I bought my X5 about 4 months and 10 miles ago. Did the 100k service, tranny/diffs/tc, oil/radiator fluids, and replaced AC filter with a new OEM cabin filter (the one located in the hood, near the windshield).

Since new, I've noticed a funky smell coming out of the vents, when the AC is on. Is there another AC filter somewhere that needs changing? I can't diagnose the funky smell coming out of the vents.
It's not a really obnoxious smell, more like old folks home, it goes away the colder the AC gets.

Any help is greatly appreciated.

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Douglas
2006 BMW X5 4.4i Sport