Land Rover Discovery Sport L550 Headlamp Control Module 5DF009041-12AA - Used Original Parts

Diagnosis and Common Symptoms

From a workshop perspective, failure of the 5DF009041-12AA module presents with clear, diagnosable symptoms. A primary indicator is a complete or intermittent loss of function in one headlamp assembly. Drivers will often report a "Headlamp System Fault" or "Adaptive Front Lighting Malfunction" warning message on the instrument cluster.

Physical symptoms include a flickering Xenon bulb, an inoperative Daytime Running Light (DRL), or failure of the Adaptive Front-Lighting System (AFS), where the headlamps no longer swivel with steering input. In some cases, the headlamp's self-levelling function will fail, causing the beam to be aimed incorrectly.

Diagnostic scans will typically reveal specific Diagnostic Trouble Codes (DTCs). Look for faults related to communication on the LIN bus, such as B1D68-87 (Left Headlamp Control Circuit - Missing Message), or internal module failures like U3000-49 (Control Module - Internal Electronic Failure). These codes confirm a faulty module rather than a simple bulb or wiring issue.

Introduction

This is a Genuine Hella Headlamp Control Module for the Land Rover Discovery Sport L550, serving as the core component for your vehicle's advanced lighting system. Sourced directly from a donor vehicle, this original part offers a reliable and cost-effective alternative to a new dealership unit. Each module has undergone rigorous bench testing by our technicians to ensure it is fully operational and free from the common internal faults that plague this component.

Product Details

• Brand: Hella (Genuine Land Rover Equipment)
• Model Compatibility: Land Rover Discovery Sport (L550, approx. 2015-2019)
• Part Name: Headlamp Control Module / AFS Light Control Unit / Xenon Ballast
• Part Number: 5DF009041-12AA
• Condition: Genuine Used (Tested Working)
• Notes: This module is responsible for controlling the Xenon bulb ignition, power, and the Adaptive Front-Lighting System (AFS). It is critical to match the part number exactly with your original unit to ensure correct communication and functionality.