BMW E91 320i N46 Engine Control Unit ECU 150HP 2.0 Petrol Automatic 7565300

BMW E91 320i N46 Engine Control Unit ECU 150HP 2.0 Petrol Automatic is an original electronic control module designed for the N46 petrol engine unit with an automatic transmission. This specialized ECU is responsible for precise engine management, ensuring stable power characteristics, correct fuel dosing, and seamless cooperation with the automatic transmission. Thanks to its factory origin from the BMW line, full compatibility with the vehicle's electrical architecture and software is maintained.

Specifications and technical data

• SKU: 7565300-22
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 12147565301, 12147565300, 12147568676, 0261201160, 7565301, 7565300, 12147561834, 7561834, 12147557290, 7557290, 12147552176, 7552176, 12147550534, 7550534, 12147545042, 7545042, 12147557930, 7557930, 7561891, 12147561891, 7550867, 12147550867, 7550857, 12147550857, 7568658, 12147568658, 7550869, 12147550869, 7568646, 12147568646, 4834203, 12144834203, 6943814, 61356943814, 6943797, 61356943797
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented control unit belongs to the Electronic control modules and controllers group and is dedicated to the BMW drivetrain with an N46 petrol engine and an automatic transmission. The ECU coordinates the operation of fuel injection, ignition, auxiliary systems, and communication with other modules in the vehicle, which translates into smooth acceleration, correct gear shifting, and stable operation of the unit across the entire rev range. A properly selected control unit is crucial for:

• maintaining correct engine operating parameters during daily use,
• ensuring compatibility with the vehicle's electrical installation and CAN network,
• proper cooperation with the automatic transmission,
• correct operation of OBD diagnostic systems.

Compatibility and reference numbers

The control unit was designed as an OEM BMW component, which means it has a dedicated part number and an extensive list of interchangeable numbers. As a result, it can be used as a replacement in various factory configurations, provided they match the manufacturer's numbering and the engine and transmission specifications. The presence of multiple reference numbers facilitates the selection of the correct ECU during repair or replacement and allows for the safe use of the controller in vehicles with a similar factory configuration. Before purchasing, it is recommended to compare the part number and interchangeable numbers with the vehicle data to ensure full hardware and software compatibility. This selection method minimizes the risk of communication problems between modules, engine operation errors, or the need for costly installation modifications.

Technical characteristics and application

The ECU is adapted to work with a petrol engine and an automatic transmission, which is significant for software configuration and control maps. The module manages, among other things, injection timing, ignition advance angle, idle speed control, and cooperation with safety and comfort systems. Combined with properly functioning sensors and electrical installation, it allows for maintaining stable operating parameters of the power unit, in accordance with BMW's factory specifications. Due to the advanced electronics and the link with the immobilizer and other modules, the installation of the control unit should be performed by a workshop with appropriate diagnostic facilities. In many cases, software matching (coding, adaptation) is necessary for the ECU to work correctly with a specific vehicle.

Condition, origin, and benefits of choosing a used ECU

The offered control unit comes from dismantling and is an original BMW component. Choosing a used ECU is a solution that allows for a significant reduction in repair costs compared to purchasing a new module, while maintaining factory hardware specifications. For many BMW 3 Series users, this is a reasonable compromise between price and quality, especially when the controller is selected based on matching part numbers and vehicle configuration. To better understand when it is worth opting for a used control module, how to assess its suitability, and what to pay attention to during installation, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?.

Expanding the control system in BMW

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as additional control modules, auxiliary controllers, or electronic management units, check the available parts in the BMW electronic control modules and controllers category. Additional tips regarding working with electronics in 3 and 5 Series models, including practical information about BMW engine control units, are also provided 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?.