Mini Cooper R55 R56 LCI 1.6 N16 122HP Engine Unit ECU DME 7615981 2 Keys CAS3

Mini Cooper R55 R56 LCI 1.6 N16 122HP Engine Unit ECU DME 2 Keys CAS3 is a set from the Electronic control modules and controllers group, including the DME engine control unit and the CAS3 module with two keys, designed for the 1.6 N16 122 HP petrol engine with an automatic transmission. The set constitutes a coherent package of engine electronics and immobilizer, facilitating professional repair or replacement of the control system in Mini vehicles.

Specifications and technical data

• SKU: 7615981-4
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7615981
• Substitutable numbers: 7615981, 12147615981, 8652745, 12148652745, 7638322, 12147638322, 7607685, 12147607685, 7620987, 12147620987, 8625068, 12148625068, 8600124, 12148600124, 7627520, 12147627520, 7619335, 12147619335, 7643771, 8617050, 12148617050, 0261S06541, 0 261 S06 541, 9221719, 61359221719
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU DME + CAS3 set

The presented set has been designed as a central element for managing engine operation and start authorization in Mini vehicles with a 1.6 N16 petrol engine and automatic transmission. The DME controller is responsible for precise control of injection, ignition, and auxiliary equipment operation, while the CAS3 module integrates immobilizer functions and key handling, ensuring consistent operation of the electronic system.

The presence of two keys in the set allows for maintaining full functionality of the access and start system, which significantly simplifies the adaptation process in the vehicle and reduces the need for additional programming.

Benefits of using the complete Mini package

Using a complete engine control unit set with the CAS3 module and keys brings a number of practical benefits for the workshop and the user:

• consistency of engine electronics and immobilizer within a single package,
• reduction of the risk of software conflicts between the controller and the CAS module,
• easier diagnostics and configuration thanks to the maintained compatibility of components,
• possibility of effective vehicle repair after ECU failure or problems with the start system.

For Mini cars with a petrol engine and automatic transmission, such a set is particularly useful for major electronic faults, where replacing a single module does not solve the problem or generates difficulties with matching.

Application in vehicles with a petrol engine and automatic transmission

The discussed set is intended for configurations where the petrol engine works with an automatic transmission. This means that the control logic takes into account cooperation with the transmission mechatronics, which is important for gear shift smoothness, load response, and the powertrain's operating strategy.

In practice, this translates into stable operation of the powertrain, correct communication via the data bus, and the ability to use factory comfort and safety functions linked to the engine electronics and the CAS3 module.

Professional use in service and diagnostics

The ECU DME set with the CAS3 module and keys is particularly useful in specialized Mini electronics services, where the ability to perform quick and predictable repairs is essential. The set allows for:

• restoring a functional engine control system after damage to the original controller,
• solving problems with the immobilizer and key authorization,
• testing and diagnostics in workshop conditions on the vehicle or on a test bench.

Thanks to this, it is a practical solution both for routine repairs and for more complex cases related to powertrain electronics.

Condition, origin, and characteristics as a used part

The product comes from dismantling and is a used item, which in the case of original Mini modules often allows for maintaining factory build quality and compatibility with the vehicle's installation. For many users and workshops, this is a reasonable compromise between cost and functionality, especially when repairing older Mini Cooper R55 and R56 LCI models.

More practical tips on selecting and installing used engine controllers and comfort modules can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Expanding the control system in Mini – related components

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

If you are considering a choice between a used original component and a replacement, the practical tips from the guide may be helpful: 5 reasons why a used OEM part is a better choice than a replacement.