FWIW, My AC wasn't very cold and the interior fan was running very fast. So into the shop; AC refrigerant was removed, measured and refilled. The X5 only holds 1lb of refrigerant so it doesn't take much to make it not work correctly. My bill was $105.

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2007 328i Sport, Monaco Blue
2011 X35D - sold -Space Grey
2004 X5 4.4i - sold - Kalahari Beige
2001 X5 3.0i - sold - Pearl Beige
2006 325i Sport, Sonora Beige
2000 323i - sold - Sienna Red