Mercedes

Mercedes Xenon Ballasts & AFS Control Modules

Browse our range of Mercedes xenon headlight ballasts and AFS (Adaptive Front Lighting) control modules for factory-fitted HID lighting systems.

These components are commonly required to fix issues such as headlights not working, flickering, or switching off after ignition.

We supply both genuine OEM and high-quality replacement parts compatible with a wide range of Mercedes-Benz models.

Common Mercedes Headlight Faults

• Headlight not turning on
• Light flickering or intermittent
• Headlight turns on then switches off
• One headlight not working
• AFS / cornering light warning messages

These symptoms are often caused by a faulty ballast or AFS control module.

If you are unsure which part is faulty, view our Headlight Faults & Help guide.

What Does a Mercedes Xenon Ballast Do?

A xenon ballast controls the ignition and power supply to HID bulbs such as D1S and D3S. It generates 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. :contentReference[oaicite:0]{index=0}

What Is an AFS (Adaptive Headlight) Module?

AFS modules control dynamic headlight movement and cornering light functions, adjusting the beam based on steering and driving conditions.

Faults can result in:

• Headlights not levelling correctly
• Cornering lights not working
• Dashboard AFS warnings

These systems are commonly found on models such as E-Class, C-Class, ML, GL and S-Class vehicles. :contentReference[oaicite:1]{index=1}

Top Mercedes Xenon Ballasts & Modules

These are some of our most popular Mercedes-compatible xenon ballasts and AFS modules:

• Mercedes A2229003300 Xenon D3S Ballast Control Unit - CLA C117
• Hella 5DC009060 AFS Ballast - Mercedes E-Class W211 / ML / GL
• AL 130732915602 Xenon Ballast - Mercedes W204

All products are supplied with a 1-year warranty and are tested for compatibility and performance.

Compatible Mercedes Models

Our Mercedes ballast and AFS modules are commonly fitted to:

• C-Class (W204, W205)
• E-Class (W211, W212)
• S-Class (W221, W222)
• ML / GLE (W164, W166)
• GL / GLS (X164, X166)
• A-Class, B-Class, CLA and GLA models

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

Why Choose HIDS-DIRECT?

• OEM and high-quality replacement parts
• Mercedes-specific compatibility support
• UK stock with fast dispatch
• Expert help to identify the correct module
• 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.

Mercedes Ballast & AFS Module FAQ

How do I know if my Mercedes ballast is faulty?

Common signs include flickering headlights, lights not turning on, or the headlight switching off after ignition.

Do Mercedes AFS modules require coding?

Some AFS modules are plug and play, while others may require coding or initialisation depending on the vehicle.

Can I replace a Mercedes ballast myself?

In many cases yes, although access can vary depending on the model and headlight design.

Do I need to match the part number?

Yes, matching the exact part number is essential to ensure compatibility.