Mini Cooper D R55 R56 Diesel W16 1.6 109HP ECU Kit DDE 7806350 CAS3 + Key Manual

The Mini Cooper D R55 R56 Diesel W16 1.6 109HP ECU Kit DDE 7806350 CAS3 + Key Manual is a complete set from the Electronic Control Units and Controllers group, designed for a 1.6 diesel engine with a manual gearbox. The kit includes the DDE engine control unit, the CAS3 module, and a matched key, significantly simplifying the restoration of proper powertrain electronics operation after a failure or when replacing the powertrain unit.

Specifications and technical data

• SKU: 7806350-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7806350
• Substitutable numbers: 13617823934, 7823934, 13617807193, 7807193, 13617806350, 7806350, 0281012722, 0 281 012 722, 61356943834, 6943834, KZ
• Fuel type: Diesel
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose of the DDE CAS3 ECU Kit + Key

The presented kit is dedicated to Mini Cooper D models of the R55 and R56 generation with a W16 1.6 diesel engine producing 109 HP, paired with a manual transmission. The combination of the DDE engine control unit with the CAS3 module and a matched key allows for seamless management of starting, immobilizer, and powertrain unit operating parameters, minimizing the risk of electronic synchronization issues.

For workshops and users, this means the ability to efficiently replace the complete powertrain control system in situations such as control unit damage, immobilizer problems, or the need to match electronics after an engine swap. The completeness of the kit reduces the need for additional programming and shortens vehicle downtime.

Features and Benefits of Using a Complete ECU Kit

The DDE ECU kit with CAS3 and key is responsible for key vehicle processes, including:

• management of fuel injection and diesel engine operation,
• cooperation with the immobilizer system and start authorization,
• communication with other modules in the vehicle network.

Because the components come from a single set, the chance of seamless integration with the car's electrical system increases, and the adaptation process in the vehicle is simplified compared to selecting individual modules from different sources. This solution is particularly beneficial for workshops specializing in Mini electronics and for users seeking a technically consistent set.

Technical Characteristics in the Context of Diesel and Manual Transmission

The control system is designed to work with a diesel engine and a manual gearbox, which is important when selecting the appropriate control unit for a specific powertrain configuration. The engine operating maps, torque control logic, and communication with the powertrain modules are adapted to this specific configuration.

In practice, this means the kit is the correct choice for repairs of Mini Cooper D R55/R56 vehicles in a diesel configuration with a manual transmission, where maintaining the factory powertrain characteristics and compatibility with the existing installation is required.

Condition, Origin, and Workshop Application

The product is from disassembly and is offered as a used part, allowing for a favorable cost-to-functionality ratio while maintaining the original manufacturer's specifications. This type of solution is often chosen by professional workshops and informed users who are looking for original control modules at a reasonable price, while maintaining compatibility with the vehicle's factory electrical architecture.

The kit is suitable for both repairs after electronic failures and for more advanced work, such as engine replacement or complete overhaul of the powertrain control system in a Mini Cooper D R55/R56.

Integration with Other Modules and Service Knowledge

When working with control modules in premium segment vehicles like Mini, it is crucial to understand the dependencies between the engine control unit, comfort module, safety systems, and multimedia. Many solutions used in Mini are similar to those found in BMW, so when planning repairs or electronic upgrades, it is worth expanding your knowledge with practical service tips.

If you want to better understand how to effectively diagnose and repair engine control units and other modules in technologically related vehicles, read the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?, which discusses best practices for working with electronics and used parts.

Expanding Repairs to Other Mini Electronic Control Units and Controllers

If you are planning a comprehensive repair or upgrade of the powertrain electronics area in your Mini and need other components from the same group, such as engine control units, comfort modules, or safety system control units, check the available parts in the Mini Electronic Control Units and Controllers category.

To better assess the cost-effectiveness of using used parts compared to new or aftermarket ones, it is also worth consulting the guide Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?, which discusses cost and quality differences, as well as component matching based on manufacturer markings.