BMW G30 G31 X3 G01 X4 G02 G11 G32 Control Unit SAS Module ECU 1543906

The BMW G30 G31 X3 G01 X4 G02 G11 G32 ECU SAS Module is a specialized electronic component responsible for the precise processing of signals from the steering angle sensor. The original BMW design ensures compatibility with the vehicle's factory architecture and stable cooperation with other control units. This solution is intended for users who want to maintain the consistency of safety and comfort systems in their BMW G-series models.

Specifications and technical data

• SKU: 1543906
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1543906
• Substitutable numbers: 1543906, 34501543906
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Application and Compatibility in BMW G-Series Models

The presented SAS module is designed for BMW vehicles on the G platform, including selected versions of the 5 Series, X3, X4, 7 Series, and Gran Turismo models. The control unit cooperates with the steering system and stability control systems, which is important for integration with advanced driver assistance functions.

By maintaining the original hardware architecture, the module can be used as a replacement part in vehicles factory-equipped with an analogous SAS system. In practice, this means the possibility of restoring the system's proper operation without the need for electrical system modifications.

Function of the SAS Module in the Vehicle's Electronic System

The SAS control module is responsible for processing information about the steering wheel's position and transmitting it to other vehicle control units. This data is used by, among others, the stability control systems, power steering system, and selected driver assistance functions.

Key tasks of the module include:

• continuous reading of the steering wheel's angle and rotation speed,
• transmitting signals to higher-level control units responsible for active safety,
• cooperation with the vehicle's communication bus for data synchronization,
• ensuring the consistent operation of driver assistance systems.

A properly selected and functional SAS module directly impacts driving stability, predictable vehicle responses, and the correct operation of steering system-related functions.

Benefits of Using an Original BMW Module

Choosing an original control unit from the Electronic Control Modules and Units group allows you to maintain the operating parameters intended by the vehicle manufacturer. Compared to aftermarket or universal solutions, an OEM module offers:

• full compatibility with the vehicle's factory electrical system and software,
• stable communication with other control units in the vehicle network,
• reduced risk of diagnostic errors related to incompatibility,
• the possibility of correct adaptation and coding using standard BMW service tools.

For workshops and individual users, this means a more predictable installation process and easier diagnostics in the future.

Condition, Origin, and Installation Aspects

The offered module is a used part, allowing for economical restoration of the electronic system's functionality while maintaining the original manufacturer's specifications. Before installation, it is recommended to perform vehicle diagnostics and verify equipment compatibility to ensure proper cooperation with the existing configuration.

In practice, installing an SAS module in BMW G-series vehicles typically requires:

• access to the steering column and wiring harness,
• correct connection of connectors according to the wiring diagram,
• performing adaptation procedures and potential coding in higher-level control units.

This approach minimizes the risk of errors in the stability control systems and the power steering system.

More About the Role of Original Electronic Modules

If you are interested in the broader context of using original control units and other electronic components in premium cars, it is worth reading the blog post showing how used components help maintain the brand's character – see the article on the impact of original modules and parts on preserving the manufacturer's DNA.

You can find the full range of similar components in our category Electronic Control Modules and Units for Modern Vehicles, where we have gathered control units for various safety and comfort systems.