BMW E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9267609

BMW E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module is an advanced electronic system component responsible for managing comfort functions and access authorization in selected BMW models. This component from the Electronic control modules and ECUs group is intended for users who expect stable operation of electronic systems and proper integration with other vehicle controllers. Thanks to its factory design, the CAS 3 ECU ensures consistency with the car's electrical architecture and facilitates diagnostics.

Specifications and technical data

• SKU: 9267609
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9267609
• Substitutable numbers: 61359267609, 9267609, 61359395657, 9395657, 61359287535 61359237047 61359217853, 9287535 9287535 9217853, 61359147226 61359226238, 9147226 9226238
• Category: ECUs & Computer Modules

Purpose and role of the CAS 3 module in BMW

The CAS 3 module in the BMW E60, E87, and E90 series plays a key role in comfort and vehicle access management. It is responsible for interacting with the ignition system, the immobilizer system, and selected comfort functions, integrating them into a single controller. As a result, communication between individual electronic systems is orderly and predictable, which translates into stable vehicle operation.

As an ECU family component, the CAS 3 comfort controller is designed to operate within the vehicle network using communication buses used by BMW. This facilitates subsequent computer diagnostics, software updates, and configuration of functions according to the specific equipment of the car.

Benefits of using an original BMW module

Using an original CAS 3 module in a BMW allows for maintaining the consistency of electrical and logical parameters with the rest of the installation. The controller is prepared to work with factory safety and comfort systems, which reduces the risk of communication errors and coding problems. For workshops and users, this means easier matching to the specific vehicle configuration and predictable system behavior after installation.

For this type of component, the ability to match by OEM number and available interchangeable numbers is particularly important. This allows for precise selection of the module for a specific equipment version, model year, and engine variant, which has a direct impact on the correct operation of comfort and authorization systems.

Condition, selection, and installation of the comfort controller

The presented module belongs to the group of used electronic components, which allows for an economical repair of the comfort system while maintaining factory specifications. Before installation, it is recommended to verify compatibility by part number and reference numbers, as well as to consult with a diagnostician or automotive electrician regarding the required programming and adaptation procedures.

In practice, installing a CAS 3 in a BMW E60, E87, and E90 usually requires:

• checking the controller's compatibility with the vehicle's equipment,
• preparing appropriate diagnostic tools for coding,
• following safety procedures when working with the electrical system.

A properly selected and configured comfort module restores the correct operation of functions related to vehicle access and the operation of selected comfort systems.

Technical support and selection of used electronics

When choosing a used ECU controller, it is worth using professional guides on selection by OEM number, interchangeable numbers, and hardware/software compatibility. A detailed discussion of these issues, along with practical examples and answers to frequently asked questions, can be found in the article: Used automotive electronics – a guide to selecting ECU modules and sensors.

Additionally, if you are interested in a broader look at the market for original second-hand parts and want to learn about the most frequently chosen solutions for popular car models, the following guide may be helpful: best used car parts – a list of popular original components.

Related BMW Electronic control modules and ECUs

If you are planning a comprehensive repair or upgrade of the comfort electronics area in your BMW and need other elements from the same group, such as additional controllers, body modules, or ECUs responsible for comfort, check the available parts in the BMW Electronic control modules and ECUs category.