BMW E60 E90 N52 325i 525i 218HP Engine ECU Kit DME 7555361 CAS2 Key Automatic

BMW E60 E90 N52 325i 525i 218HP Engine ECU Kit DME CAS2 Key Automatic is a factory electronic control module designed for N52 petrol engines with 218 HP, paired with an automatic transmission. This component from the Electronic control modules and controllers category ensures precise management of engine operation, injection parameters, and ignition, which translates into stable performance and proper interaction with the vehicle's other electronic systems. By using an original controller, it is possible to maintain the factory performance characteristics of the powertrain in BMW 3 Series E90 and 5 Series E60 models.

Specifications and technical data

• SKU: 7555361-8
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7555361
• Substitutable numbers: 7555361, 12147555361, 6943771, 61356943771, 6981416, 61356981416, 6943791, 61356943791, 6943786, 61356943786, 6943775, 61356943775, 6943766, 61356943766, 6964051, 61356964051
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented engine controller kit is dedicated to N52 petrol engines used in BMW 325i and 525i models with 218 HP. The module is responsible for coordinating key engine operating parameters, such as fuel dosage, ignition timing, and interaction with the automatic transmission, which allows for maintaining proper dynamics, smooth acceleration, and correct response to load.

In the case of modern petrol engines, the use of the appropriate control computer is essential to maintain stable idle speed, proper operation of safety systems, and compliance with factory control maps. Using an original module from the same family reduces the risk of communication errors in the vehicle's network and facilitates adaptation during programming.

Compatibility with the drivetrain

This control computer has been designed to work with a petrol engine and an automatic transmission, which is important when selecting the correct ECU for a specific vehicle configuration. Using a module intended for a given drivetrain version facilitates:

• proper communication with the automatic transmission module,
• maintaining factory gear shift points,
• consistent operation of driver assistance systems,
• reducing the need for electrical system modifications.

An additional advantage is the ability to utilize the existing vehicle electrical architecture, which promotes a near plug-and-play installation after appropriate software matching.

Kit characteristics and service application

The offered engine controller kit is a solution intended primarily for service applications in BMW E60 and E90 series vehicles with the 218 HP N52 unit. In practice, this means the ability to restore the efficiency of the control system in the event of a failure of the existing module, damage due to power surges, or communication problems in the vehicle's network.

Choosing an original component from the Electronic control modules and controllers category allows for maintaining compliance with the vehicle's factory configuration, which facilitates diagnostics, coding, and subsequent software updates. This solution is particularly beneficial for workshops specializing in the BMW brand and users who expect performance as close to factory standards as possible.

Benefits of using an original BMW controller

Using an original control computer in the N52 engine brings a number of practical operational benefits:

• Consistency with factory configuration – the module is designed for a specific unit and drivetrain version, which promotes stable engine operation.
• Simplified diagnostics – compatibility with factory BMW diagnostic tools allows for faster identification of any irregularities.
• Software adaptation capability – the controller can be matched to a specific vehicle during coding and programming at a specialized service center.
• Reduced risk of incompatibility with other electronic modules in the vehicle.

Due to the nature of the product as a used item, it is a cost-effective solution compared to new modules, while maintaining proper functionality after correct installation and configuration.

Selection, installation, and additional information

Before purchasing, it is recommended to verify the compatibility of the controller with the specific BMW E60 or E90 version, the N52 engine configuration, and the automatic transmission used. Proper selection of the module and its subsequent coding to the vehicle is best entrusted to a workshop with experience in working with BMW electronics, which minimizes the risk of problems with starting or communication in the vehicle's network.

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, engine management modules, or systems working with the ECU, check the available parts in the BMW electronic control modules and controllers category.

To better understand when choosing a used engine controller is justified and what to pay attention to when selecting one, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?