BMW 1 3 Series E87 E90 E91 118i 318i 120i 320i N46 ECU DME 7550534 Engine Control Unit

BMW 1 3 Series E87 E90 E91 118i 318i 120i 320i N46 ECU DME Engine Control Unit is an original electronic engine control module designed for selected BMW 1 and 3 Series models with the N46 engine. This factory DME controller ensures precise engine management, supporting stable performance, correct fuel dosing, and efficient communication with other vehicle systems. By using original electronics from the Electronic control modules and controllers category, you maintain the consistency of the powertrain with the vehicle's factory configuration.

Specifications and technical data

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

Purpose and function of the DME controller

The presented DME engine controller is dedicated to N46 petrol engines used in the BMW 1 Series E87 and 3 Series E90/E91 in 118i, 318i, 120i, and 320i versions. Its task is to comprehensively control the combustion process, including fuel injection control, ignition, and cooperation with sensors and components responsible for exhaust emissions. A properly selected ECU module is crucial for maintaining correct engine operating parameters, smooth throttle response, and stable idle speed.

The original controller from the DME family ensures compatibility with the factory wiring harness, CAN bus architecture, and other electronic modules in the vehicle. This minimizes the risk of communication errors, software incompatibility, and diagnostic issues.

Benefits of using an original BMW module

Using a factory engine controller instead of a damaged or unstable component allows you to restore the proper operation of the powertrain without interfering with the installation design. The most important advantages include:

• preserving the factory control maps and operating logic of the N46 unit,
• proper cooperation with safety and comfort systems,
• easier diagnostics using dedicated BMW service tools,
• reducing the risk of starting problems, engine stalling, or warning lights appearing.

For workshops and individual users, this means a more predictable repair process and the ability to maintain the consistency of the vehicle's configuration. By choosing an original module from the Electronic control modules and controllers group, you are opting for a solution consistent with the vehicle manufacturer's specifications.

Product characteristics and condition

The offered BMW engine controller comes from the brand's original production line, which translates into a proper fit for the specific generation of the N46 unit and compatibility with factory software. The item is marked as used, which in practice means it has been removed from a vehicle and may require standard adaptation or programming procedures for a specific car according to BMW service practice.

For proper installation, it is recommended to verify compatibility by the OEM part number and interchangeable numbers, as well as to consult an experienced automotive electrician or a service specializing in the BMW brand. This approach helps reduce the risk of hardware or software incompatibility and ensures the vehicle runs smoothly after replacing the controller.

Selection, compatibility, and installation aspects

When selecting a DME controller for a BMW with an N46 engine, it is crucial to check compatibility with the specific model version and vehicle year. In practice, the VIN, OEM part number, and a list of interchangeable numbers are used for this purpose, which facilitates matching the module to the existing installation. In many cases, it is also necessary to perform coding or synchronization procedures with the immobilizer and other modules in the vehicle.

To better understand the principles of selecting used engine controllers, the differences between hardware and software versions, and typical installation scenarios, it is worth checking out the practical Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. The article discusses, among other things, selection by VIN/OEM, HW/SW compatibility issues, and the most frequently asked questions related to the installation of used modules.

Expanding the control system in BMW

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 additional controllers, auxiliary modules, or controllers cooperating with the powertrain, check the available parts in the BMW electronic control modules and controllers category.

This approach allows you to build a coherent set of control electronics based on original BMW components, which facilitates diagnostics, servicing, and maintaining the vehicle in a configuration close to the factory one. For users who value the predictability of the powertrain's operation and the correct cooperation of all electronic modules, this is a particularly beneficial solution.