The top storage box in the trunk may not be in it's proper position. It is made so that it can be raised to give more trunk storage space when the top is up, but is it is raised, the top will not lower because micro switches monitor the position. Check your owners manual for more details, as it is explained quite well there.
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Press and hold the "top" button on the console.
160 mph
The 2013 BMW Z4 has 16 valves.
The 2006 BMW Z4 has 24 valves.
The 2007 BMW Z4 has 24 valves.
The 2012 BMW Z4 has 16 valves.
The 2005 BMW Z4 has 24 valves.
The 2009 BMW Z4 has 24 valves.
The 2008 BMW Z4 has 24 valves.
The 2011 BMW Z4 has 24 valves.
The 2010 BMW Z4 has 24 valves.