BMW E60 E90 E91 N52 325i 525i Engine ECU Kit DME CAS2 + Key 7552393 Manual

The BMW E60 E90 E91 N52 325i 525i Engine ECU Kit DME CAS2 + Key Manual is a complete engine control kit designed for N52 gasoline engines with a manual transmission. The kit includes the DME module, the CAS2 module, and a matched key, significantly simplifying the adaptation process in the vehicle. This is a practical solution for workshops and users who want to efficiently restore the full functionality of their BMW's engine electronic system.

Specifications and technical data

• SKU: 7552393-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552393
• Substitutable numbers: 7552393, 12147552393, 5WK90075, 6964051, 61356964051
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and Function of the ECU DME CAS2 Kit

The ECU DME CAS2 kit with key is responsible for the comprehensive control of gasoline engine operation and handling start authorization within the CAS2 system. Combining the engine control unit with the immobilizer module and key in one package minimizes the risk of software compatibility issues and security synchronization problems.

This solution is dedicated to BMW E60, E90, and E91 series vehicles with the N52 engine in the 325i and 525i versions, equipped with a manual transmission. This ensures that the workshop has confidence that the control logic is adapted to the characteristics of a manual gearbox, which is important for the correct operation of functions such as ignition cut-off, torque control, and response to sensor signals.

Benefits of Using a Complete DME + CAS2 + Key Kit

Using a complete kit of the engine control unit with the CAS2 module and key offers a range of practical installation and diagnostic benefits:

• maintained consistency between the engine control unit and the immobilizer system,
• reduced need for in-depth programming and key coding,
• easier diagnostics in case of previous starting or module communication problems,
• possibility of faster replacement of a damaged control system in E60/E90/E91 series vehicles.

For professional service centers and advanced users, this means reduced repair time and a lower risk of incompatibility between individual electronic components.

Technical Characteristics in the Context of Engine and Gearbox

The presented kit is designed for N52 gasoline engines, meaning the control logic, operating maps, and sensor handling are adapted to the specifics of this unit. In conjunction with a manual transmission, the control unit supports appropriate torque control strategies, accelerator pedal response, and cooperation with other vehicle modules.

Such adaptation is important for both stable idle operation and smooth acceleration, as well as the correct functioning of onboard systems. The electronic control modules and units in this kit are configured to work with the electrical architecture of the E60/E90/E91 platforms, facilitating integration with the vehicle's existing wiring.

Condition, Origin, and Practical Application in Service

The kit comes from the original BMW line and is part of the Electronic Control Modules and Units category. As a used part, it offers an attractive cost-effective solution for post-accident repairs, replacement of a damaged control unit after an electrical failure, or problems with the CAS2 system. In workshop practice, such a complete set is particularly useful in situations where the existing control unit cannot be programmed correctly or when difficult-to-resolve communication errors occur.

To maximize the potential of this type of solution, it is worth consulting the guide on selecting and installing used electronics. Detailed information on verifying compatibility, operation based on OEM numbers, and practical application examples can be found in the article Used Car Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

Support for Expanding BMW Control Systems

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 control units, auxiliary modules, or engine management systems, check the available parts in the BMW Electronic Control Modules and Units category.

For users interested in the environmental aspect and the use of recycled parts to improve performance and reduce their carbon footprint, the guide Eco-Tuning in Practice: How to Increase Performance While Reducing Your Carbon Footprint with Recycled Parts may be helpful, showing how to consciously select used electronic components in modern vehicles.