I had the exact same thing happen to me but they went out for almost a minute. The dealership couldn't figure out why that happened but it never happened again. Hmmm.....

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2004 BMW X3 2.5i
Black Sapphire Metallic
Premium & Cold Weather Packages
STEPTRONIC 5-Speed Automatic Transmission
Terracotta Leather Interior (HOT!!!)
Dark Wood Trim
17" Double Spoke Wheels (Style 111)
Scorpion Tires
Panorama Roof (HOT!!!)
Fog Lights