BMW 1 3 Series E87 LCI E90 118i 318i Petrol ECU Kit N43 DME 7579142 + CAS3 + Key

BMW 1 3 Series E87 LCI E90 118i 318i Petrol ECU Kit N43 DME + CAS3 + Key is a complete petrol engine control kit, including the DME module, CAS3 module, and a matched key. The set is designed for selected BMW 1 and 3 Series models with the N43 engine, ensuring consistent operation of the ignition system, immobilizer, and engine management. It is a practical service solution for vehicles requiring the replacement of the entire control electronics package.

Specifications and technical data

• SKU: 7579142-12
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7579142
• Substitutable numbers: 12147583225, 7583225, 121476211781214759988112147595179, 121475936661214750722712147579142, 7621178, 75998817595179759366675072277579142, 121475853031214758322512147580279, 75853037583225758027975756657573758, 61359147195, 5WK93709
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Application of the ECU DME + CAS3 + Key kit

The presented control kit is intended for BMW 1 Series E87 LCI and 3 Series E90 vehicles with the N43 petrol engine in 118i and 318i versions. Combining the DME engine controller with the CAS3 module and a matched key allows for maintaining the integrity of the security system and starting logic, which is particularly important when replacing electronics in vehicles with advanced immobilizers.

Since all key control elements are included in one package, it is possible to reduce the need for additional programming and minimize the risk of issues with key authorization or communication between modules. This service solution is especially useful for major engine electronics faults or after wiring damage.

Benefits of using a complete engine control kit

The ECU kit with the CAS3 module and key provides a number of practical advantages in the repair process:

• consistency of the electronics responsible for starting and vehicle security,
• reduction in the scope of coding and adaptation compared to replacing individual modules,
• maintenance of compatibility between the engine controller and the immobilizer system,
• possibility of effective repair for vehicles with a damaged petrol engine control system.

For workshops specializing in the BMW brand, such a kit is a convenient solution that allows for shorter diagnostic and installation times. For the end user, this means a faster return of the vehicle to full efficiency and stable operation of the powertrain.

Characteristics of working with the N43 petrol engine

The N43 engine is a modern petrol unit where the DME controller is responsible for precise management of fuel injection, ignition, and cooperation with other vehicle systems. Using a dedicated ECU kit with the CAS3 module and key allows for maintaining proper communication within the vehicle network, which translates into stable engine operation, correct functioning of the start/stop feature (if present in the specific configuration), and proper handling of security features.

In the case of petrol units, correct synchronization of signals from sensors, ignition coils, and the injection system is particularly important. A complete control kit facilitates maintaining this synchronization, as all components have been factory-tuned to work together within a single vehicle.

Condition, verification, and selection by numbers

The offered set belongs to the Electronic control modules and controllers category for the BMW brand and is a used item, which in workshop practice often represents a beneficial compromise between repair cost and functionality. Before installation, standard diagnostics and verification of compatibility with the specific vehicle configuration are recommended, including checking compatibility by OEM part number and interchangeable numbers available in the specification.

To maximize the potential of this solution, it is worth selecting the kit based on the vehicle's VIN and controller parameters, which helps avoid hardware and software compatibility issues. If necessary, the workshop can perform additional coding or adaptation, adjusting the modules to the equipment of a specific BMW unit.

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

Expert support and selection of used electronics

When working with used controllers and security modules, proper component matching and understanding the relationship between software and hardware is crucial. A detailed discussion of the principles of selection by OEM numbers, HW/SW compatibility, and practical aspects of installation can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Thanks to this material, you will find it easier to plan the repair, assess the cost-effectiveness of using a used ECU kit, and prepare for potential coding and adaptation procedures in your BMW.