BMW 1 3 Series E87 LCI E90 318i N43 ECU KIT DME 7579142 CAS3 2 Keys Automatic

BMW 1 3 Series E87 LCI E90 318i N43 ECU KIT DME CAS3 2 Keys Automatic is a complete electronic set designed for the engine control and immobilizer system in selected BMW 1 and 3 Series models. The kit includes the DME engine control unit, the CAS3 module, and two keys, which significantly facilitates vehicle matching and reduces the need for additional programming. This is an ideal solution for workshops and users who require a consistent, factory-spec engine electronics package.

Specifications and technical data

• SKU: 7579142-8
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7579142
• Substitutable numbers: 12147583225, 7583225, 121476211781214759988112147595179, 121475936661214750722712147579142, 7621178, 75998817595179759366675072277579142, 121475853031214758322512147580279, 758530375832257580279757566575737589147212, 61359237047, 9237047, 12147575665
• Gearbox type: Automatic
• Category: Control Modules

Purpose of the ECU DME CAS3 kit

The presented kit is dedicated to BMW 1 Series E87 LCI and 3 Series E90 318i vehicles with the N43 engine and an automatic transmission. Combining the DME controller with the CAS3 module and paired keys ensures the consistency of the security system and the engine management logic, which is essential for both reliable starting and proper communication with other vehicle modules.

Kit construction and key components

The set includes the DME engine controller responsible for managing the N43 unit, the CAS3 module acting as the central component of the access and start system, and two electronic keys assigned to this module. This configuration ensures data consistency across the entire system, which is particularly important when replacing electronics in modern BMWs.

Because all components come from a single set, it is possible to limit the scope of adaptation and coding in the vehicle, which in practice shortens repair time and reduces the risk of communication issues between modules.

Benefits of using a complete ECU KIT

Using a complete ECU DME kit with CAS3 and keys provides a number of practical benefits in daily workshop operations and vehicle repairs:

• a consistent engine and immobilizer electronics package, facilitating vehicle configuration,
• maintaining data integrity between the DME controller and the CAS3 module,
• reducing the need for deep programming and key registration,
• better predictability of repair results compared to sourcing individual modules.

For workshops specializing in the BMW brand, such a set provides a convenient base for further adaptation work, and for the end user, it means a better chance of efficiently restoring full vehicle functionality.

Application in vehicles with automatic transmission

The discussed set has been prepared for cars equipped with an automatic transmission. This is important for the proper cooperation of the engine controller with the transmission control module, including gear shift strategy, torque control, and data bus communication. Proper matching of the kit to the transmission type is crucial to avoid communication errors and improper operation of the drivetrain.

Characteristics of the used product

The presented ECU KIT comes from the secondary market, making it an attractive cost-effective alternative to new components. Used BMW electronic components are popular in professional workshops, provided they are correctly selected based on the model, engine version, and transmission type. In this case, you receive a complete DME + CAS3 + keys package, which, after proper adaptation, can restore full functionality to the engine control system.

If you would like to learn more about the specifics of installing and selecting used control modules, it is worth checking out a guide describing the practical aspects of purchasing second-hand electronics – you can find it in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

Expanding the control system in BMW

If you are planning a comprehensive repair or upgrade of the engine control area in your BMW and need other elements from the same group, such as additional control modules, auxiliary controllers, or onboard system controllers, check the available parts in the BMW Computers and Controllers category.

Summary

BMW 1 3 Series E87 LCI E90 318i N43 ECU KIT DME CAS3 2 Keys Automatic is a practical solution for service centers and users looking for a complete, factory-spec engine electronics set for specific BMW models. Combining the DME controller, CAS3 module, and paired keys simplifies the repair process, reduces the scope of necessary programming, and allows for faster vehicle restoration while maintaining high compatibility with the original car configuration.