BMW E60 LCI E90 E91 E92 325d 525d M57N2 Engine ECU KIT DDE 7805288 CAS3 + Keys

BMW E60 LCI E90 E91 E92 325d 525d M57N2 Engine ECU KIT DDE CAS3 + Keys is a complete set from the Electronic control modules and controllers group, designed for the BMW powertrain with the M57N2 engine. It includes the DDE engine control unit, the CAS3 module, and matched keys, which facilitates the professional replacement of control electronics in BMW 3 and 5 series vehicles.

Specifications and technical data

• SKU: 7805288-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805288
• Substitutable numbers: 13618509034, 8509034, 13617811151 13617806380 13617809941, 13617806987 13617806152 13618506951, 8506951 7806152 7806987, 7809941 7806380 7811151, 13617805288 13617808314 13617804845, 7804845, 7808314, 7805288, 61356943814, 6943814, 0281012994, 0 281 012 994
• Category: ECUs & Computer Modules

Purpose of the DDE CAS3 ECU kit + keys

The presented control set is dedicated to BMW 3 series E90, E91, E92 and 5 series E60 LCI models with the M57N2 diesel engine in 325d and 525d versions. Combining the DDE controller with the CAS3 module and assigned keys allows for consistent operation of the starting system, immobilizer, and engine management, which is particularly important when replacing electronics after a failure or during extensive repairs.

Benefits of using a complete kit

Using a complete ECU kit with CAS3 and keys significantly simplifies the service process compared to replacing individual components. The engine controller, comfort module, and immobilizer are already synchronized, which reduces the need for time-consuming programming and minimizes the risk of starting issues or communication problems between modules. For workshops specializing in BMW, this means more predictable turnaround times and greater repeatability of repair results.

The product belongs to the Electronic control modules and controllers category, making it ideal for the needs of advanced engine system repairs, diagnostics, and restoring full vehicle functionality after electronic damage.

Technical characteristics and compatibility

The set has been designed to work with the M57N2 engine, used in popular 325d and 525d configurations. It is responsible for precise control of injection, engine accessories, and integration with the vehicle's safety and comfort systems. The presence of dedicated interchangeable numbers allows the set to be matched to various equipment variants within the indicated BMW generations, which increases flexibility in workshop practice.

As an original BMW part, the set maintains the factory connection architecture and system logic, which facilitates integration with the existing vehicle electrical installation and cooperation with factory diagnostic tools.

Condition, service application, and installation recommendations

The set is offered as used, which provides a cost-effective solution while maintaining the manufacturer's original specifications. This type of component is particularly useful in situations where the engine controller has been damaged, there are problems with the CAS3 module, or there are irregularities in the immobilizer's operation, and repairing individual elements is uneconomical or technically difficult.

Installation in a specialized service center with experience in BMW electronics and appropriate diagnostic software is recommended. This allows for proper adaptation of the set to the specific vehicle, verification of communication on data buses, and checking the correct operation of all functions related to starting and engine control.

Expansion of service work and additional resources

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

For a better understanding of how original electronic modules affect the driving characteristics and behavior of a premium class car, it is worth reading the article on our blog: Audi and pure emotion. How do used parts help maintain the brand's DNA?. Although the description concerns a different brand, it shows how important it is to use original controllers and modules in modern cars.