BMW 5 6 Series E60 E61 E63 E64 Control Unit Module CAS 2 CAS2 6927931

BMW 5 6 Series E60 E61 E63 E64 Control Unit Module CAS 2 CAS2 is a key component of the electronic system responsible for the advanced operation of the vehicle's access and starting system. This component from the Electronic control modules and controllers group ensures precise communication with other control units, supporting the stable operation of the electrical system in BMW 5 and 6 series cars. Thanks to its original OEM design, the module is the right foundation for professional repair or replacement of an existing CAS2 controller.

Specifications and technical data

• SKU: 6927931
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6927931
• Substitutable numbers: 61356965050, 6965050, 61356943854, 61356927924, 61356927929, 61356927927, 61356927926, 61356927930, 61356943853, 61356927928, 61356960978, 61356943851, 61356943857, 61356927931, 61356963828, 61356943860, 6943854, 6927924, 6927929 6927927 6927926, 6927930 6943853 6927928, 696
• Category: ECUs & Computer Modules

Purpose and role of the CAS2 module in BMW

The BMW 5 6 Series E60 E61 E63 E64 Control Unit Module CAS 2 CAS2 operates in the central part of the vehicle's electronic architecture, responsible for key authorization, start/stop function handling, and cooperation with other comfort and safety controllers. In BMW E60, E61, E63, and E64 models, it acts as the master access controller that communicates with the vehicle's electrical system via data buses, ensuring consistent system operation.

Due to its function, this module is particularly important when dealing with engine starting problems, key recognition issues, or malfunctions in comfort systems. Replacing it with a functional CAS2 controller allows for restoring correct system logic and facilitates further diagnostics of potential faults.

Compatibility and interchangeable numbers

The offered controller belongs to the BMW Electronic control modules and controllers family, for which the manufacturer has provided a range of interchangeable numbers. As a result, the module can be used as a replacement for many factory references within the same generation of vehicles. The presence of an extensive list of reference numbers increases the chances of matching it to a specific car configuration while maintaining hardware and software compatibility.

Before purchasing, it is recommended to verify compatibility by the OEM number and compare the markings with the currently installed controller. Proper matching is crucial for the module's correct interaction with the vehicle's electrical system, immobilizer, and other onboard network controllers.

Product characteristics and service application

The presented CAS2 module comes from the original BMW production line, which translates into factory-fit compatibility with electrical harnesses, connectors, and system architecture. This type of component is particularly useful in professional workshops specializing in automotive electronics, CAN network diagnostics, and controller programming.

In practice, the module can be used in the following service scenarios:

• repairing a vehicle with a key recognition problem or lack of response to the start/stop button,
• restoring configuration after damage to the original CAS2 controller,
• replacing a malfunctioning module as part of a comprehensive electrical system repair.

Thanks to the original design, it is possible to use existing mounting points and factory harnesses, which facilitates integration with the vehicle and shortens service time.

Professional selection and installation aspects

To fully utilize the potential of this controller, it is worth combining it with the correct coding and adaptation procedure in the vehicle. The BMW 5 6 Series E60 E61 E63 E64 Control Unit Module CAS 2 CAS2 usually requires configuration using appropriate diagnostic software so that its parameters are matched to a specific BMW E60, E61, E63, or E64 unit. A properly performed adaptation process allows for seamless cooperation with the immobilizer, key, and other comfort modules.

In case of doubts regarding compatibility, selection by OEM number, or controller configuration, it is worth using the practical tips contained in the Global Parts guide – they are described in detail in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which discusses, among other things, selection by VIN/OEM, HW/SW compatibility, and the most common service questions.

Expanding repairs within BMW controllers

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

Such an approach allows for consistent servicing of the entire electronic system, reduces the risk of incompatibility between individual controllers, and facilitates subsequent diagnostics. By choosing original modules from the same group, you maintain the factory logic of system operation, which is important for both user comfort and vehicle operational safety.