BMW 650i electrical issue with left low beam on and right headlamp malfunction causing system failure after fuse replacement on BMW 650i

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

Problem overview

Some BMW 650i owners report experiencing electrical issues, such as the left low beam remaining on and a malfunctioning right headlamp that leads to system failure, even after replacing fuses. These problems may stem from using incorrect or low-quality replacement fuses that cannot handle the electrical load, resulting in premature failure. Additionally, owners often find that loose connections, frayed wires, or corrosion in the wiring can contribute to these malfunctions. Faulty bulbs in either the left low beam or right headlamp may also cause electrical problems and system failures. To diagnose the issue, some owners recommend using a diagnostic tool to scan for error codes that could indicate specific electrical system problems. If these troubleshooting steps do not resolve the issue, it is advisable for owners to seek assistance from a professional mechanic or an authorized BMW service center for a thorough diagnosis and repair.

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