BMW F20 Xenon HID Headlight Ballast Control Unit - Used Original Parts

Diagnosis and Common Symptoms

From the workshop floor, failure of the F20 Xenon Ballast is a common issue. The primary symptom is a non-functional dipped or main beam on one side. This can manifest as complete failure to ignite, intermittent flickering upon start-up followed by shutdown, or the Xenon bulb glowing a faint pink/purple colour before extinguishing.

On the dashboard, you will typically see a "Dipped Beam Failure" or "Lighting System Malfunction" warning message, often accompanied by a persistent bulb-out icon. A diagnostic scan, usually targeting the FRM (Footwell Module), will reveal fault codes related to short circuits, open circuits, or a failure to ignite the Xenon lamp for the specific side.

Introduction

Restore your F20's critical night-time visibility with a field-proven, Genuine BMW component. This is not an aftermarket replica; it is a Genuine Used Xenon Headlight Ballast that has been removed from a donor vehicle. Each unit is professionally inspected and bench-tested for stable voltage output and correct ignition cycling, ensuring it performs to factory specifications upon installation.

Product Details

• Brand: Mitsubishi Electric (Genuine BMW Supplier)

• Model Compatibility: BMW 1 Series (F20, F21) - For vehicles equipped with factory Xenon HID headlights.

• Part Name: Xenon HID Headlight Ballast / Igniter Control Unit

• Condition: Genuine Used (Tested Working)

• Notes: This unit is responsible for regulating high voltage to the D1S Xenon bulb. Failure is often caused by moisture intrusion into the headlight housing; we recommend checking the headlight rear cover seal during replacement. This is a direct replacement part.