BMW 1 3 Series E87 E90 E91 118d 318d Engine ECU Kit DDE CAS2 Key 7795844

BMW 1 3 Series E87 E90 E91 118d 318d Engine ECU Kit DDE CAS2 Key is an engine control set from the Electronic control modules and controllers category, designed for selected BMW 1 and 3 Series models with diesel engines. The kit includes the DDE engine control unit, the CAS2 module, and a key, which facilitates seamless integration with the vehicle's electronics and reduces the risk of immobilizer-related issues.

Specifications and technical data

• SKU: 7795844-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7795844
• Substitutable numbers: 13617808124, 7808124, 13617803372, 7803372, 13617801710, 7801710, 13617799854, 7799854, 13617798179, 7798179, 13617797496, 7797496, 13617797216, 7797216, 13617795844, 7795844, Control Unit
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented ECU DDE kit with CAS2 and key has been developed for BMW 1 Series E87 118d and 3 Series E90/E91 318d models that utilize electronic diesel engine management. Integrating the engine control unit with the CAS2 module and a matched key allows for maintaining the consistency of the security system and starting logic.

This type of solution is particularly useful when replacing a damaged controller, resolving immobilizer communication issues, or when it is necessary to restore the proper operation of the injection and starting system without the time-consuming adaptation of multiple separate components.

Function of the ECU DDE + CAS2 + key kit

The engine control set is responsible for:

• coordinating the operation of the powertrain via the DDE controller,
• cooperating with the vehicle's security system via the CAS2 module,
• authorizing the start-up using the matched key.

As a result, the entire system forms a coherent, factory-standard authorization chain, which helps to limit errors related to software, coding, or transponder incompatibility. For workshops and users, this means a more predictable installation process and a higher chance of quickly restoring full vehicle functionality.

Benefits of using an original BMW module

The original set from the Electronic control modules and controllers group ensures compatibility with the vehicle's electrical architecture and factory communication standards within the CAN network. In practice, this translates into:

• better cooperation with other controllers in the car,
• preservation of factory diagnostic functions,
• easier maintenance using dedicated BMW service tools.

A used, original module often allows for restoring the proper operation of the engine and starting system at a lower cost than purchasing a new set, while maintaining performance characteristics consistent with the manufacturer's specifications.

Condition and service application

The product is in the Electronic control modules and controllers category and is intended primarily for service applications: replacing a damaged controller, troubleshooting immobilizer issues, or restoring communication within the controller network. This type of kit is particularly valued by workshops specializing in the BMW brand, as it allows for reduced diagnostic and installation time compared to sourcing individual components from different sources.

Expanding the control system in a BMW

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

For a comparison of solutions used in other premium brands and the impact of original electronic modules on a car's character, it is worth reading the blog article Audi and pure emotion. How do used parts help maintain the brand's DNA?, which shows how important the consistency of electronics and equipment is in modern cars.