Mini One R50 W10 90HP Engine ECU Kit DME 7545789 + EWS + Keys Manual

Mini One R50 W10 90HP Engine ECU Kit DME + EWS + Keys Manual is an original electronic control module designed for the 90 HP W10 unit in the MINI One R50 model with a manual transmission. This specialized controller from the Electronic control modules and ECUs category is responsible for precise engine management, ensuring stable driving characteristics and proper communication with other vehicle systems. Thanks to its factory OEM design, it is the right choice for professional powertrain repairs.

Specifications and technical data

• SKU: 7545789-10
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7545789
• Substitutable numbers: 7545789, 12147545789, 7557395, 12147557395, 7527610, 12147527610, 7514587, 12147514587, 7513981, 12147513981, 7520019, 12147520019, 7539808, 12147539808, 7513983, 12147513983, 7553735, 12147553735, 7512798, 12147512798, 12147542310, S83293, S122237002, 61356941986, 6941986
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine ECU

The presented engine ECU is dedicated to the W10 petrol unit in the MINI One R50, paired with a manual transmission. The module monitors key engine operating parameters, such as fuel dosage, ignition timing, and response to sensor signals, which translates into predictable performance and proper engine operation.

As an item from the Electronic control modules and ECUs category, the controller integrates with the vehicle's electrical system and other modules, enabling the cohesive operation of the entire powertrain. Using the correct engine ECU is particularly important after replacing the engine, repairing the wiring, or when experiencing issues with starting and idle stability.

Benefits of using an original Mini module

Choosing an original Mini controller ensures:

• factory fitment for the W10 engine in the MINI One R50,
• proper compatibility with the manual transmission,
• preservation of the engine's factory operating parameters,
• consistency with other electronic modules in the vehicle.

As a result, the engine ECU can be used both as a replacement part after a failure and during a comprehensive powertrain rebuild, when you want to maintain factory driving characteristics and proper communication within the vehicle's network.

Selection and compatibility in service practice

When selecting a controller for the MINI One R50, it is crucial to match it to the specific engine version and transmission type. This engine ECU has been designed to work with the 90 HP W10 unit and a manual transmission, which facilitates its integration with the factory wiring harness and accessories. In service practice, this reduces the need for wiring modifications and shortens installation time.

The module should be treated as a component intended for professional service – especially in situations where the existing controller has failed, diagnostic communication issues occur, or engine-related errors appear. Using the appropriate engine ECU helps restore stable engine operating parameters and facilitates further diagnostics.

Condition, origin, and use in repairs

The offered engine ECU comes from dismantling and is a used part, making it an attractive cost-effective solution while maintaining the factory OEM design. Such modules are frequently used in specialized automotive electronics workshops, where hardware compatibility with the original vehicle installation is essential.

Before installation, it is recommended to perform standard service procedures, such as verifying the electrical installation, checking grounds and power supply, and – if necessary – properly matching the controller to the specific vehicle according to the procedures used in the given workshop.

Expansion of the control system and technical knowledge

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 additional controllers, management modules, or diagnostic support systems, check out the available parts in the Mini electronic control modules and ECUs category.

To deepen your knowledge about the operation of engine ECUs, integration with other modules, and the use of parts from dismantling in advanced electronics repairs, it is worth reading the article on our blog: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?. Although it mainly concerns BMW, the principles of module operation and good service practices described there are also useful when handling controllers in other brands.

If you are interested in a broader context of MINI modifications in terms of performance and driving characteristics, the material comparing solutions used in sports versions may also be helpful: Go-Kart Feeling XXL: used N18 turbocharger vs. B48 – what to choose for a Mini Cooper S?, which shows how important the proper cooperation of engine accessories with the control electronics is.