ECU Kit Mini R55 R56 R57 N12 1.6 120HP Control Unit DME 7589971 + CAS3 + Key

ECU Kit Mini R55 R56 R57 N12 1.6 120HP Control Unit DME + CAS3 + Key is an original electronic control module from the Electronic control modules and controllers category, designed for Mini vehicles equipped with the N12 1.6 120HP engine. The kit includes a CAS3 module along with a matched key, which facilitates the professional replacement of the start authorization system and immobilizer handling in cars with a manual transmission.

Specifications and technical data

• SKU: 7589971-4
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7589971
• Substitutable numbers: 12147589972, 7589972, 12147572264121475722761214757225612147572260, 7572264757227675722567572260, 12147572268121476200051214757227012147620076, 7572268762000575722707620076, 121476200011214762002012147572274, 762000176200207572274, 12147572272121, 12147589971, 7589971, 12147640005, 7640005, 12147640001, 7640001, 12147600020, 7600020, 12147600076, 7600076
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the CAS3 module

The CAS3 module in a Mini is responsible for advanced vehicle access and start functions, integrating key handling, immobilizer operation, and communication with other controllers in the vehicle's network. In this set, you receive a CAS computer matched to the N12 1.6 120HP unit, compatible with a manual transmission, allowing for use in typical R55 and R56 model configurations.

As this is an item from the Electronic control modules and controllers category, the module works with the vehicle's data bus, ensuring proper start authorization, key handling, and information exchange with other controllers responsible for engine operation and comfort systems.

Advantages of the CAS3 + key kit

The kit includes a CAS3 computer along with a key, which significantly simplifies the process of matching it to the vehicle compared to purchasing a single module. The presence of the key allows for a more flexible approach to programming and adaptation in the vehicle, and also facilitates work for workshops specializing in Mini electronics.

Key benefits include:

• completeness of the set – CAS3 module and key in one package,
• intended for the N12 1.6 120HP unit, which makes it easier to select for a specific engine configuration,
• adapted for vehicles with a manual transmission,
• original Mini origin, which helps maintain the factory logic of system operation.

Selection by OEM numbers and compatibility

The module has a dedicated OEM part number and an extensive list of interchangeable numbers, which allows for precise matching to a specific vehicle. When selecting, it is recommended to compare the OEM number and reference numbers with the vehicle data or use the VIN in service catalogs to confirm full hardware and software compatibility.

In the case of Mini onboard electronics, it is particularly important to match the hardware and software version of the CAS3 module to the other controllers in the vehicle. A correctly selected CAS computer minimizes the risk of communication errors in the vehicle network, starting problems, or improper immobilizer operation.

Professional installation and configuration

Due to the role of the CAS3 module in the vehicle's security system, installation and configuration should be performed by a workshop with experience in Mini electronics and appropriate diagnostic tools. In practice, the process includes:

• physical replacement of the CAS module in the vehicle,
• key adaptation and synchronization with other controllers,
• checking communication in the vehicle network and potential software updates.

This approach allows for stable operation of the starting system and maintenance of full functionality of security systems, in accordance with the manufacturer's factory specifications.

Technical support and additional information

If you want to better understand how to safely and consciously choose used controllers, CAS modules, and other onboard electronics components, it is worth checking out the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. You will find practical tips there regarding selection by OEM numbers, compatibility, and installation.

For users considering the choice between a used original part and a replacement, the following material will also be helpful: 5 reasons why a used OEM part is a better choice than a replacement, discussing quality, installation, and operational differences using popular models as examples.

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