This is what I would do If I were you. Get a zip strip or a cable tie and then lie under the engine area of your car. Look for a brake line or another easy to get to area and zip strip the key to that area. In a pinch, you will have a spare incase you lock yourself out of the car. As the zip strip is made of plastic, do not place it too close to the engine block as it may melt.
where is the transmission dipstick on a BMW X3
The 2011 BMW X3 has 24 valves.
The 2005 BMW X3 has 24 valves.
The 2010 BMW X3 has 24 valves.
The 2009 BMW X3 has 24 valves.
The 2006 BMW X3 has 24 valves.
The 2008 BMW X3 has 24 valves.
The 2014 BMW X3 has 16 valves.
The 2013 BMW X3 has 16 valves.
There is NO spare tire in 2006 bmw x3
The 2004 BMW X3 has 24 valves.
The 2012 BMW X3 has 24 valves.