Headlight fogging fault pattern (M4 2021-2023)
NOTE:
Certain weather conditions can lead to fog on the inside of the headlight diffuser.
This is not necessarily a fault that requires replacement of the headlight.
This is not necessarily a fault that requires replacement of the headlight.
Top row (A): Permissible fogging. Headlight does not need to be replaced.
Bottom row (B): Impermissible fogging. Replace the headlight.