Mini One R55 R56 N12 1.4 95HP Engine Control Unit ECU Kit DME 7640005 CAS3 Key

Mini One R55 R56 N12 1.4 95HP Engine Control Unit ECU Kit DME CAS3 Key is a complete engine control kit designed for petrol versions of the Mini One with an automatic transmission. The set includes the DME engine control unit, the CAS3 module, and a matched key, which facilitates professional electronics replacement without the need for time-consuming programming from scratch. This is a practical solution for workshops and users who want to restore the proper operation of the power unit in the most seamless way possible.

Specifications and technical data

• SKU: 7640005-12
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7640005
• Substitutable numbers: 7640005, 12147640005, 7589971, 12147589971, 7640001, 12147640001, 0261S04161, 0 261 S04 161, 9226238, 61359226238, 9395657, 61359395657, 9287535, 61359287535, 9237047, 61359237047, 9217853, 61359217853, 9147226, 61359147226
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and function of the ECU DME CAS3 kit

The presented engine control kit is dedicated to Mini One R55 and R56 series models with the N12 95 HP engine, powered by petrol and equipped with an automatic transmission. The DME controller is responsible for precise management of the power unit's operation, including fuel injection, ignition, and communication with other vehicle modules. The CAS3 module plays a key role in the start authorization system, and the included key ensures the consistency of the entire system.

Benefits of installing a complete engine control unit kit

Using a complete ECU kit with the CAS3 module and key significantly simplifies the process of repairing the electronic system in a Mini. In practice, this means:

• maintaining compatibility between the engine controller and the immobilizer system,
• reducing the need for advanced coding and adaptation,
• consistent operation of the starting and powertrain control system,
• easier diagnostics in case of further service work.

For workshops specializing in the Mini brand, such a kit is an effective service tool, allowing for reduced vehicle downtime and minimizing the risk of communication problems between modules.

Characteristics of the engine electronics in the Mini One N12

The N12 engine in the Mini One requires a precisely matched controller that works correctly with the automatic transmission and other vehicle systems. The ECU DME CAS3 kit with key has been factory-configured to operate in such an environment, ensuring that it:

• provides stable operation of the power unit across the full load range,
• enables proper communication with comfort and safety modules,
• is prepared for integration with the factory Mini electrical installation.

As an item from the Electronic control modules and controllers group, this product serves as the central point for managing engine performance parameters, which has a direct impact on engine refinement, performance, and fuel consumption.

Condition, verification, and selection of a used ECU kit

The offered kit comes from the secondary market, making it an attractive cost-effective alternative to new OEM components. Before installation, it is recommended to perform a standard verification of compatibility with the specific vehicle equipment version and consult an automotive electrician regarding any necessary adaptations. A used engine controller with a matched CAS3 module and key is a particularly beneficial solution for accident repairs, immobilizer issues, or damage to the original ECU.

If you want to better understand when choosing a used engine controller is justified and how to safely select such an element for your car, check out our guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

Expanding repairs in the Mini electronics area

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other elements from the same group, such as additional controllers, cooperating modules, or related electronic systems, check out the available parts in the Mini electronic control modules and controllers category.