BMW E87 E90 E91 118d 318d M47N2 122HP Engine ECU Kit DDE 7795844 CAS2 Key Manual

BMW E87 E90 E91 118d 318d M47N2 122HP Engine ECU Kit DDE CAS2 Key Manual is a complete set from the Electronic control modules and controllers group, designed for BMW diesel engines with a manual transmission. The set allows for a seamless replacement of the engine control unit along with the CAS2 module and a matched key, which significantly simplifies the process of repairing the engine management system.

Specifications and technical data

• SKU: 7795844-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7795844
• Substitutable numbers: 7795844, 13617795844, 7808124, 13617808124, 7798179, 13617798179, 7801710, 13617801710, 7799854, 13617799854, 7797216, 13617797216, 7803372, 13617803372, 7797496, 13617797496, 0 281 011 631, 0281011631, 6943759, 61356943759, 6943767, 61356943767, 6943756, 61356943756, 6943757
• Fuel type: Diesel
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU DDE CAS2 kit

The presented control set is dedicated to BMW 1 Series E87 and 3 Series E90/E91 models with the 122 HP M47N2 diesel engine and a manual transmission. It includes the DDE engine controller, the CAS2 module, and a key, ensuring consistency of the components responsible for starting authorization and communication within the vehicle's bus system.

A set configured in this way allows for maintaining compatibility between the engine electronics and the immobilizer system, minimizing the risk of vehicle starting issues after replacing the controller. This solution is particularly useful for advanced powertrain repairs or restoring functionality after electronic failures.

Benefits of using a complete engine controller kit

Using a complete ECU kit with a CAS2 module and key offers a number of practical advantages:

• consistency of components responsible for starting and vehicle security,
• reduced need for additional immobilizer programming,
• better compatibility with the vehicle's electrical installation,
• easier diagnostics and configuration compared to replacing a single module.

For workshops specializing in BMW and for informed users, this means a more predictable installation process and a lower risk of software incompatibility between individual modules.

Application in diesel engines with manual transmission

The discussed set has been prepared for diesel units, which is why it is optimized for the specific operation of a diesel engine – injection control, turbocharging, and protection strategies. Additionally, it is intended for vehicles with a manual transmission, which is significant for torque control logic and cooperation with other modules in the vehicle.

Such matching allows for maintaining proper engine operating parameters while facilitating integration with the existing vehicle installation. For the user, this means stable engine performance and correct operation of systems linked to the engine electronics.

Characteristics of the used product

The presented engine controller set is a used item, sourced from dismantling. Such components are often chosen as an economical alternative to new parts, especially in the case of advanced electronics, where the cost of brand-new modules is high. A used ECU DDE set with CAS2 and a key allows for restoring vehicle functionality while maintaining a reasonable repair budget.

For many BMW 1 and 3 Series users, this is a practical solution that enables continued vehicle operation while preserving the original electronic architecture of the car.

Integration with other BMW electronic modules

Modern BMW 3 and 5 Series use an extensive network of electronic modules – from the engine controller and comfort modules to iDrive multimedia systems. Proper selection and installation of the engine controller have a direct impact on the stability of the entire installation. If you want to better understand how to safely use parts from dismantling for BMW electronic repairs, it is worth checking out the article: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models.

Expanding BMW engine control repairs

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, auxiliary modules, or engine management components, check out the available parts in the BMW electronic control modules and controllers category.

Summary

BMW E87 E90 E91 118d 318d M47N2 122HP Engine ECU Kit DDE CAS2 Key Manual is a practical, complete diesel engine control set with a manual transmission, covering key modules responsible for starting and operating the engine. By combining the DDE controller, CAS2 module, and key, it represents an attractive solution for workshops and users looking for proven electronics from dismantling, allowing for an effective and technically correct repair of the engine control system in BMW 1 and 3 Series.