BMW 3 Series E90 320si 173HP DME 7560955 Petrol N45 ECU Kit CAS2 + Key Manual

The BMW E90 320si N45 CAS Key Module Computer is a component from the Electronic Control Units and Controllers category, designed for the electronic system of the BMW 3 Series E90 with an N45 engine. This is a solution for users who need a tested CAS module that works with a gasoline engine and manual transmission to restore the proper functioning of the vehicle's starting and security systems.

Specifications and technical data

• SKU: 7560955-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7560955
• Substitutable numbers: 12147560956, 7560956, 12147560955, 7560955, 0261201108, 0 261 201 108, 61356943791, 6943791
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and Function of the CAS Module in BMW E90 320si N45

The CAS Key Module Computer in the BMW E90 320si N45 is responsible for key authorization, engine start control, and cooperation with the vehicle's security systems. In conjunction with the car's electrical system, it ensures correct communication between the key, ignition switch, engine control unit, and other comfort modules.

In case of problems with starting the vehicle, CAN network communication errors, or incorrect key recognition, replacing the CAS module with a suitable component from the same family is one of the basic service procedures used in BMW 3 Series E90 vehicles.

Compatibility, Interchangeable Numbers, and Integration with the Electrical System

The offered module comes from the BMW line and is designed to work with a gasoline engine and manual transmission, which is important for matching the specific vehicle configuration. The component has an assigned OEM part number and a set of interchangeable numbers, allowing it to be used as a replacement within the same model platform, provided the car's configuration is compatible.

Before purchasing, it is advisable to verify the module's compatibility with your BMW E90 320si N45, especially regarding:

• engine type (gasoline),
• transmission type (manual),
• family of electronic control units used.

Such matching facilitates installation and reduces the need for additional modifications to the vehicle's electrical system and software.

Characteristics of a Used Module and Advantages of Using Used Parts

The presented module belongs to the group of used electronic control units and controllers. In practice, this means the possibility of an economical repair of the electronic system while maintaining the original manufacturer's specifications. In many cases, using used parts allows for the restoration of full CAS system functionality without the need to invest in a new component.

The main benefits of using such a solution include:

• maintaining the original BMW electronic architecture,
• possibility of matching the existing wiring harness and control units in the vehicle,
• attractive cost-to-repair effect ratio.

When installing the CAS module, it is recommended to cooperate with a service center experienced in BMW electronics programming and coding to properly synchronize the module with the key, engine control unit, and other comfort systems.

BMW Electronic Control Units and Controllers – Expansion and Service

If you are looking for other BMW Electronic Control Units and Controllers for your car, check out the BMW Electronic Control Units and Controllers available in our store to select components tailored to the specific series and engine version.

Proper diagnostics and selection of modules are crucial for the stable operation of comfort, safety, and powertrain systems. For BMW 3 and 5 Series, correct cooperation between the CAS module and other control units, such as the engine control unit or modules responsible for lighting and comfort, is particularly important.

How to Care for BMW Electronic Modules – User Knowledge

To better understand the principles of operation and repair of BMW electronics, including CAS and FRM modules or engine control units, it is worth reading the guide on our blog. Practical tips on using used parts in the 3 and 5 Series can be found in the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?, which will help you plan electronics service in a conscious and safe way for your vehicle.

Summary

The BMW E90 320si N45 CAS Key Module Computer is a solution for users who want to restore the functionality of the starting and security system in their BMW 3 Series. A properly selected and correctly coded module allows for stable operation of the key authorization system, cooperation with the gasoline engine and manual transmission, serving as a solid basis for further vehicle operation.