00 00... Check horn, headlight flashers and hazard warning flashers: Notes
WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
Horn
Check function.
NOTE:
In the case of twin-tone fanfares, make sure that both fanfares are working properly.