CAS3 Module BMW E60 E61 LCI E90 E91 Mini R56 Control Unit Key Reading 9147222

CAS3 Module BMW E60 E61 LCI E90 E91 Mini R56 Control Unit Key Reading is a factory-original component from the Electronic control modules and controllers group, responsible for managing the access system and key reading in selected BMW and Mini models. This used control unit ensures the vehicle's original electrical architecture, facilitating integration with the existing installation and reducing the risk of CAN network communication issues.

Specifications and technical data

• SKU: 9147222
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9147222
• Substitutable numbers: 9147222, 61359147222, 9395656, 61359395656, 9147192, 61359147192, 9237046, 61359237046, 9287534, 61359287534, 9147200, 61359147200, 9147227, 61359147227, 9217854, 61359217854, 9278746, 61359278746, 9147217, 61359147217, 9147190, 61359147190, 9227053, 61359227053
• Category: ECUs & Computer Modules

Purpose and function of the CAS3 module

The CAS3 module plays a key role in the vehicle's electronic access and starting system, being responsible for key reading, start authorization, and communication with other control units. In BMW E60, E61 LCI, E90, E91, and Mini R56 series vehicles, it works with the factory installation, maintaining the operating logic intended by the manufacturer.

As an element from the Electronic control modules and controllers category, the CAS3 integrates with the vehicle's data bus, transmitting information to the engine control unit, comfort system, or security systems, among others. This makes it possible to maintain consistent operation of safety systems and comfort functions.

Benefits of using an original module

Using an original CAS3 Module BMW E60 E61 LCI E90 E91 Mini R56 Control Unit Key Reading allows you to maintain compatibility with the vehicle's factory configuration, which is particularly important when working with advanced BMW and Mini electronics. The main advantages include:

• Full integration with the electrical installation – the module is designed for a specific vehicle platform, which minimizes the need for wiring modifications.
• Consistency with other control units – communication with safety and comfort systems is maintained.
• Possibility of matching by OEM and reference numbers – facilitates the selection of the correct variant for a specific car configuration.
• Stable operation within the original CAN and LIN network architecture.

Characteristics of the used control unit

The offered module comes from a BMW vehicle and is a used part, which in practice means a favorable compromise between cost and functionality. Such control units are frequently chosen for electronics repairs when the goal is to maintain the original specification without the need to invest in a new component.

Before installation, it is recommended to verify compatibility with the specific equipment version and prepare for adaptation in the vehicle (coding, potential programming according to service procedures). Thanks to this, the CAS3 module can be effectively implemented as a replacement part in the existing system.

Selection by numbers and compatibility

CAS3 modules come in many variants, which is why it is important to consider the OEM part number and available interchangeable numbers when selecting. This allows the control unit to be matched to the specific body version, model year, and equipment configuration. In practice, this translates into:

• reducing the risk of communication errors between control units,
• easier software-side adaptation in the vehicle,
• maintaining functions related to key reading and start authorization.

In case of doubt, it is worth using the vehicle's VIN and service documentation to select a module compatible with the specific configuration.

Technical support and additional materials

If you want to better understand how to safely and consciously choose used control units and other onboard electronics components, check out our guide: Used automotive electronics – ECU modules and second-hand sensors. The article discusses selection by OEM numbers, hardware and software compatibility issues, and practical installation tips.

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