BMW E87 E90 E91 120i 320i N46 Engine Control Unit ECU DME 7565300 Manual

BMW E87 E90 120i 320i N46 Engine Control Unit ECU DME is an original module from the Electronic control modules and controllers group, designed for use with the N46 engine unit in 1 and 3 series models with a manual transmission. The controller is responsible for precise engine management, ensuring stable power characteristics, correct fuel delivery, and consistent operation of other BMW electronic systems.

Specifications and technical data

• SKU: 7565300-14
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 12147565300, 7565300, 12147565301, 7565301, 0261201160
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The presented DME controller is dedicated to the N46 engine in BMW 1 Series E87 and 3 Series E90 models in 120i and 320i petrol versions. As the central unit managing engine operation, the module oversees, among other things, injection timing, ignition advance angle, auxiliary equipment operation, and communication with other controllers in the vehicle. This ensures consistent drivetrain performance, which translates into predictable throttle response, engine refinement, and compliance with factory control maps.

Compatibility with manual transmission

The controller has been configured for use with a manual transmission, which is important when selecting the appropriate module for a specific vehicle configuration. DME versions for manual transmissions differ in software and operating logic from variants for automatic transmissions, which is why using the correct controller is crucial for the proper functioning of features such as idle speed control, clutch engagement response, or interaction with stability control systems.

Benefits of using an original BMW controller

Choosing an original BMW engine controller from this series allows you to maintain the factory performance characteristics of the powertrain and full compatibility with the vehicle's electrical system. The module from the Electronic control modules and controllers group is designed for specific models and configurations, which minimizes the risk of CAN bus communication issues, diagnostic errors, or malfunctions of onboard features. This is a particularly beneficial solution for professional repairs or restoring the car's original parameters after a failure of the previous controller.

Use in service and diagnostics

This type of DME controller works well with factory BMW diagnostic tools, which facilitates coding, adaptations, and verification of correct operation after installation. For workshops specializing in the BMW brand, this is a practical solution when replacing a damaged module, restoring the efficiency of the injection system, or resolving issues with starting and unstable engine operation. A used controller can also serve as a base for further configuration for a specific vehicle, in accordance with the manufacturer's procedures.

Condition and origin of the module

The offered controller comes from dismantling and is a used item, which provides an attractive cost alternative to new components while maintaining the original BMW specification. This type of solution is often chosen by both workshops and individual users who want to restore full functionality to the engine control system without interfering with the vehicle's factory parameters. 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 DME controllers, engine management modules, or other ECU units, check the available parts in the BMW electronic control modules and controllers category. For users who want to deepen their knowledge on repairing control modules for this brand, a guide describing a practical approach to regeneration and replacement of controllers in the 3 and 5 series will be useful – details can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?. If you are considering wider use of used electronics in your car and want to better understand the principles of selecting ECU modules, their compatibility, and best installation practices, it is also worth reading the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.