BMW Z4 Series E89 30i N52N 258HP N52B30A ECU Kit DME CAS3 Key 7594483 Automatic

BMW Z4 Series E89 30i N52N 258HP N52B30A ECU Kit DME CAS3 Key is an advanced electronic set designed for the 258 HP version with the N52B30A engine and automatic transmission. The kit includes the DME engine control module, the CAS3 module, and a matched key, allowing for a consistent, professional replacement of the vehicle's control system. This solution is dedicated to workshops and users expecting compatibility with BMW's factory electronic architecture.

Specifications and technical data

• SKU: 7594483
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7594483
• Substitutable numbers: 12148613000 12147594483 5WK91136 61359147226, 8613000 7594483 9147226, 12147639564 12147624048 12147614359 12147605429, 7639564 7624048 7614359 7605429, 12147629052 12147609656 12147591709 12147583468, 7629052 7609656 7591709 7583468, 12147577996 12147587164, 75
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and compatibility

The presented BMW Z4 Series E89 30i N52N 258HP N52B30A ECU Kit DME CAS3 Key is intended for the BMW Z4 E89 30i series with the N52N engine, in the 258 HP petrol version, paired with an automatic transmission. Integrating the engine controller with the CAS3 module and the key ensures the consistency of the immobilizer system and powertrain electronics, which is crucial when replacing the control set in modern BMW designs.

A kit of this type is particularly useful in situations where the original controller has been damaged, there are issues with key authorization, or there is incorrect communication between modules in the vehicle. Using a ready-made set minimizes the need for deep programming intervention and shortens diagnostic time.

Kit construction and function of individual modules

The set includes an electronic DME engine control module responsible for precise management of the N52B30A unit, a CAS3 module acting as the access and ignition authorization system, and a matched key. This configuration allows for maintaining data consistency between the controller, the comfort/immobilizer module, and the transponder in the key.

As a result, the powertrain control system can operate in accordance with BMW's factory specifications, including engine parameter control, cooperation with the automatic transmission, and integration with other vehicle electronic systems. The set belongs to the Electronic control modules and controllers category, which highlights its importance in the vehicle's management system structure.

Benefits of using a complete ECU DME CAS3 kit

Using a complete control kit instead of individual modules brings a number of practical service benefits:

• data consistency between the engine controller, the CAS3 module, and the key,
• reduced risk of problems with the immobilizer and ignition authorization,
• reduced scope of necessary programming and adaptation,
• better predictability of the repair result compared to mixing different modules.

For workshops specializing in the BMW brand, this means a more predictable repair process, and for the end user – a better chance of restoring the correct operation of the powertrain in accordance with factory specifications. The complete control kit is particularly valuable in cases of major electronic failures or after unsuccessful attempts to program individual modules.

Characteristics of working with an automatic transmission

The presented kit is designed to work with an automatic transmission in the BMW Z4 E89 30i. Proper configuration of the engine controller for an automatic gearbox is important for correct gear shifting, load response, and cooperation with safety and driving comfort systems.

A properly selected BMW Z4 Series E89 30i N52N 258HP N52B30A ECU Kit DME CAS3 Key helps maintain the manufacturer's intended gear-shifting strategies, throttle response, and integration with driver assistance systems. This is especially important in higher-power cars, such as the 30i version, where control precision has a direct impact on the powertrain's refinement.

Condition, origin, and installation aspects

The offered set comes from disassembly and is classified as a used original BMW part. Such components are frequently chosen by workshops specializing in the brand because they allow for maintaining compliance with the factory electronic architecture and reducing costs compared to purchasing new modules.

During installation, it is recommended to perform a full vehicle diagnostic, verify the electrical wiring, and – if necessary – adjust the configuration to the specific car's specification. Work should be carried out by a service center with experience in handling BMW control systems, which will allow for fully utilizing the potential of the offered set.

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 controllers, comfort modules, or powertrain management systems, check the available parts in the BMW electronic control modules and controllers category.

For a comparison of how premium manufacturers approach maintaining brand character in the context of electronics and original components, it is worth reading the article on our blog: Audi and pure emotion – how used parts help maintain the brand's DNA.