Has your FRM been replaced under the extended warranty? The scanner says both left AND right headlights. My fault was isolated to the left headlamp module. It's been intermittent for years and hasn't been a problem in at least that long as of late.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim