BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key 7552393 Automatic

ECU DME CAS2 Kit with Key for BMW 3 and 5 Series with N52 Engine is a product from the Electronic Control Units and Controllers category, designed for vehicles equipped with an automatic transmission. This kit is an original BMW solution that ensures seamless operation of engine control, immobilizer, and key authorization in compatible E60, E90, and E91 models.

Specifications and technical data

• SKU: 7552393
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552393
• Substitutable numbers: 12147577970, 7577970, 12147552393, 7552393, 61356964051, 6964051, 5WK90075
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application of the ECU DME CAS2 Kit with Key

The presented control kit is intended for BMW 3 and 5 Series cars with the N52 engine that require the replacement of the complete engine control system, including the CAS2 module and a matched key. This type of solution is particularly useful for:

• replacing a damaged DME engine control unit,
• issues with key authorization or communication with the CAS2 module,
• the need to restore a coherent electronics set after accident repairs or engine replacement.

By using a complete kit, it is possible to maintain consistency between the engine control unit, security module, and key, which facilitates further vehicle diagnostics and configuration.

Technical Characteristics and Vehicle Integration

The ECU DME CAS2 Kit with Key has been designed to work with an automatic transmission, which is important when selecting the appropriate control unit for a specific drivetrain configuration. The kit should be treated as an integrated electronic system where:

• the DME control unit is responsible for managing the N52 engine's operation,
• the CAS2 module handles immobilizer and start authorization functions,
• the key is linked to the CAS2 module, enabling correct vehicle startup.

This combination of components reduces the risk of incompatibility between individual modules and simplifies the vehicle adaptation process on the electronics side.

Condition, Origin, and Benefits of Using an Original BMW Module

The offered kit comes from a BMW vehicle and is a used product, allowing for an economical replacement of the factory control system while maintaining operating characteristics close to the original configuration. Using an original module from the same control unit family ensures:

• compatibility with the electrical architecture and communication buses in E60, E90, E91 models,
• the possibility of further configuration and coding using standard BMW service tools,
• consistent operation of the security system based on CAS2 and a matched key.

Before installation, it is recommended to verify compatibility with the specific equipment version and perform the appropriate programming and synchronization procedures at a specialized service center.

Installation and Operational Tips

To fully utilize the potential of the offered kit, it is worth paying attention to several technical aspects:

• selecting the kit for the correct engine and transmission type,
• proper connection of electrical harnesses according to the vehicle's wiring diagram,
• performing adaptation procedures for the engine control unit and CAS2 module,
• checking for error codes in the control unit memory after the first startup.

This approach helps to reduce the risk of problems with starting, communication between modules, and the operation of systems related to the drivetrain electronics.

Expanding Knowledge and Selecting Other BMW Modules

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

For those interested in the broader context of using original used electronic components in premium cars, an article describing how to preserve the brand's character when replacing control and equipment elements may be helpful – find more information in the material Audi and Emotion in Pure Form. How Used Parts Help Maintain the Brand's DNA?.

If you work with newer BMW units and want to better understand component selection in the context of power, compatibility, and hardware configuration, it is worth consulting the practical Global Parts guide – check the article BMW B58 Code, or 340 HP from the Aftermarket – Pre-Purchase Checklist for Turbocharger and Intercooler for BMW 3 Series (G20), which clarifies key issues related to part selection in modern drivetrain systems.