BMW E87 LCI E90 118d 318d N47 143HP ECU KIT DDE 7807828 CAS3 + Key Automatic

BMW E87 LCI E90 118d 318d N47 143HP ECU KIT DDE CAS3 + Key Automatic is a complete control kit designed for BMW powertrains with the N47 143 HP engine and automatic transmission. The set includes a DDE engine control unit, a CAS3 module, and a matched key, which allows for seamless operation of the powertrain electronics and the immobilizer. This solution is particularly useful when replacing a damaged control unit or performing advanced vehicle electronics repairs.

Specifications and technical data

• SKU: 7807828-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7807828
• Substitutable numbers: 13617807828, 7807828, 61356943834, 6943834, 13618506281, 13617812501 13617810001 13617811701 13617807143, 7812501 7810001 7811701 7807143, 13617807204 13617812001 13617809001 13617807529, 7807204 7812001 7809001 7807529, 13618508712 13617808403 13617806700, 8508712
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application of the ECU DDE CAS3 + key kit

The presented kit is dedicated to BMW 1 Series E87 LCI and 3 Series E90 models with the N47 143 HP diesel engine, paired with an automatic transmission. Combining the DDE control unit with the CAS3 module and a paired key ensures data security consistency, which facilitates the restoration of full functionality of the starting system and engine control without the need for time-consuming programming from scratch.

By maintaining the completeness of the components, it is possible to recreate the vehicle's original electronic configuration, which is important both for the proper operation of the immobilizer system and for the stable performance of the powertrain under typical operating conditions.

Benefits of using an original BMW control module

The kit belongs to the Electronic control modules and ECUs group, meaning it is designed for precise integration with BMW's factory electrical architecture. The original DDE control unit, together with the CAS3 module, ensures:

• preservation of factory N47 engine performance parameters,
• proper communication with other modules in the vehicle network,
• security system consistency thanks to the matched key,
• the ability to be used as a replacement for a damaged set while maintaining hardware compatibility.

This solution is particularly beneficial for repairs where compatibility with the existing installation and minimizing the risk of communication errors between modules are essential.

Technical characteristics and compatibility

The ECU DDE kit with the CAS3 module has been prepared for vehicles equipped with an automatic transmission. Properly matching the control unit software to the characteristics of the automatic gearbox is crucial for smooth gear shifting, load response, and interaction with driver assistance systems.

The presence of an OEM part number and an extensive list of interchangeable numbers allows for precise verification of compatibility with a specific vehicle configuration, which is important when selecting a part by VIN or manufacturer markings. This helps reduce the risk of purchasing the wrong module and speeds up the repair process.

Condition, verification, and preparation for installation

The offered kit is a used item, which in workshop practice often represents a reasonable compromise between repair costs and maintaining the vehicle's original specifications. Modules of this type are frequently chosen for post-accident repairs, after electronic failures, or when dealing with immobilizer issues, where it is necessary to replace several cooperating components simultaneously.

Before installation, a standard diagnostic procedure and verification of vehicle compatibility are recommended, as well as consultation with an automotive electrician or a BMW electronics specialist to properly adapt the kit to the specific car.

Technical support and selecting the right ECU

Selecting the appropriate engine control unit, CAS module, and key kit requires taking into account manufacturer markings, software versions, and vehicle equipment configurations. To better understand the principles of selecting used control units and sensors, as well as hardware and software compatibility issues, it is worth checking the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

If you are planning a comprehensive repair or upgrade of your BMW's engine electronics and security system and need other components from the same group, such as additional control units, comfort modules, or powertrain management systems, check the available parts in the BMW electronic control modules and ECUs category.