Xenon Ballasts & Cornering Modules (OEM)

OEM Xenon Ballasts & Cornering (AFS) Modules

Browse our range of OEM xenon ballasts and adaptive front lighting (AFS) cornering modules for factory-fitted HID headlight systems.

These components are essential for correct headlight operation and are commonly used to resolve faults such as headlights not turning on, flickering, intermittent operation, or lights switching off after ignition.

We stock genuine and high-quality OEM parts from leading manufacturers including Mitsubishi Electric, AL (Automotive Lighting), Hella, Valeo and LEAR, covering a wide range of vehicles.

Fix Common Xenon Headlight Faults

• Headlight not working
• Light flickering or intermittent
• Headlight turns on then switches off
• One headlight dimmer than the other
• Dashboard warning messages

If you are unsure whether the issue is caused by the ballast, bulb or control module, view our Headlight Faults & Help guide before ordering.

What Is a Xenon Ballast?

A xenon ballast controls the ignition and power supply to HID bulbs such as D1S, D2S, D3S and D4S. It provides the high voltage required to start the light and regulates output to ensure stable performance.

When a ballast fails, the headlight may stop working completely or behave unpredictably.

What Is an AFS / Cornering Module?

AFS (Adaptive Front Lighting System) modules control headlight movement and beam adjustment based on steering input and driving conditions.

Faults in these modules can cause:

• Headlights not levelling correctly
• Cornering lights not functioning
• Warning messages on the dashboard

Compatible Systems & Fitment

Our OEM xenon ballasts and AFS modules are compatible with:

• D1S, D2S, D3S and D4S xenon HID systems
• Factory-installed adaptive headlight systems
• OEM lighting control modules across Audi, VW, BMW, Mercedes, Porsche and more

Important: Always match the part number on your existing unit to ensure correct compatibility.

Explore All Headlight Modules

Looking for additional components such as LED modules, igniters or control units? Browse our full range here:

View All Headlight Ballasts, Igniters & Modules

Top OEM Xenon Ballasts & AFS Modules

Looking for a reliable replacement? These are some of our most popular xenon ballasts and headlight control modules, trusted for quality, compatibility and long-term performance:

• Genuine Mitsubishi 8K0941597E Xenon Ballast (W003T22071) - Audi / VW
• Replacement 8K0941597E Xenon Ballast W003T22071 - Audi / VW (Aftermarket)
• AL 1307329066 Xenon Ballast - Audi BMW Mercedes D2S D2R
• Hella 5DV 009 000-00 Xenon Ballast - D1S Systems
• BMW 7304592 TMS Driver Module - F10 F11 Xenon AFS AHL

All products are fully tested and supplied with a 1-year warranty for peace of mind.

Why Choose HIDS-DIRECT?

• Genuine OEM and high-quality replacement parts
• Trusted brands including Mitsubishi, Hella, Valeo, AL and LEAR
• UK stock with fast dispatch
• Expert support to help identify the correct part
• 1-year warranty on all products

If you are unsure which part you need, contact us with your registration, VIN, or a photo of your existing unit and we will help you identify the correct replacement.

OEM Xenon Ballasts & AFS Modules FAQ

What does a xenon ballast do?

A xenon ballast controls the ignition and power supply to HID bulbs such as D1S, D2S, D3S and D4S. It provides the high voltage needed to start the light and then regulates the output to keep it running correctly.

How do I know if my ballast or AFS module is faulty?

Common signs include the headlight not turning on, flickering, intermittent operation, warning messages, or the light turning on briefly and then switching off. A faulty AFS module may also cause levelling or cornering light faults.

What is the difference between a ballast and an AFS module?

A ballast controls power to the xenon bulb, while an AFS module controls adaptive headlight movement and beam adjustment. Both are important parts of factory xenon headlight systems, but they perform different jobs.

Do I need to match the part number exactly?

Yes, the safest way to ensure compatibility is to match the part number on your existing unit. Even similar-looking modules can vary depending on the vehicle and headlight type.

Can I replace a xenon ballast myself?

In many cases, yes. Xenon ballasts are often plug and play, although access varies depending on the vehicle. If you are unsure, professional installation is recommended.

Do AFS or cornering modules require coding?

Some AFS or cornering modules may work as direct replacements, while others may require coding, initialisation or adaptation depending on the vehicle. If in doubt, it is best to check before ordering.