Audi A4 B9 LED Module Light Unit Wiring Harness Right Rear O/S 8W0947355M

Audi A4 B9 LED Module Light Unit Wiring Harness Right Rear O/S is a component from the Electronic control modules and controllers group, designed to operate the rear right LED lighting in your Audi. It ensures precise light control and a stable electrical connection, which translates into safe and predictable operation of the lighting system.

Specifications and technical data

• SKU: 8W0947355M
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0947355M
• Substitutable numbers: 8W0947355M, 8W0 947 355 M
• Location on the vehicle: Rear, Right
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented module is designed to work in the rear right part of the vehicle, where it is responsible for powering and controlling the LED lighting. It integrates the controller functions and the wiring harness, thereby reducing the number of connections and facilitating installation in factory mounting points.

As a component dedicated to a specific Audi model, the module works with the onboard electrical system and diagnostic systems, which facilitates the detection of potential faults and maintains consistency with the vehicle's original electrical architecture.

Construction and technical advantages

The module combines control electronics and a matched wiring harness in one housing, which minimizes the risk of installation errors and improves connection reliability. The connectors used are prepared for compatibility with factory sockets in the Audi A4 B9, allowing for installation without interfering with the original wiring.

Key technical advantages include:

• dedicated placement in the rear right part of the vehicle,
• integration of the controller with the wiring harness,
• compatibility with LED lighting used in the Audi A4 B9,
• preservation of factory light control logic.

Thanks to this solution, you maintain consistency with the manufacturer's original design, and the lighting system operates in a predictable manner consistent with system specifications.

Benefits of using an original Audi module

Using an original module from the Electronic control modules and controllers group allows you to maintain high-quality lighting system performance and reduce the risk of compatibility issues. Proper matching of electrical parameters and communication with the rest of the installation translates into stable light operation, no errors on the dashboard, and correct cooperation with safety systems.

A used component is a reasonable choice for post-accident repairs or replacing a damaged controller when you want to maintain the vehicle's original specifications while optimizing costs. Factory fitment facilitates installation and shortens service time, which is important for both workshops and individual users.

Selection and installation in practice

When selecting an LED lighting module for the Audi A4 B9, it is crucial to pay attention to compatibility with the body version and placement in the vehicle (rear, right side). A properly selected component allows for installation in a mode similar to plug&play, without the need for wiring modifications or additional harness adjustments.

In practice, installation comes down to:

• removing the damaged module from the rear right part of the vehicle,
• connecting the installation plugs to the new component,
• checking the correct operation of the LED lighting and potential computer diagnostics.

Thanks to the preservation of the original electrical architecture, after correct installation, the lighting system should operate according to factory settings, without the need for additional modifications.

Audi electronic control modules and controllers – expansion and repairs

If you are planning a comprehensive repair or upgrade of the body electronics area in your Audi and need other components from the same group, such as light controllers, comfort modules, or other systems managing the electrical installation, check the available parts in the Audi electronic control modules and controllers category.

More about used automotive electronics

When choosing a used lighting module, it is worth knowing how to assess its condition, select the right component for a specific car version, and what to pay attention to during installation. Practical tips on selecting and operating controllers, comfort modules, and other electronic components can be found in the article Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which will help you consciously plan your repair and avoid common mistakes.