Isn't there a second key somewhere? You bought the car and it came with only 1 key?
1997 Z3 3.0: Retired 2006 E90 330i: Retired 2007 E92 335: Retired
2009 E70 4.8: Totaled by Drunk Bitch
2011 E70 3.5D: Current
Space Gray w Black Nevada - Loaded!!!