BMW E87 E90 120i 320i N46 150HP ECU Engine Control Unit DME 7552176 Automatic

BMW E87 E90 120i 320i N46 150HP ECU Engine Control Unit DME is a factory electronic control module designed for N46 series petrol engines with 150 HP. As a component from the Electronic control modules and ECUs category, it is responsible for precise engine management and cooperation with the automatic transmission, ensuring stable driving parameters and correct communication with other vehicle systems.

Specifications and technical data

• SKU: 7552176-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552176
• Substitutable numbers: Unit, 12147557291 0261208582, 7557291 0 261 208 582, 12147552177, 12147552176 12147550535 12147550534, 12147545043 12147545042 12147531846, 7552177, 7552176 7550535 7550534, 7545043 7545042 7531846
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the DME unit

The presented DME unit is dedicated to BMW 1 Series E87 and 3 Series E90 petrol engines in 120i and 320i versions with the 150 HP N46 engine. The module manages key engine operating parameters, such as fuel injection, ignition timing, and auxiliary equipment operation, and also interacts with safety and comfort systems, which translates into predictable vehicle behavior in various road conditions. Thanks to its factory architecture, the unit is optimized for communication with the vehicle's bus, which facilitates diagnostics, coding, and adaptation in the vehicle by a specialized service center.

Benefits of using an original BMW module

Using an original engine control unit instead of a damaged or unstable component allows for restoring the proper performance of the engine and correct cooperation with the automatic transmission. This is particularly important in the case of modern petrol systems, where electronics are responsible for most control processes. The main advantages of such a solution include:

• maintaining factory engine and automatic transmission performance characteristics,
• consistency with the existing electrical installation and onboard systems,
• possibility of correct programming and adaptation based on standard BMW service procedures,
• reducing the risk of communication errors in the vehicle network.

Technical characteristics and compatibility

The module belongs to the Electronic control modules and ECUs group, which means it is an integral part of the engine management system and requires a professional approach during installation and configuration. The unit works with the petrol fuel system and automatic transmission, which is why it is intended for specific drivetrain configurations in BMW E87 and E90 models. In practice, this means that before installation, it is worth verifying the module's compatibility with your vehicle in terms of engine version, transmission type, and electrical architecture. A correctly selected and programmed unit helps avoid starting problems, engine management errors, or improper cooperation with other electronic modules.

Condition and use in vehicle service

The offered unit is a used part, which makes it an attractive cost-effective alternative to new components, while maintaining the factory design and purpose. Such modules are often used in professional workshops specializing in the BMW brand to restore vehicle functionality after engine electronics failures. Before installation, it is recommended to perform a full vehicle diagnostic and plan programming procedures and potential matching to the immobilizer and other systems. This allows the unit to be integrated into the existing vehicle architecture in a controlled and predictable manner.

Expanding knowledge and selecting BMW electronics

If you want to better understand how to take care of electronic systems in your BMW, including the engine control unit, comfort modules, or the iDrive system, it is worth checking out the guide on our blog: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?. The article discusses a practical approach to diagnostics and the use of proven parts from dismantling. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as engine controllers, DME modules, or other electronic control units, check out the available parts in the BMW electronic control modules and ECUs category.