63 12... Headlight fogging fault pattern

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Certain weather conditions can lead to fogging on the inside of the headlight lens.
This is not necessarily a fault that requires replacement of the headlight.

Fig 1: Identifying Permissible And Impermissible Fogging

Courtesy of BMW OF NORTH AMERICA, INC.

Permissible fogging. Headlight does not need to be replaced.
Impermissible fogging. Replace the headlight.