BMW E60 E90 325i 525i N52 218HP Engine ECU Kit DME 7561684 CAS2 + Key Manual

BMW E60 E90 325i 525i N52 218HP Engine ECU Kit DME CAS2 + Key Manual is a factory electronic control unit designed for N52 engines with 218 HP, used in popular 3 and 5 series models. As a part of the Electronic control modules and controllers category, it is responsible for precise engine management, ensuring stable parameters and proper cooperation with the vehicle's other electronic systems. This is a solution for users and workshops looking for a proven ECU module matched to a specific powertrain configuration.

Specifications and technical data

• SKU: 7561684-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561684
• Substitutable numbers: 12147577970, 7577970, 12147561684, 7561684, 5WK98084, 61356943791, 6943791, KZ
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented engine controller is dedicated to N52 petrol engines with 218 HP installed in BMW E60 and E90 series in 325i and 525i versions. The controller is responsible for key processes such as fuel injection, ignition timing, auxiliary equipment control, and communication with other vehicle modules. Thanks to this, the engine maintains proper operating parameters under various load and temperature conditions.

The module belongs to the Electronic control modules and controllers group, which means it communicates with the vehicle's communication bus and is an integral part of the powertrain management system. A properly selected controller allows for maintaining compatibility with the factory car configuration, which is important for both reliability and service diagnostics.

Compatibility with powertrain and vehicle configuration

This engine controller is prepared for use with a manual transmission, which is important when selecting parts for a specific equipment version. Using a controller matched to the type of transmission reduces the risk of communication errors, engine operation problems, or incorrect responses to load.

Before installation, it is recommended to verify compatibility by OEM number and interchangeable numbers, as well as by engine configuration and vehicle year. This ensures that the workshop or user can be certain that the module will work correctly with the electrical installation, sensors, and other controllers in the car.

Product characteristics and practical application

The offered engine controller is a BMW brand component, sourced from dismantling, which allows for maintaining the factory operating characteristics of the powertrain. A used controller is a good solution in situations where the original module has suffered electronic damage, there are communication problems via the bus, or errors appear that cannot be cleared by standard diagnostics.

In practice, such a controller is used, among others, for:

• repairs after engine electronics failure,
• replacing a damaged ECU with a functional OEM module,
• restoring factory configuration after unsuccessful software modifications.

For proper operation, it is necessary to carry out appropriate adaptation, coding, or programming procedures in accordance with the requirements of the given BMW model and vehicle equipment.

Selecting a used ECU and technical support

When choosing a used engine controller, it is crucial to match it by part number, reference numbers, and hardware/software compatibility. Proper selection minimizes the risk of engine starting problems, communication errors with other modules, or functional limitations. Detailed tips on module selection, including matching by VIN and OEM, can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding repairs with other BMW modules

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 comfort controllers, body modules, or transmission controllers, check the available parts in the BMW electronic control modules and controllers category.

To better plan the car's downtime at the service center and the costs associated with replacing the controller, it is also worth familiarizing yourself with practical tips regarding the availability of used OEM parts and their impact on repair speed: Availability of car parts off the shelf vs. repair time – how do used OEM parts shorten the stay in the workshop?.