Conditions required for switch-on for the main-beam headlights

WARNING: This page is about a different car, the 2008 BMW 760Li, 2007 BMW 760Li, 2006 BMW 760i, 2006 BMW 760Li, and 2005 BMW 760i. However, it is still accessible from the selected car via links, so may be relevant.

Road speed greater than 50 km/h.
Reverse gear must not be engaged.
Image sensor does not detect an oncoming vehicle or a vehicle ahead.
Image sensor detects adequate darkness.