I was looking for the same thing a while back and there is no option to code it that way. The option you have is to get a rely and wire it to a switched 12V somewhere under the dash on in the electrical box. I have done this for the angeleyes, it's doable if you really need that feature.

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4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold