BMW E90 E91 E92 335i 306HP Engine N54 ECU Kit DME 7575875 + CAS3 + Key Automatic

BMW E90 E91 E92 335i 306HP Engine N54 ECU Kit DME + CAS3 + Key Automatic is a complete electronic set designed for N54 engine powertrains in BMW 3 Series 335i models. It includes the DME engine control unit, CAS3 module, and a key, which facilitates matching to a vehicle equipped with an automatic transmission and allows for efficient replacement of the factory control system. This set from the Electronic control modules and ECUs category is a practical solution for repairing engine electronics and ignition systems.

Specifications and technical data

• SKU: 7575875-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7575875
• Substitutable numbers: 12147616431, 7616431, 12147575875, 7575875, 5WK93628, 61356943834, 6943834
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application of the ECU DME CAS3 kit with key

The presented set is intended for BMW 3 Series E90, E91, and E92 generation vehicles in the 335i version with 306 HP and the N54 engine, working with an automatic transmission. The combination of the DME engine control unit, CAS3 module, and key enables consistent operation of the ignition, key authorization, and engine management functions, which is important when replacing a damaged control unit or complete engine electronics.

Construction and function of the kit components

The set includes an engine control unit responsible for managing the N54 unit, a CAS3 module handling key authorization and communication with the vehicle's security system, and a key matched to this set. This combination of elements allows for maintaining consistency between the engine electronics and the immobilizer system, which is essential for control system repairs in modern BMW vehicles.

Thanks to the integration with the automatic transmission, the set is prepared to work with the factory drivetrain configuration in 335i models, which facilitates restoring proper communication between the engine control unit and other modules in the vehicle.

Benefits of using a complete ECU kit

Using a complete DME + CAS3 + key set in a BMW 335i with an N54 engine helps reduce issues related to matching individual modules and their programming. In practice, this means:

• consistency of engine electronics and security systems,
• easier matching to vehicle configurations with automatic transmission,
• the possibility of using the set as a base for further configuration and adaptation in the vehicle.

The product comes from the Electronic control modules and ECUs group, which means it is designed to work in an environment requiring precise communication with other vehicle modules, such as comfort systems, ABS, or the transmission.

Characteristics as a used BMW control unit

As a used item, the ECU DME CAS3 set with key is a solution that allows for reducing repair costs while maintaining the original BMW electronic architecture. Such components are frequently used in professional workshops specializing in the BMW brand, especially when repairing vehicles with the N54 engine, where maintaining compliance with the factory control system is crucial.

Before installation, it is recommended to verify compatibility with the specific vehicle configuration and prepare for potential software adaptation in the vehicle, in accordance with procedures used in automotive electronics services.

Selection and operation of used control modules

When choosing a used ECU set for a BMW 335i, it is worth paying attention to the vehicle generation, engine type, and transmission type. A complete kit with DME, CAS3, and key facilitates the installation and subsequent configuration process because the key elements of the security system come from a single donor vehicle.

If you want to better understand when choosing used control units and electronic modules is justified, how to assess their suitability, and what to pay attention to during installation, check out our guide: The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?

If you are planning a comprehensive repair or upgrade of your BMW's engine electronics and need other elements from the same group, such as additional control units, engine management modules, or systems cooperating with the powertrain, check out the available parts in the BMW electronic control modules and ECUs category.