Mini Cooper R55 R56 N12 1.6 120HP ECU Kit DME CAS3 + Key 7589971 Manual

Mini Cooper R55 R56 N12 1.6 120HP ECU Kit DME CAS3 + Key is a complete engine control and immobilizer kit designed for Mini vehicles equipped with the 120 HP N12 engine and a manual transmission. The set includes the DME engine control unit, the CAS3 module, and a matched key, which facilitates restoring the electronic system's functionality without the need for complex programming from scratch. This is a practical solution when replacing a faulty controller or the entire vehicle starting system.

Specifications and technical data

• SKU: 7589971-9
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7589971
• Substitutable numbers: 12147589971, 7589971, 12147589972, 12147572264, 12147572276, 12147572256, 12147572260, 12147620005, 12147572270, 12147620001, 12147572268, 12147620076, 12147620020, 12147572274, 12147572272, 12147572266, 0261S04563, 61359217853
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME CAS3 kit

The presented kit belongs to the Electronic control modules and controllers category and is designed to work with the 1.6 120 HP N12 engine in Mini Cooper R55 and R56 models. Combining the DME controller with the CAS3 module and the key ensures consistent operation of the fuel injection, ignition, engine management, and immobilizer system, which is crucial for stable starting and proper operation of the powertrain. The completeness of the kit helps reduce the risk of issues with matching electronic components, especially in vehicles after an engine swap or accident repairs. Thanks to this solution, you can systematically restore the original logic of engine control and start authorization.

Benefits of using a complete controller kit

Using a ready-made ECU DME kit with the CAS3 module and key in a Mini Cooper with an N12 engine offers a number of practical benefits:

• consistency of engine electronics and immobilizer – the components come from a single set, which facilitates vehicle configuration,
• reduced need for deep programming – in many cases, matching the kit to a specific car is sufficient,
• organized diagnostics – easier tracking of potential errors in the controller and CAS3 module,
• possibility of restoring vehicle functionality after a controller failure or starting problems. For workshops specializing in the Mini brand and users looking for a service solution, such a kit provides a functional base for repairing the engine's electronic system without the need to source individual modules from different suppliers.

Compatibility with the N12 engine and manual transmission

This kit has been prepared for use with the 1.6 120 HP N12 engine in a manual transmission configuration. The appropriate control maps and DME operating logic are tailored to the characteristics of this unit and the drivetrain, which translates into predictable throttle response, stable idle speed, and proper cooperation with other vehicle systems. When selecting a kit for a specific Mini, it is worth verifying compatibility based on the OEM number and interchangeable part numbers, as well as comparing the vehicle's equipment configuration. This helps avoid problems with software and hardware compatibility.

Condition, origin, and installation aspects

The kit comes from the Mini brand and is a used item, which in workshop practice often represents a reasonable compromise between repair cost and functionality. Used control modules, with proper verification and diagnostics, can successfully continue to operate in another vehicle, ensuring stable powertrain performance. Before installation, it is recommended to perform a full diagnostic, check the error memory, and – if necessary – adapt the kit to the specific car. Professional installation and configuration by a specialized automotive electronics service minimize the risk of problems with starting, bus communication, and immobilizer operation.

Technical support and selecting used electronics

If you want to better understand how to safely select and install used engine controllers and other electronic modules, it is worth consulting practical technical materials. A detailed discussion on selection based on VIN and OEM numbers, hardware and software compatibility principles, and typical service questions can be found in the article Used automotive electronics – ECU modules and second-hand sensors. If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other components from the same group, such as engine controllers, comfort modules, or body control units, check the available parts in the Mini Electronic control modules and controllers category.