BMW E60 E90 E91 N52 325i 525i 218HP Engine Control Unit ECU DME 7553166 Manual

BMW E60 E90 E91 N52 325i 525i 218HP Engine Control Unit ECU DME is a factory-original engine control unit from the Electronic control modules and controllers category, designed for use with the N52 engine in BMW 3 and 5 series models. The module ensures precise engine management in vehicles equipped with a manual transmission, supporting stable engine performance and the correct operation of onboard systems.

Specifications and technical data

• SKU: 7553166-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7553166
• Substitutable numbers: 12147553166, 7553166, 12147577970, 7577970, 12147553400, 7553400, 5WK90077
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented DME controller is responsible for comprehensive management of N52 engine parameters in BMW E60, E90, and E91 series in 325i and 525i versions. It controls, among other things, fuel injection, ignition timing, auxiliary equipment operation, and communication with other vehicle modules, which translates into stable engine performance and proper cooperation with safety and comfort systems.

The module is configured for use with a manual transmission, which is crucial when selecting the appropriate ECU for a specific vehicle configuration. This allows for maintaining the correct drivetrain control logic without the need to adapt solutions intended for other types of transmissions.

Benefits of using an original DME module

Using an original engine control unit in a BMW with an N52 engine allows for maintaining the consistency of the vehicle's electronics with the factory architecture. In practice, this means:

• maintaining compatibility with the vehicle's electrical installation and communication network,
• proper cooperation with sensors and other modules,
• the possibility of diagnostics using standard BMW service tools,
• reducing the risk of errors resulting from the use of an unsuitable controller.

For workshops and users, this means a more predictable installation process and easier configuration during programming and adaptation to a specific vehicle.

Product characteristics and practical application

The offered module belongs to the Electronic control modules and controllers group, which highlights its key role in managing engine operation and communication within the vehicle network. It is a component intended for BMW vehicles with an N52 engine where replacement or retrofitting with a compatible DME controller is required, especially in the case of electronic faults or engine upgrades within the same engine family.

Due to the nature of the ECU, it is recommended to perform professional diagnostics and prepare for programming to the specific vehicle VIN before installation. This allows for the correct assignment of the module to the car, integration with the immobilizer, and other safety systems.

Selection, compatibility, and technical support

When selecting an engine control unit for a BMW E60, E90, or E91 with an N52 engine, it is worth paying attention to compatibility with the engine version, transmission type, and electronic architecture of the given model year. Both OEM markings and interchangeable numbers assigned to this ECU model are helpful, as they facilitate the identification of the correct variant in parts catalogs.

To better understand the specifics of installation, programming, and compatibility issues of used controllers, it is worth using the Global Parts guide – it discusses in detail selection by VIN/OEM, hardware and software compatibility, and practical application examples: 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 elements from the same group, such as auxiliary controllers, accessory management modules, or additional ECU units, check the available parts in the BMW electronic control modules and controllers category.