BMW Mini One R55 R56 N12 1.4 95HP Petrol ECU Kit DME + CAS 3 + Key 7640004

BMW Mini One R55 R56 N12 1.4 95HP Petrol ECU Kit DME + CAS 3 + Key is a coherent engine electronics set designed for Mini vehicles. Thanks to the factory configuration of the components, it ensures stable cooperation of the powertrain control system with the immobilizer and key, which facilitates professional repair or replacement of a damaged ECU set.

Specifications and technical data

• SKU: 7640004-5
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7640004
• Substitutable numbers: 12147589972, 7589972, 12147572264 12147572276 12147572256 12147572260, 7572264 7572276 7572256 7572260, 12147572268 12147620005 12147572270 12147620076, 7572268 7620005 7572270 7620076, 12147620001 12147620020 12147572274, 7620001 7620020 7572274, 12147572272 121
• Fuel type: Petrol
• Category: Control Modules

Purpose and compatibility with the N12 1.4 95 HP unit

The presented BMW Mini One R55 R56 N12 1.4 95HP Petrol ECU Kit DME + CAS 3 + Key has been prepared for BMW Mini One R55 and R56 models equipped with the 95 HP N12 petrol engine. Integrating the engine controller with the CAS 3 module and a matched key allows for maintaining the consistency of the security system and starting logic, which is particularly important in modern electronic systems.

The set is dedicated to vehicles powered by petrol, ensuring that operating parameters, injection maps, and ignition timing are adapted to the characteristics of this powertrain. Such a solution reduces the risk of starting problems, communication errors between modules, and improper engine operation after replacing the controller.

Characteristics of the DME + CAS 3 + Key set

The offered set includes the DME engine controller, the CAS 3 module responsible for starting authorization, and a key that works with this set. This configuration creates a coherent electronic system, which in many cases allows avoiding time-consuming programming from scratch or matching individual components.

This type of solution is particularly useful for:

• replacing a damaged engine controller in a Mini One R55/R56,
• problems with communication between the ECU and the CAS 3 module,
• immobilizer faults preventing the vehicle from starting.

By maintaining the completeness of the set, it is possible to restore the correct cooperation of the powertrain electronics with the vehicle's security system, which has a direct impact on the reliability of daily operation.

Benefits of using an original ECU set in a Mini

The offered set belongs to the Computers and Controllers category, meaning it is responsible for key functions of engine management and starting authorization. Using an original set from dismantling allows you to:

• maintain the factory operating logic of Mini electronic systems,
• minimize the risk of incompatibility between the engine controller and the CAS 3 module,
• limit the scope of additional programming compared to selecting individual modules.

In practice, this translates into a more predictable repair process, which is important both for workshops specializing in the Mini brand and for users looking for a proven solution to engine electronics problems.

Condition, verification, and use in repairs

The product comes from the secondary market and is marked as used, making it an attractive cost alternative to new controllers while maintaining the manufacturer's original specifications. Such sets are frequently used in professional workshops dealing with vehicle electronics diagnostics and repair, especially in the event of a factory ECU failure or immobilizer problems.

Before installation, a standard diagnostic procedure and verification of the selection for the specific vehicle configuration are recommended. In many cases, such a set allows for significantly shortening the repair time compared to adapting individual modules, which is important from both the workshop's and the end-user's perspective.

Expansion of the control system and selection of Mini electronics

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

When selecting used controllers and modules, it is worth being guided not only by the model designation but also by the functional compatibility of the entire set. Practical tips on choosing electronics from the secondary market, including ECUs and comfort modules, can be found in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which helps to consciously assess the cost-effectiveness and safety of such a solution.

Summary

BMW Mini One R55 R56 N12 1.4 95HP Petrol ECU Kit DME + CAS 3 + Key is a practical, complete engine electronics set designed for petrol versions of the Mini One with the N12 unit. Combining the DME controller, CAS 3 module, and key in one package facilitates the repair process, reduces the risk of immobilizer problems, and represents a rational choice for workshops and users looking for a proven, original solution from the used computers and controllers segment.