Headlight fogging fault pattern (M4 2021-2023)
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
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.