BMW X5 left headlamp not working after bulb replacement, plug issues suspected on BMW X5

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some BMW X5 owners report experiencing issues with the left headlamp not working after a bulb replacement, which could be due to several factors such as a burnt-out bulb, bad ballast, or electrical issues. If the problem persists even after replacing the bulb and other components, some owners find that the wiring or control system may be at fault. Additionally, moisture entering the control module can lead to complications, particularly with LED headlights. Some owners also encounter a Low Beam Malfunction warning, which may indicate a malfunctioning xenon light control circuit or issues with the fuse or headlight relay. To address these concerns, it is advisable to check plug connections for security and corrosion, inspect the wiring harness for damage, and consider replacing the control module if moisture is suspected. By systematically troubleshooting these potential issues, owners can effectively resolve the problem with the left headlamp.

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