Audi S5 F5 LED Headlight DRL Running Light Control Ballast Left N/S 1408000239

Audi S5 F5 LED Headlight DRL Running Light Control Module Ballast is a specialized component from the Lamp ballasts and igniters group, responsible for stable power supply and control of the LED headlight with daytime running light function. A properly selected module ensures the correct operation of the lighting system, reduces the risk of installation errors, and supports the safe operation of the vehicle.

Specifications and technical data

• SKU: 8W6998473C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W6998473C
• Substitutable numbers: 8W6998473C, 8W6 998 473 C, 1408000239
• Location on the vehicle: Left
• Part type: Headlight Ballast
• Category: Headlight Ballasts & Ignitors

Purpose and function of the module

The presented control module is a component of the LED headlight system with integrated DRL daytime running lights in the Audi S5 F5 generation model. Its task is to precisely control the operation of the LED diodes, monitor electrical parameters, and cooperate with the vehicle's installation and onboard systems. As a result, the headlight maintains stable brightness, and the lighting system operates in a predictable manner consistent with the manufacturer's specifications.

Benefits of using an original Audi module

Using an original module from the Lamp ballasts and igniters group in an Audi S5 F5 allows for maintaining factory lighting parameters and compatibility with the vehicle's electronics. A properly selected controller limits the risk of dashboard errors, light flickering, or improper DRL function. This solution is particularly important for post-collision repairs, headlight replacement, or installation damage. The element comes from the OEM segment, which means it was designed for a specific model and equipment version. In practice, this translates into:

• proper fit to the headlight housing,
• correct electrical connectors without the need for modifications,
• preservation of factory lighting characteristics.

Performance and installation characteristics

The module is designed to operate in the demanding conditions of the headlight housing, where temperature changes and humidity occur. The controller's design is engineered to ensure stable power parameters for the LED diodes and resistance to typical operational loads. Proper selection of this component is crucial for the durability of the headlight and avoiding costly failures of the entire lighting system. In most cases, installation involves removing the headlight, disconnecting the connectors, and replacing the module with a functional unit. It is recommended to have the operation performed by a workshop experienced in working with LED lighting to ensure proper seating of the controller and to check the headlight's seal after installation.

Product condition and practical application

The offered module is a used component, which, in the case of original Audi lighting components, allows for combining high manufacturing quality with a more favorable repair cost. For many users, this is a reasonable compromise between durability and budget, especially for repairs following mechanical damage to the headlight or installation. The module will work well both as a replacement for a damaged controller in a daily-driven Audi S5 F5 and in vehicles after bodywork repairs, where it is necessary to restore the full functionality of LED headlights with DRL.

Technical support and selection of the appropriate element

When selecting a control module for an LED DRL headlight, it is worth verifying compatibility with the specific vehicle equipment version and the type of headlight used. Manufacturer markings and catalog data are helpful in avoiding compatibility issues. In case of doubt, it is worth consulting an automotive electrician or a service center specializing in Audi lighting. If you are planning a comprehensive repair or upgrade of the front lighting zone in your Audi and need other elements from the same group, such as controllers, ballasts, or igniters, check the available parts in the Audi lamp ballasts and igniters category. To better understand why original and used lighting components – including control modules and LED headlights – are often a safer choice than cheap replacements, it is worth reading the article: Original lamps or replacements? Check why used headlights are a guarantee of safety and perfect lighting. Additional information on how to optimize service costs while maintaining part quality is also provided in the guide: Rising repair costs and the boom in used parts – how to save on car service?.