Here: eas - 714.369.8524 | car-solution - eLight standard for e46 3-series, e83 X3 & e85 Z4 you could buy it in the US. Not sure why X5 E53 is not listed but I have it in and it definitely does what you request. The function is called Wayfinder and you can choose which lamps should guide you and how long 10 sec - 90 secs is chooseable.

You can download the software for configuration for free. There you have a section (in Help) on how to mount it and you can have a look what it does.

Software is here: http://www.car-solution.de/dl/Setup_...0R53_V2.06.exe

Good luck