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ELERON BMW 4 Series and M3/M4 headlights — ICON Style CSL/GTS tri-color DRL and Snake-Eye arrow DRL montage

ELERON BMW 4 Series (F32/F33/F36) + M3 (F80) / M4 (F82/F83) Headlights Guide — ICON / CSL-GTS Tri-Color & Snake-Eye (E-Mark, Fitment, Pin Guide)

A practical ELERON guide for BMW 4 Series F32/F33/F36 and BMW M3 F80 / M4 F82/F83 headlight upgrades: ICON/CSL-GTS tri-color DRL options and Snake-Eye arrow DRL. Includes E-mark context, exact pin/SA-code fitment, DRL switching steps, install notes, coding expectations, and troubleshooting tips. Plus: why F3x angel eyes fail, OEM part number cross-reference, and what a modern bi-LED beam changes at night.

Eleron4 December 2025
7 min read6307 views

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