:welcome: to X5 World. I'm not sure about your particualr situation, and If I recall correctly, nobody here has a european-spec E39 Touring. I would suggest asking your question to one of the general BMW forums. (As this one is usually SAV specific). Here are some of the popular ones:
http://www.bimmerfest.com
http://forums.bimmerforums.com/forum/index.php
http://bimmer.roadfly.com/bmw/forums/e39/
Good Luck!