Well, you could use the manual release from the luggage compartment. I recall a rubber plug, and a lever that you pull.

It is in your owner's manual, available in PDF format in the Online References above if you have misplaced it.

Good luck.

Attached Images

 

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue