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I learned today that BMW issued a service bulletin (63 02 22) addressing excess headlight condensation in M3 sedans, M4 coupes, and G2x 4 Series produced before March 2022. The bulletin prescribes replacing headlight vents with updated parts. Parts for my car arrived today; installation will occur later this week.
Again, some condensation is normal and will dissipate in short order after running the headlights on low beam.
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