BMW E60 E81 E87 E90 E91 E92 E93 CAS3 Control Unit Key Reading Module 9147217

The BMW E60 E81 E87 E90 E91 E92 E93 CAS3 Control Unit Key Reading Module is a specialized electronic control module responsible for managing the CAS3 system and reading the key in selected BMW models. This component works in conjunction with the immobilizer system and the vehicle's body electronics, ensuring correct start authorization and communication with the key. By maintaining the original system architecture, the module allows for professional electronic system repair without altering the vehicle's wiring.

Specifications and technical data

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

Purpose and Function of the CAS3 Module

The offered CAS3 module is part of the Electronic Control Units and Controllers group, used in popular BMW models of the E60, E81, E87, E90, E91, E92, and E93 series. Its function is to manage vehicle access logic, read data from the key, and transmit signals to other control units in the vehicle. A correctly selected CAS3 module is crucial for the stable operation of the start/stop system, anti-theft protection, and vehicle network communication.

This type of solution is particularly important for advanced electronic repairs when it's necessary to replace a damaged control unit with a component of matching specifications. The module allows for the preservation of the system's original operating logic, which facilitates subsequent configuration and adaptation in the vehicle.

Benefits of Using an Original BMW Module

Using an original BMW CAS3 module ensures:

• consistency with the vehicle's original electrical architecture,
• proper cooperation with other control units in the CAN network,
• the possibility of professional adaptation using dedicated service software,
• preservation of the full functionality of the key reading and start authorization system.

Thanks to this solution, the security system's functionality and everyday driving comfort can be effectively restored, without the need for compromise with aftermarket solutions.

Technical Characteristics and Compatibility

The CAS3 module belongs to the body control unit group, which communicates with other vehicle electronic components. In practice, this means precise matching in terms of version and configuration is necessary to avoid communication errors or starting problems. The offered component has a dedicated OEM part number and a set of interchangeable numbers, which simplifies compatibility verification with a specific vehicle instance.

Before purchasing, it is advisable to compare the module's markings with the vehicle's data or use professional verification by part number. This approach minimizes the risk of incompatibility and speeds up the installation and programming process.

Product Condition and Service Application

The offered module comes from a BMW vehicle and is intended for service and repair applications in vehicles equipped with the CAS3 system. This solution is particularly useful for:

• damage to the original module responsible for key reading,
• problems with start authorization or key communication,
• the need to restore the security system's functionality after an electronic failure.

A correctly selected module allows for the restoration of system functionality without altering the vehicle's mechanics, which is beneficial in terms of both cost and repair time.

Related BMW Modules – Expansion and Electronic 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 control units, door modules, or steering column control units, check the available parts in the BMW Electronic Control Units and Controllers category.

More About Selecting Used Control Units and Electronic Parts

When working with advanced vehicle electronics, such as CAS modules, it is worth knowing the differences between original, aftermarket, and used parts and their impact on repair costs and reliability. Practical tips on the cost-effectiveness of various solutions can be found in the article Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?.

If you are also interested in how precisely selected electronic components influence the preservation of a premium brand's character, it is worth reading the material dedicated to Audi: Audi and Pure Emotion. How Used Parts Help Maintain Brand DNA?.

Summary

The BMW E60 E81 E87 E90 E91 E92 E93 CAS3 Control Unit Key Reading Module is a specialized module from the Electronic Control Units and Controllers group, designed for managing the CAS3 system and reading the key in selected BMW models. When correctly selected and configured, it effectively restores the security system's functionality and everyday vehicle comfort, serving as a professional solution for workshops and users who prioritize correct automotive electronics operation.