BMW E81 E87 LCI 118d E90 318d N47 143HP Diesel ECU KIT DDE 7810001 CAS3 + Key

BMW E81 E87 LCI 118d E90 318d N47 143HP Diesel ECU KIT DDE CAS3 + Key is a complete electronic set designed for BMW diesel systems with the 143 HP N47 engine. The kit includes a DDE engine control unit, a CAS3 module, and a matched key, which facilitates professional replacement of drivetrain electronics in vehicles with an automatic transmission. Thanks to the factory BMW architecture, the set allows for consistent management of the engine unit and the start authorization system.

Specifications and technical data

• SKU: 7810001-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810001
• Substitutable numbers: 7810001, 13617810001, 8506281, 13618506281, 7812501, 13617812501, 7811701, 13617811701, 7807143, 13617807143, 7807204, 13617807204, 0281014239, 0 281 014 239, 9226238, 61359226238
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and compatibility

The presented ECU DDE kit with the CAS3 module and key is dedicated to BMW 1 Series E81 / E87 LCI 118d and BMW 3 Series E90 318d models with the 143 HP N47 engine. The kit's design is prepared for use with diesel powertrains and automatic transmissions, which is important when selecting the appropriate controller for a specific vehicle configuration. The set is particularly useful when replacing a damaged engine controller or when it is necessary to match a complete set of starting electronics within a single vehicle.

Function of the DDE controller and CAS3 module

The DDE controller is responsible for precise management of the diesel engine, including fuel dosing, boost control, emission control, and cooperation with the automatic transmission. The CAS3 module acts as the central element of the authorization system – it communicates with the key and the engine controller, supervising the start procedure and anti-theft security. The presence of a matched key in the set reduces the need for time-consuming programming from scratch, which in many cases speeds up the process of starting the vehicle after repair.

Benefits of using a complete ECU KIT

Using a complete set of the DDE controller, CAS3 module, and key in BMW vehicles with the N47 engine brings a number of practical benefits:

• consistency of the drivetrain electronics and immobilizer system within a single set,
• reduction of the risk of incompatibility between the engine controller and the CAS module,
• facilitation of workshop work during diagnostics and adaptation of a used controller,
• possibility of restoring the correct operation of the diesel engine unit after an electronics failure.

As an item in the Electronic control modules and controllers category, the set is intended for users and service centers that expect a technically matched solution for a specific BMW configuration with an automatic transmission.

Product characteristics and condition

The offered ECU KIT comes from a BMW vehicle and is classified as a used part, which allows for economical repair while maintaining the original electronic architecture. The set includes three key components: the DDE engine controller, the CAS3 module, and the key, which enables a comprehensive replacement of the control and start authorization system in one service process. This type of solution is particularly valued in the case of advanced diesel systems, where compatibility between individual modules has a direct impact on engine stability and correct communication within the vehicle network.

Technical support and additional information

When selecting a used ECU kit for a BMW with a diesel engine, it is worth paying attention to the compatibility of the controller generation, fuel type, and transmission type, as well as whether the CAS module and key are included. For users who want to better understand the specifics of used automotive electronics and the principles of their proper selection, the following article will be helpful: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

If you are planning a comprehensive repair or upgrade of the engine control area in your BMW and need other elements from the same group, such as engine controllers, drivetrain management modules, or auxiliary system controllers, check the available parts in the BMW electronic control modules and controllers category.