BMW F32/F33/F36 & M3/M4 Headlights — ICON & Snake-Eye Guide

ELERON • BMW F3x / F8x Headlights Guide

This guide covers ELERON headlight upgrades for BMW 4 Series F32 (Coupe), F33 (Convertible), F36 (Gran Coupé) — plus BMW M3 F80 and BMW M4 F82/F83 (pre-LCI & LCI, depending on connector version). You’ll learn why these headlights age the way they do, what to buy, how to pick the correct pin version, how the DRL modes work, and what to expect for install/coding.

If you only take one thing from this article: count the populated pins on your factory headlight connector first. It’s the fastest way to avoid ordering the wrong version.

ELERON BMW 4 Series and M3/M4 headlights — ICON CSL/GTS tri-color DRL and Snake-Eye arrow DRL montage — Two headlight families: ICON/CSL-GTS (multiple DRL styles) and Snake-Eye (arrow DRL). Choose the correct pin version and you’re 90% there.

1) Why F3x owners upgrade: failures, dim output, night driving

The F32 generation is now 6–13 years old, and its factory headlights have well-documented aging patterns. If one of these brought you here, you’re not alone:

Angel-eye DRL burnout (xenon cars)

The corona rings on pre-LCI xenon headlights are fed by small LED modules that suffer in the humid environment inside an aging housing. The classic pattern: one ring goes dim or yellow first, then dies — usually one side before the other. Because BMW doesn’t sell the rings separately, dealers quote complete assembly replacement, and quotes north of €1,500 per side are common. Board-level specialist repairs exist, but color match and lifespan vary.

LED & adaptive module faults (552 cars)

Factory Adaptive LED units have their own record — BMW’s service bulletin SI B63 09 14 covers F32/F33 cars with option 552 for one-side malfunctions, sporadic flickering while driving, and check-control warnings. Owners often report an “Adaptive Headlight Malfunction” message appearing right after a car wash: water finding a connector or module.

Condensation & water ingress

The number-one killer of these headlights. Aged seals let moisture in, the lens fogs after every wet week, and the trapped humidity is exactly what corrodes connectors and kills the DRL and control modules above. Once a housing breathes water, individual part swaps become temporary fixes.

Dim output at night

Xenon burners lose brightness gradually over the years — most owners never notice how much output has faded until they see a fresh unit next to theirs. Add a decade of lens hazing and night visibility on many F3x cars is genuinely reduced, which makes dark-road and winter commutes more tiring than they should be. If your search started with “F32 headlights too dim,” this is why — and brighter bulbs alone can’t fix hazed optics or aged reflectors. Modern bi-LED projectors restore a wide, long, white beam with a sharp cutoff.

Common BMW F32 headlight problems — one dead yellowed angel-eye DRL ring and condensation inside the housing — The two aging patterns owners recognize instantly: a dead or yellowed corona ring on one side, and fog behind the lens. One usually causes the other.

ELERON bi-LED low beam pattern at night on a dark road — wide white beam with a sharp cutoff — What the upgrade looks like from the driver’s seat: a wide, white low beam with a crisp cutoff — the difference is biggest on unlit roads and dark winter commutes.

2) Overview: which ELERON headlight style is right?

A) ICON / CSL-GTS Tri-Color (most popular)

OEM-look, full-LED upgrade with clean light guides and strong bi-LED projector output. Run a subtle white-only OEM DRL for a factory finish — or choose CSL/GTS-inspired variants that add yellow, amber, or red options for a more aggressive signature when you want it.

Best for: OEM+ daily look in white, with optional motorsport DRL modes.
DRL variants: White-only • White+Yellow • White+Yellow+Amber • White+Yellow+Red.
Signals: orange/amber LED turn signals with crisp diffusion.

B) Snake-Eye “Arrow DRL”

Full-LED upgrade with a bold arrow DRL look. DRL is switchable between OEM-white (~6000K) and selective yellow (~3000K) using the high-beam stalk.

Best for: a standout DRL signature without going “full show build.”
DRL modes: White ↔ Yellow.
Output: bi-LED projectors with a sharp cutoff and strong night visibility.

Already running factory LED headlights and only after the CSL yellow signature? You may not need new headlights at all. For factory Icon Adaptive LED units, our switchable white/yellow F32/F33/F36 CSL DRL modules swap only the DRL board — factory headlights and every function stay in the car. The full story is in our CSL DRL modules guide. The complete headlights on this page are the right path when you’re coming from halogen/xenon, when a factory unit has failed, or when you want the ICON or Snake-Eye look itself.

Important: These headlights are sold in multiple connector versions. Your best move is to count the populated pins on your factory headlight plug and cross-check your VO/SA codes (examples below).

3) DRL modes & quick switching (high-beam stalk)

ICON / CSL-GTS DRL variants

White-only OEM version: fixed white DRL (no color change).
White + Yellow: flash 5× to toggle between White (~6000K) and Yellow (~3000K).
White + Yellow + Amber: flash 4× white; 5× yellow; 6× amber.
White + Yellow + Red: flash 4× white; 5× yellow; 6× red.

Tip: switch modes with the vehicle on and DRLs active. If the count doesn’t register, pause and repeat with steady timing.

Snake-Eye Arrow DRL

flash 5× for yellow (~3000K)
flash 4× for white (~6000K)

Best practice for daily driving: use the clean white DRL mode. Additional colors are a styling option often used for tuning builds and events — use as intended in line with local expectations. The full white/yellow legality logic is explained in our CSL DRL guide.

4) Exact fitment & pin guide (6/8/9/10-pin)

Supported platforms: F32/F33/F36 plus F80/F82/F83. Order the connector version that matches your factory plug.

