Control Unit BMW F10 F11 X3 F25 CAS4 Key Reading Module 9268750

Control Unit BMW F10 F11 X3 F25 CAS4 Key Reading Module is an original electronic control module from the Electronic control modules and controllers category, designed for the CAS4 system in selected BMW models. It is responsible for advanced key reading operations and communication with other vehicle controllers, ensuring consistent operation of the comfort and ignition systems. Using this OEM component allows you to maintain the factory electronics architecture without interfering with the installation.

Specifications and technical data

• SKU: 9268750
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9268750
• Substitutable numbers: 9268750, 61359268750, 6809373, 61356809373, 9367375, 61359367375, 9282117, 61359282117, 9244061, 61359244061, 9226956, 61359226956, 9291916, 61359291916, 9318366, 61359318366, 9241972, 61359241972, 9224888, 5WK50521DBR
• Category: ECUs & Computer Modules

Purpose and function of the CAS4 module

The presented CAS4 module is a central component of the key authorization system in selected BMW 5 Series F10/F11 and X3 F25 models. It controls the key recognition process and interacts with the ignition system and other body controllers, which is crucial for proper engine starting and comfort function operation. By maintaining the original operating logic, the module ensures consistency with the vehicle's factory software.

Construction and integration with BMW electronics

As a component from the Electronic control modules and controllers category, this CAS4 controller is designed for tight integration with the vehicle's communication buses. The OEM design enables proper cooperation with other controllers, such as comfort modules, security systems, or body systems. Using an original module reduces the risk of communication errors, coding incompatibilities, and diagnostic issues.

Benefits of using an original used module

Choosing a used OEM CAS4 module allows you to combine cost control with the preservation of factory BMW electronics quality. Compared to aftermarket replacements, the original controller offers:

• compatibility with the vehicle's factory electrical and software architecture,
• proper cooperation with the key reading system and security features,
• easier diagnostics using standard BMW service tools,
• preservation of the comfort system operating parameters specified by the manufacturer.

A used component can be an attractive solution for post-accident repairs, electronics damage, or CAS4 system communication issues, especially when maintaining the original vehicle configuration is essential.

Professional installation and service aspects

Due to the importance of the CAS4 module for the vehicle's security system, installation and programming by a specialized service or workshop equipped with appropriate BMW diagnostic software is recommended. Proper matching to a specific vehicle, including coding and potential adaptation, has a direct impact on the stability of the ignition system and daily operational comfort. A properly selected and configured module reduces the risk of starting issues or error messages on the dashboard.

BMW electronic control modules – expansion and repairs

If you are planning a comprehensive repair or upgrade of the body electronics area in your BMW and need other components from the same group, such as comfort controllers, door modules, or central units, check out the available parts in the BMW electronic control modules and controllers category.

More about the role of original modules in premium cars

If you are interested in how original electronic modules influence the character of premium brands and why it is worth choosing verified dismantled components, read the article: Audi and emotions in their purest form – how used parts help maintain the brand's DNA. Although it concerns a different brand, it well illustrates the importance of factory modules for the consistency of electronic systems in modern cars.