I have checked the manual, and there is no mention of this, other then having a technician reset the system after a power failure. Usually, the allen wrench is what would be used, and it is no longer part of the tool kit.
2006 Z4 3.0i Roadster - Jet Black / Black Interior (Traded-in)
2007 328i Sedan - Titanium Silver / Grey Interior (Traded-in)
2008 128i Convertible - Cashmere Silver / Black Interior
2013 X1 sDrive28i - Mineral Grey / Black Interior