BMW E60 E90 E91 LCI 325i 525i N53 218HP ECU Kit DME 7594305 CAS3 + Key Manual

BMW E60 E90 E91 LCI 325i 525i N53 218HP ECU Kit DME CAS3 + Key Manual is a complete control kit designed for 218 HP N53 engines in facelifted BMW 3 and 5 series models. It includes the engine control unit, CAS3 module, and a matched key, which facilitates the restoration of proper electronic system operation after a failure or engine replacement. Thanks to the consistency of the components, the kit allows for seamless integration with the wiring of a vehicle equipped with a manual transmission.

Specifications and technical data

• SKU: 7594305-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7594305
• Substitutable numbers: 7594305, 5WK93651, 12147616431, 7616431, 61359147216, 9147216
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application of the ECU DME CAS3 + Key kit

The presented kit is intended for BMW cars with the 218 HP N53 engine, used in models such as the 325i and 525i after the facelift (LCI). Combining the DME controller with the CAS3 module and key ensures immobilizer data consistency, which is crucial when replacing electronics in vehicles with advanced security systems. The completeness of the kit significantly reduces the need for additional programming and minimizes the risk of starting issues.

Electronic control modules and controllers – characteristics

The product belongs to the Electronic control modules and controllers group, responsible for managing engine operation and starting authorization. In practice, this means controlling combustion parameters, cooperating with engine sensors, and communicating with other modules in the vehicle. The DME kit with CAS3 and key allows for maintaining the consistency of these functions, which is particularly important in modern BMW designs where the engine controller and access system are logically linked.

Benefits of using a complete kit

Using a complete ECU kit with a CAS3 module and key in BMW cars with an N53 engine offers a number of practical benefits:

• immobilizer data consistency between the engine controller, CAS3 module, and key,
• reduced scope of coding compared to installing individual, unpaired components,
• preservation of the vehicle's security system integrity,
• better compatibility with the electrical system in cars with a manual transmission.

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

Manual transmission compatibility

The kit is designed for vehicles equipped with a manual transmission. This is significant for both the engine controller configuration and communication with other modules in the vehicle. Proper matching to the transmission type facilitates maintaining correct engine operating parameters and cooperation with driver assistance systems.

Condition and compatibility verification

The components included in the kit are sourced from dismantling and are offered as used, which allows for economical vehicle repair while maintaining original BMW specifications. Before purchasing, it is recommended to verify compatibility with the specific N53 engine version, as well as the model year and equipment configuration, to ensure proper cooperation with the existing installation.

Expansion of the control system in BMW

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

More about the role of original modules in modern cars

In premium vehicles, such as BMW or Audi, the consistency of electronics has a direct impact on the car's character and how it responds to driver inputs. If you are interested in how original modules and controllers affect vehicle behavior and why it is worth choosing proven parts from dismantling, read the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which clearly demonstrates the importance of properly selected electronic components in modern designs.