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 a complete engine control unit kit designed for selected BMW 1 and 3 Series diesel models. The set includes a DDE engine controller, a CAS2 module, and a matched key, which facilitates the restoration of proper powertrain operation following an electronics failure. This solution is particularly useful when replacing a damaged controller or performing advanced control system repairs.

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 function of the ECU DDE CAS2 kit

The presented kit is dedicated to BMW 1 Series E87 and 3 Series E90/E91 vehicles with 118d and 318d engines, where the DDE controller is responsible for precise management of the diesel unit's operation. Combining the engine controller with the CAS2 module and a properly coded key ensures the integrity of the immobilizer system, ignition, and communication with other vehicle modules. This allows for the efficient restoration of the original powertrain logic after the factory set has been damaged.

Benefits of using a complete kit

Using a complete ECU kit with a CAS2 module and key reduces the need for complex programming and matching of individual components in the workshop. In practice, this means:

• easier integration with the vehicle's existing electrical installation,
• data consistency between the engine controller and the security system,
• reduced risk of software conflicts between modules,
• faster diagnostics and vehicle startup process after repair. For workshops specializing in the BMW brand, such a kit provides a convenient service solution, allowing them to focus on correct vehicle configuration rather than time-consuming matching of individual modules.

Category: Electronic control modules and controllers

The product belongs to the Electronic control modules and controllers group, which are components responsible for advanced management of vehicle sub-assemblies. In the case of the DDE controller, it is crucial to correctly process sensor signals, control fuel dosage, boost pressure, and cooperate with safety and comfort systems. The CAS2 module is responsible for ignition authorization, communication with the key, and integration with the rest of the body electronics, which has a direct impact on the safety and functionality of the car.

Condition and application in service practice

The kit comes from a used vehicle, which is a typical solution for original BMW electronic modules, especially when repairing older generations of the 1 and 3 Series. For workshops and users, this means the ability to use original components at a more attractive price than new parts, while maintaining proper compatibility with the electrical architecture of a given model. Combined with appropriate diagnostics and vehicle configuration, this allows for effectively restoring the efficiency of the engine control system.

Selection and compatibility in the BMW control system

When selecting the ECU DDE CAS2 kit with a key, it is crucial to match it to the specific engine version and body generation. This set has been designed for 118d and 318d diesel units in E87, E90, and E91 bodies, which allows for maintaining compliance with the factory vehicle configuration. The presence of the OEM part number and interchangeable numbers in the technical specification facilitates verification of compatibility with your car and minimizes the risk of purchasing an unsuitable module. 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 engine controllers, comfort modules, or security systems, check the available parts in the BMW electronic control modules and controllers category. For a better understanding of how original electronic modules influence the character and behavior of a premium class car, it is worth reading an article describing the role of factory components in maintaining driving characteristics and comfort – details can be found in the material Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.