Mini Cooper D R55 R56 LCI N47N 112HP Diesel Engine ECU Kit DDE 8512415 CAS3 Keys

Complete DDE engine control unit set with CAS3 module and keys for Mini Cooper D R55/R56 LCI with 112 HP Diesel engine N47N is a professional solution for workshops and users who need a functional, factory-standard engine control system. The set comes from the Electronic control modules and units group, which guarantees component consistency and facilitates the restoration of full vehicle functionality after an electronic failure or engine replacement.

Specifications and technical data

• SKU: 8512415-10
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 8512415
• Substitutable numbers: 13618519663, 8519663, 13618517727, 8517727, 13618512415, 8512415, 13618516739, 8516739, 13618506666, 8506666, 0281017509, 0 281 017 509, 61359221719, 9221719, KZ
• Fuel type: Diesel
• Category: ECUs & Computer Modules

Purpose and function of the DDE ECU + CAS3 + keys set

The offered set includes the DDE engine control unit, the CAS3 module, and matched keys, prepared to work with the N47N 112 HP diesel engine in Mini Cooper D R55/R56 LCI models. This complete package allows for the recreation of the vehicle's original electronic configuration, which is particularly important when replacing a damaged control unit, dealing with immobilizer issues, or performing an engine swap.

The combination of the DDE control unit with the CAS3 module and keys ensures system security consistency, proper start-up authorization, and stable operation of the diesel injection system. This helps avoid time-consuming adaptations and zero-based programming, which in practice reduces repair time and minimizes the risk of communication errors between modules.

Benefits of using an original Mini set

The ECU set for Mini Cooper D R55/R56 LCI is designed as part of the factory control system, which is why it offers high compatibility with the vehicle's electrical system and other modules. The original diesel control architecture translates to correct fuel doses, proper control of injection system pressure, and stable engine operation across the full load range.

In practice, this means, among other things:

• maintaining the factory operating parameters of the N47N 112 HP unit,
• correct interaction with onboard systems (e.g., dashboard, comfort system),
• reduced risk of starting problems resulting from immobilizer inconsistencies,
• easier computer diagnostics due to compatibility with factory service software.

For workshops specializing in the Mini brand, such a set is a convenient service solution, allowing for faster vehicle restoration without the need for tedious matching of individual modules.

Technical characteristics in the context of a diesel engine

The DDE control system in this set is designed to work with a diesel engine, meaning it supports diesel-specific functions such as injection control, boost pressure control, and combustion parameter monitoring. Using the appropriate control unit for a given fuel type is crucial for the durability of the engine and the proper operation of engine protection systems.

In the case of the Mini Cooper D R55/R56 LCI with the N47N 112 HP unit, a correctly selected DDE + CAS3 + keys set helps maintain stable idle speed, proper throttle response, and correct operation of OBD diagnostic functions. This is particularly important for vehicles used intensively, where precise injection control affects both running smoothness and fuel consumption.

Condition, compatibility, and installation aspects

The offered set comes from a used vehicle, which means it is a set with proven, real-world operational experience. For many workshops and users, this represents a favorable combination of functionality and attractive pricing compared to new modules. The set as a whole is particularly useful where several elements of the security system have been damaged or when programming a single control unit from scratch is not cost-effective.

Before installation, it is recommended to verify vehicle compatibility using the VIN and consult with an automotive electrician or diagnostician to ensure proper installation and any necessary adaptations. Professional connection of the set minimizes the risk of CAN communication errors and starting problems.

Technical support and selection of the appropriate module

If you want to better understand how to safely choose used engine control units, DDE modules, and other onboard electronics, it's worth checking out our guide: Used automotive electronics on board – why choose second-hand ECU modules and sensors?. You will find practical tips on selection by OEM number, hardware and software compatibility, and common installation-related questions.

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other parts from the same group, such as control units, comfort modules, or engine management systems, check the available parts in the Mini Electronic control modules and units category.