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

BMW 3 Series E90 320si 173HP DME 7560955 Petrol N45 ECU Kit CAS2 + Key Manual is a specialized component from the Electronic control modules and controllers group, designed for the electronic system of the BMW 3 Series E90 320si model with the N45 engine. It enables proper cooperation of the starting system, immobilizer, and body electronics, ensuring stable communication between the key and the vehicle's control units.

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

The presented CAS module is dedicated to the BMW E90 320si vehicle with the N45 unit, running on petrol and equipped with a manual transmission. It is responsible for handling key authorization, controlling the engine start procedure, and integrating with other control units in the vehicle, which is crucial for the safety and proper operation of the entire electronic system. As an element from the Electronic control modules and controllers category, the CAS module acts as a central communication hub that transmits signals between the key, the engine control unit, and other comfort and security systems. This makes it possible to maintain the consistency of the vehicle's configuration and the correct operation of functions related to starting.

Benefits of using an original BMW module

Using an original CAS module dedicated to the BMW E90 320si N45 allows for maintaining the factory logic of electronic systems. Proper matching to the specific engine version and transmission reduces the risk of communication problems on the data bus and minimizes the need for additional installation modifications. A used element of this type is a particularly attractive solution for vehicle repairs where the starting electronics have been damaged or it is necessary to replace the key-module set. This allows for the optimization of service costs while maintaining high compliance with factory vehicle parameters.

Selection, compatibility, and installation aspects

When selecting a CAS module for the BMW E90 320si N45, it is crucial to pay attention to compatibility with the specific petrol engine version and manual transmission configuration. The product has an assigned OEM part number and associated interchangeable numbers, which facilitates the verification of compatibility with a given vehicle based on service documentation or manufacturer catalogs. In practice, the installation of a CAS module usually requires an appropriate programming or adaptation procedure to the vehicle, performed using specialized diagnostic software. A correctly selected and configured module restores the proper operation of the starting system, immobilizer, and communication with other control units, which is particularly important after an electronics failure or the replacement of system components.

Application in a petrol system with a manual transmission

The CAS module in this configuration is optimized for cooperation with the N45 petrol engine and a manual transmission, which translates into the correct reproduction of factory vehicle settings. Thanks to this, the consistency of the power unit's operating parameters, security systems, and the logic of functions related to starting and stopping the engine is maintained. Such matching is important both for standard repairs and for more advanced service work, where it is required to replace several electronic components at the same time. A properly selected CAS module reduces the risk of communication errors and facilitates subsequent vehicle diagnostics.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the control electronics area in your BMW and need other elements from the same group, such as engine control units, comfort modules, or body control units, check the available parts in the BMW electronic control modules and controllers category. When making a decision about choosing a used CAS module, it is worth familiarizing yourself with practical tips regarding the selection and operation of automotive electronics – a detailed discussion of this topic can be found in the article The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?.