Most simple code readers will only read generic and/or engine codes. You need something like a GT1 (which I would describe as the full meal deal, a BMW-specific tool).

There are probably some other diagnostic tools that do what the GT1 does, but I don't know the names of them. Weasel would.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue