BMW E60 E90 E91 N52 323i 523i 177HP Engine Control ECU DME 7555361 Automatic

BMW E60 E90 E91 N52 323i 523i Engine Control ECU DME is a factory-original electronic engine control unit designed for use with automatic transmissions in selected BMW 3 and 5 Series models. This DME controller from the Electronic control modules and controllers category ensures precise management of the N52 engine unit, supporting stable operation, proper dynamics, and correct communication with other vehicle systems. Thanks to its original OEM design, it is a solution that allows for a technically correct repair of the engine control system without interfering with the factory wiring architecture.

Specifications and technical data

• SKU: 7555361-9
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7555361
• Substitutable numbers: 12147577970, 7577970, 12147555361, 7555361, 61356943771, 6943771, 5WK90078
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The presented engine controller is designed for N52 gasoline engines used in BMW E60, E90, and E91 models in 323i and 523i versions equipped with an automatic transmission. Its task is to comprehensively manage engine operating parameters, such as fuel injection, ignition timing, and starting strategies, while taking into account signals from sensors and the requirements of on-board systems.

Thanks to dedicated software, the controller communicates with the automatic transmission, the electronic stability control system, and other modules, which allows for consistent operation of the entire powertrain. A properly selected DME module is crucial for the correct functioning of features such as smooth gear shifts, throttle response, and stable idle speed.

Benefits of using an original BMW ECU

Choosing an original controller from the Electronic control modules and controllers group allows you to maintain factory engine performance parameters and compatibility with the vehicle's electrical system. Proper matching based on fuel type and transmission type reduces the risk of CAN communication errors, starting problems, or malfunctions of comfort features.

The main advantages of using this module include:

• preservation of factory engine control maps for the N52 unit,
• proper cooperation with the automatic transmission,
• consistency with the electronic architecture of the BMW E60, E90, and E91,
• possibility of diagnostics and adaptation using standard BMW service tools.

As a result, the controller is a practical solution both for repairs following an ECU failure and for replacing a damaged module in vehicles used on a daily basis.

Technical characteristics and vehicle integration

The DME module is adapted for operation in a gasoline engine system where precise fuel metering and ignition control across a wide load range are critical. The use of a version intended for an automatic transmission ensures correct data exchange with the transmission control module, which translates into smooth gear changes and appropriate engine protection strategies.

The controller works with a network of sensors and actuators in the engine bay, as well as with other electronic modules of the vehicle. Proper matching based on the OEM part number and interchangeable numbers (visible in the specification) is essential when selecting a component for a specific car configuration. In practice, this means the module can be used as a replacement part within the same family of controllers, while maintaining hardware and software compatibility.

Condition, application, and selection by part numbers

The offered controller is a used item, which in the case of automotive electronics often represents a cost-effective solution while maintaining the functionality required for daily operation. Before installation, it is recommended to verify compatibility by the OEM part number and reference numbers, as well as to consult a diagnostician regarding potential adaptation or programming for a specific vehicle.

To facilitate the selection of the appropriate ECU module and other on-board electronic components, it is worth using a guide describing the principles of matching by VIN, OEM numbers, and hardware/software compatibility – detailed information can be found in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding the control system in a BMW

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 additional controllers, engine management modules, or auxiliary controllers, check out the available parts in the BMW electronic control modules and controllers category.