I see this youtube and part no. for the angel eye bulb - 63 12 6 916 097. I believe I have a dead bulb one side, as the 'rings' don't light on either the xenon D2S [outside] or H1 'bright' [inside]. I'll see if this fix also fixes the 'check side light' warning.
https://www.youtube.com/watch?v=HoMf6nFbzlw

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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.