For older E53s, especially, there is a common defect with overheating/plastic melting. Search for the long thread on this topic, with instructions. But first, try pulling the bulb mounts from the light and check the connections closely; if not burned/corroded, you may just need to clean them up and use dielectric grease.
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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.
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