BMW E90 E92 335i Petrol N54 ECU Kit Control Unit DME 7586933 CAS3 Key Automatic

BMW E90 E92 335i Petrol N54 ECU Kit Control Unit DME CAS3 Key Automatic is a complete engine control and immobilizer kit designed for petrol versions of the BMW 3 Series with an automatic transmission. The kit includes the DME engine control unit, the CAS3 module, and a matched key, allowing for a consistent and technically correct restoration of the electronic system's operation. This solution is particularly useful when replacing a damaged control unit or during advanced electrical system repairs.

Specifications and technical data

• SKU: 7586933-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7586933
• Substitutable numbers: 12147616431, 7616431, 12147586933, 7586933, 5WK93714, 61359147220, 9147220
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME CAS3 kit

The presented kit is part of the Electronic control modules and ECUs category, designed to work with the N54 petrol engine in the BMW 335i model with an automatic transmission. Combining the DME control unit with the CAS3 module and the key ensures the consistency of immobilizer data, which significantly simplifies installation and reduces the need for complex programming. As a result, this kit can be used both for replacing a faulty control unit and for resolving vehicle starting issues.

Benefits of using a complete kit

Using a complete ECU kit with the CAS3 module and key in a BMW 335i with an N54 petrol engine and automatic transmission allows for:

• maintaining compatibility between the engine control unit and the immobilizer system,
• reducing the risk of communication errors in the vehicle's CAN network,
• accelerating the diagnostic and startup process after repairs,
• more predictable engine performance after replacing electronic components.

For workshops specializing in the BMW brand, such a kit is a practical and effective solution for major engine electronics failures.

Technical characteristics in the context of the N54 engine

The N54 engine in the BMW 335i is an advanced petrol unit where the DME control unit is responsible for precise management of injection, ignition, and cooperation with the automatic transmission. The ECU DME kit with the CAS3 module and key is prepared to operate in exactly this environment, ensuring:

• proper handling of start functions and key authorization,
• coordination of engine operation with the automatic transmission,
• integration with other vehicle electronic systems (e.g., comfort system, security features).

Proper matching of the kit to the fuel type and transmission type is crucial for the stable operation of the powertrain and correct communication with the rest of the installation.

Condition, origin, and service application

The offered kit comes from a BMW vehicle and is marked as used, making it an attractive cost-effective alternative to new components. For professional service centers and advanced users, it serves as a valuable base for repairing vehicles after engine control unit failures, CAS3 issues, or loss of communication with the key. In practice, this allows for the restoration of vehicle functionality while maintaining high-quality OEM components.

Selection and additional information on BMW electronics

When selecting a used ECU kit for a BMW 335i with an N54 engine and automatic transmission, it is crucial to pay attention to application compatibility and the group of replacement numbers specified in the technical documentation. This allows for precise matching of the control unit to the specific car configuration and avoids compatibility issues.

If you are planning a comprehensive repair or upgrade of the control electronics in your BMW and need other components from the same group, such as engine control units, comfort modules, or transmission controllers, check out the available parts in the BMW electronic control modules and ECUs category.

To better evaluate when choosing a used engine control unit, comfort module, or sensor is technically and economically justified, it is worth reading our guide: A second life for electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?.