and communication with other vehicle systems. This is the ideal solution for users looking to restore the proper performance of their drivetrain while maintaining original BMW operating logic.

Specifications and technical data

• SKU: 7565300-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 12147565301, 7565301, 12147565300, 7565300, 0261201160, KZ
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The DME engine control unit in the BMW E90 320i N46 acts as the central unit managing the operating parameters of the four-cylinder petrol engine. It analyzes signals from sensors, controls fuel injection, ignition, and coordinates with safety and comfort systems. This ensures the engine maintains stable idle, proper throttle response, and predictable behavior under various road conditions. The controller is specifically calibrated for use with a manual transmission, which is crucial for ignition maps, fuel delivery, and gear-shift strategies. Using the correct DME for a specific drivetrain configuration minimizes the risk of errors, limp mode, and communication issues within the vehicle's bus system.

Benefits of using an original BMW module

Choosing an original controller from the Electronic control modules and controllers group ensures the preservation of factory driving characteristics typical of the BMW 3 Series. Proper matching to the N46 engine and manual transmission facilitates the adaptation and programming process in the vehicle, while also reducing the risk of incompatibility often associated with universal aftermarket replacements. The main advantages of this solution include:

• preservation of factory engine performance and throttle response characteristics,
• consistency with the existing electrical installation and CAN bus architecture in the BMW E90,
• compatibility with standard BMW service tools for diagnostics and coding,
• reduction of communication issues with other vehicle modules.

Condition, origin, and practical application

The offered DME engine control unit is a used component, meaning it has been removed from a vehicle and serves as a cost-effective alternative to a new part. Such modules are frequently used for repairs following electronic failures, water damage, power surges, or unsuccessful software tuning attempts. Before installation, please note the necessity of proper programming, VIN matching, and vehicle equipment configuration. A correctly selected and coded controller restores stable engine operation, eliminates DME-related communication errors, and recovers full drivetrain functionality.

Integration with other modules and service knowledge

The engine control unit in the BMW 3 Series interacts with many other electronic modules – from comfort systems and lighting modules to units responsible for safety. Therefore, when replacing the DME, it is important to understand the basic principles of coding, immobilizer adaptation, and synchronization with other controllers. If you want to better understand how to repair BMW engine controllers and other modules, such as the FRM or iDrive system, using salvaged parts, check out our article: Driving pleasure for years to come – how to maintain iDrive systems and electronic modules in BMW 3 and 5 Series models. It is a valuable source of knowledge for those planning DIY electronic repairs in their BMW. If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other components from the same group, such as controllers, engine management modules, or engine-related systems, check out the available parts in the BMW electronic control modules and controllers category.