BMW 3 Series E90 E91 LCI N47N 320d ed 163HP ECU KIT DDE CAS 3 Key 8518269 Manual

BMW 3 Series E90 E91 LCI N47N 320d ed 163HP ECU KIT DDE CAS 3 Key Manual is a complete engine control and immobilizer kit designed for BMW 3 Series E90/E91 LCI (facelift) models equipped with the N47N 320d ed engine. The set includes the DDE engine control module, CAS 3 module, and a matched key, ensuring seamless, factory-standard compatibility between all electronic system components. This solution is particularly useful when replacing a faulty ECU or performing advanced drivetrain electronics repairs.

Specifications and technical data

• SKU: 8518269-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8518269
• Substitutable numbers: 8512047, 13618512047, 13618519668, 8519668, 13618518269 8518269, 0281018552, 0 281 018 552, 61359262361, 9262361
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose of the ECU DDE CAS 3 Key kit

This kit is dedicated to BMW 3 Series E90/E91 LCI vehicles with the N47N 320d ed diesel engine (163HP), equipped with a manual transmission. The combination of the DDE controller, CAS 3 module, and key ensures immobilizer data consistency, which simplifies installation and reduces the need for additional programming compared to replacing individual components.

A kit configured in this way allows for the restoration of proper engine start and control system operation in the event of electronics failure, key authorization issues, or damage resulting from electrical system tampering.

Benefits of using a complete control unit kit

Using a complete ECU DDE kit with CAS 3 module and key offers a range of practical service benefits:

• immobilizer data consistency between the engine controller, CAS module, and key,
• reduced risk of software conflicts when starting the vehicle,
• streamlined workshop diagnostics and installation,
• faster vehicle recovery following an electronics failure.

For the user, this means a more predictable repair process and a higher chance of stable, consistent drivetrain performance after replacing electronic components.

Characteristics of manual transmission operation

The kit is configured for a manual transmission type, which is essential for torque control logic, interaction with driver assistance systems, and communication with other vehicle modules. As a result, the DDE controller operates within the vehicle's electrical system according to the factory specifications for this drivetrain version.

Proper matching of the controller to the transmission type is crucial for the correct operation of functions such as traction control, safety systems, and engine load response; therefore, choosing a kit compatible with the vehicle's configuration has a direct impact on driving comfort and predictability.

Condition, verification, and service application

The components included in this kit are sourced from the secondary market, allowing for cost-effective repairs while maintaining the characteristics of original BMW electronics. This type of solution is frequently chosen by brand-specialized workshops when it is necessary to replace a set of control modules rather than performing time-consuming repairs on individual components.

To better understand when choosing a used control unit kit is justified and how to properly select electronics for a specific vehicle configuration, it is worth reading our guide: Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

BMW electronic control modules and controllers – expansion and selection

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

If you would like to learn more about the advantages of using original secondary market components and their impact on repair safety and durability, the following article will be helpful: Quality assurance and OEM safety – why used original car parts are the best choice for your vehicle?.