BMW E90 E91 E92 N52N 325i 218HP ECU Kit DME 7574544 CAS3 + Key Manual

BMW E90 E91 E92 N52N 325i 218HP ECU Kit DME CAS3 + Key Manual is a complete electronic set designed for the engine management system in BMW 3 Series models with the N52N unit. It includes the DME engine control unit, the CAS3 module, and a matched key, which facilitates the restoration of proper drivetrain electronics operation after a failure or component replacement. This solution is particularly useful for professional repairs, engine swaps, and diagnostics of advanced BMW systems.

Specifications and technical data

• SKU: 7574544-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8613000
• Substitutable numbers: 12147574544, 7574544, 12147581123, 7581123, 12148613000, 8613000, 61356943830, 6943830, 5WK90210, KZ
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application of the ECU DME CAS3 + Key Kit

The engine control unit set with the CAS3 module and key is designed for BMW vehicles with the 218 HP N52N engine, equipped with a manual transmission. Such a set allows for consistent management of the powertrain, immobilizer, and start authorization, which is crucial for the proper operation of modern security systems and driving comfort.

Combining the DME with the CAS3 and key in one set minimizes the risk of component mismatch issues, which in practice shortens service time and reduces the need for additional programming. This is especially important in the case of advanced BMW electronics, where component compatibility has a direct impact on engine stability and the absence of system errors.

Benefits of using an original BMW control module

The original set from the Electronic control modules and ECUs category ensures the preservation of factory operating parameters for the N52N engine, including the power and torque characteristics intended for the 325i 218 HP version. As a result, the vehicle maintains proper operating culture, throttle response, and cooperation with other onboard systems.

Choosing a used, functional ECU DME set with CAS3 and key is a reasonable cost-effective solution while maintaining high quality and compatibility. The complete control package also facilitates work during engine replacement, repairs after electronic damage, or restoring the car to full functionality after immobilizer issues.

Integration with manual transmission

The presented set is intended for vehicles with a manual transmission, which is significant for torque control logic, ignition cut-off functions, idle speed control, and cooperation with safety systems. Using the correct ECU variant for a manual gearbox reduces the risk of communication errors with other modules and ensures predictable vehicle behavior in all conditions.

For workshops specializing in BMW, this means the possibility of faster and more predictable vehicle configuration after replacing the controller, without the need for deep software modifications for a different type of transmission.

Condition, verification, and selection of the appropriate set

The item comes from the used OEM BMW components segment, which allows combining an attractive cost with the preservation of the vehicle's original electronic architecture. Before installation, it is recommended to perform a standard diagnostic procedure and match the configuration to the specific car, in accordance with BMW service practice.

If you want to better understand when choosing a used engine controller, comfort module, or sensors is profitable and safe, it is worth reading the guide: Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. You will find practical tips there regarding the selection and verification of automotive electronics.

Expanding work on BMW electronics

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, management modules, or auxiliary systems, check the available parts in the BMW Electronic control modules and ECUs category.

For those thinking about further modifications or optimizing the vehicle for performance and operating characteristics, inspiration can also be found in the article: The best used parts for tuning your car, which discusses the possibilities of using used components in tuning projects.