After finishing installing a handsfree system in a coworker's '03 X5 3.0 last week (CD headunit), the AM radio reception now shows MW - medium wave and LW - Long wave tuning options. Was something inadvertantly changed to a European setting? If so, how can we set it back to the US standard? He likes to listen to AM 1000 sprots radio in Chicago, but with the current setting, the closet he can get is MW 999.