BMW E92 Engine Module ECU Kit DDE CAS3 Key 335d 306D5 M57N2 7810980 Automatic

BMW E92 Engine Module ECU Kit DDE CAS3 Key 335d 306D5 M57N2 is a complete set from the Electronic control modules and controllers group, designed for the advanced BMW diesel powertrain with an automatic transmission. The kit includes the DDE engine control unit, the CAS3 module, and the key, which facilitates a consistent configuration of the vehicle's electronics after replacement or upgrade.

Specifications and technical data

• SKU: 7810980-7
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810980
• Substitutable numbers: 13617810980, 7810980, 9147220, 61359147220, 6954720, 0281015241, 0 281 015 241
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the control kit

The presented kit is dedicated to the BMW E92 series in the 335d version with the M57N2 unit, where the DDE controller is responsible for precise engine management, and the CAS3 module integrates start authorization functions and key handling. This combination of components allows for maintaining software and security logic consistency, which is crucial for professional repairs or electronics adaptation. Thanks to its compatibility with an automatic transmission, the kit works with the powertrain as intended by the factory, supporting smooth gear shifting, appropriate load response, and stable operation in both comfort and dynamic modes.

Benefits of using a complete DDE + CAS3 + key set

Using a complete control kit in a BMW E92 335d provides a number of practical service and operational benefits:

• consistency of engine electronics and the immobilizer system,
• easier configuration when replacing the controller in vehicles after accident repairs or upgrades,
• preservation of the operating characteristics typical for the M57N2 unit,
• matching the logic of the automatic transmission operation. A set configured in this way helps reduce the risk of problems with starting, communication between modules, and errors resulting from electronic mismatch.

Application in a powertrain with an automatic transmission

In BMW vehicles with the M57N2 engine and automatic transmission, the DDE controller works with modules responsible for gear shifting, torque control, and drivetrain protection strategies. The kit with the CAS3 module and key ensures that communication between the engine controller, transmission, and security system proceeds according to factory specifications. Such a solution is particularly important for:

• restoring configuration after engine or transmission replacement,
• electrical system repairs after damage,
• professional electronics adaptations in specialized workshops.

Product characteristics and condition

The offered kit comes from a BMW vehicle and is part of the original electronic architecture. As a part from the Electronic control modules and controllers category, it has been designed to operate in demanding thermal and electrical conditions typical for the engine bay and vehicle interior. The product is used, which in workshop practice often represents a reasonable compromise between repair costs and maintaining the manufacturer's original specifications, especially in the case of advanced engine controllers and security modules.

Selection support and additional information

When selecting such a kit, it is crucial to verify compatibility with the specific engine version, model year, and vehicle equipment configuration. In case of doubt, it is worth consulting an automotive electrician or a workshop specializing in the BMW brand to properly plan the coding and adaptation of the modules. If you are planning a comprehensive repair or upgrade of your BMW's engine electronics and need other components from the same group, such as controllers, security modules, or engine management units, check the available parts in the BMW electronic control modules and controllers category. To better understand how original control modules affect the handling characteristics and behavior of a premium car, it is worth reading the article on our blog: Audi and pure emotion – how precise modules and original controllers help maintain the brand's DNA. If you are considering using original used electronic components in your car and want to take care of the vehicle's future value, the following guide may also be helpful: original used parts and car resale value.