Factory lighting	Typical years	VO/SA codes (examples)	What to order
LED (LCI) — standard & adaptive	2017–2020	5A2 / 552	6-pin
Xenon (Pre-LCI, non-adaptive)	2013–2016	522 (no 524)	8-pin
Adaptive Xenon (Pre-LCI)	2013–2016	522 + 524 (AHL/AFS)	9-pin
Adaptive LED (Pre-LCI)	2013–2016	552	10-pin — the most popular version we ship

The connector shell can look identical across versions. What matters is the number of populated pins. Always confirm by counting pins on the vehicle-side headlight plug. Not sure which factory headlights you have in the first place? Decode your VIN and option codes with our BMW headlight identification guide.

Pin Photo Guide (Tap to Enlarge)

Fastest way to avoid ordering the wrong version.

BMW F32/F33/F36 and F80/F82/F83 headlight connector — 6-pin LED plug (populated pins) — 6-pin — LCI LED (2017–2020)

Both standard (5A2) and Adaptive LED (552) LCI cars. Confirm by counting populated pins.

BMW F32/F33/F36 and F80/F82/F83 headlight connector — 8-pin xenon non-adaptive plug — 8-pin (Xenon non-adaptive)

Typical 522 Xenon without 524 (no AHL/AFS).

BMW F32/F33/F36 and F80/F82/F83 headlight connector — 9-pin adaptive xenon plug — 9-pin (Adaptive Xenon)

Typical 522 + 524 (AHL/AFS) setups.

BMW F32/F33/F36 and F80/F82/F83 headlight connector — 10-pin pre-LCI Adaptive LED plug — Most popular
10-pin — Pre-LCI Adaptive LED (2013–2016)

Factory Adaptive LED (552) cars before the facelift — the version we ship most.

Tip: if your car is modified or has an unusual retrofit history, rely on pin counting first and VO/SA codes second.

OEM part number cross-reference

The fastest confirmation of all: read the BMW part number on your headlight’s housing sticker and match it below. Each factory number maps directly to one pin version.

Factory headlight	Pin version	OEM part numbers (L / R)
Pre-LCI Bi-Xenon · 2013–2016	8-pin	EU L: 63117377843 / 63117377845 · EU R: 63117377844 / 63117377846 · US L: 63117377851 · US R: 63117377852
Pre-LCI AHL Xenon (524) · 2013–2016	9-pin	EU L: 63117377839 / 63117377847 · EU R: 63117377840 / 63117377848 · US L: 63117377853 · US R: 63117377854
Pre-LCI Adaptive LED (552) · 2013–2016	10-pin	EU L: 63117377841 / 63117377849 · EU R: 63117377842 / 63117377850 · US L: 63117377855 · US R: 63117377856
LCI Standard LED · 2017–2020	6-pin	EU L: 63117478153 / 63117478151 · EU R: 63117478154 / 63117478152 · US L: 63117478155 · US R: 63117478156
LCI Adaptive LED (552) · 2017–2020	6-pin	EU L: 63117478535 / 63117478157 · EU R: 63117478536 / 63117478158 · US L: 63117478159 · US R: 63117478160

This list covers the most common references; some market-specific or late-production numbers may not be listed. Number not shown? Send us your VIN and we’ll confirm. Curious how BMW’s 63 11 numbering works? See our headlight identification guide.

5) E-mark & “road-legal in white mode” (plain language)

ELERON headlight assemblies in this range are E-marked. For everyday driving, these kits are designed to run a clean white DRL mode. On multi-mode variants, additional DRL colors exist as a styling option — commonly used for tuning builds and events — so the best practice is simple: use white DRL mode for daily road operation and use as intended in line with local expectations.

Want deeper context on markings and inspections? See: E-mark & ECE lighting guide.

E-mark and function codes on headlamp lens — annotated close-up — Look for the circled “E” marking and codes on the lens or housing.

6) Install notes, coding expectations, aiming

Install (high-level)

Disconnect the battery. Protect painted edges before removing bumper/trim.
Remove the old headlight assemblies and transfer any required clips/brackets.
Install ELERON housings and connect the correct pin version (6/8/9/10).
Function check: low/high beam, DRL, turn signals, and DRL mode switching.
Aim the headlights after installation.

For aiming basics and a clean cutoff setup, use: How to aim headlights.

Coding expectations (what’s normal)

Pre-LCI Xenon → Full LED: some cars may need coding to prevent bulb checks or adapt lighting parameters.
Adaptive (AFS/AHL) cars: if you move to non-adaptive headlights, coding may be needed so the car doesn’t expect adaptive functions.
10-pin Adaptive LED cars: fully supported and our most-shipped version — just confirm pin population before ordering so the correct harness version arrives.

If you see warnings, flicker, or fast indicator behavior, start here: CANBUS & LED error fixes.

7) Troubleshooting: warnings, flicker, hyper-flash

Dash warnings / bulb checks

Confirm the correct pin version (6/8/9/10).
Reseat connectors and check grounds (loose grounds cause intermittent behavior).
If needed, an installer can adjust bulb monitoring (cold/hot checks) for relevant channels.

DRL flicker / unstable DRL switching

Verify stable voltage (battery/charging health matters).
Some cars use PWM for DRL control; coding or an anti-flicker solution may help depending on setup.
Repeat the flash sequence with consistent timing.

Hyper-flash / indicator rate changes

If the indicator rate changes after installation, the car is usually detecting an unexpected electrical load. Start with connector checks, then review coding/monitoring settings. A general workflow is outlined here: CANBUS & hyper-flash fixes.

8) FAQs — ELERON BMW F3x / F8x headlights

Which version do I order: 6-pin, 8-pin, 9-pin, or 10-pin?

Count the populated pins on your factory headlight plug. VO/SA codes help — 522 alone is typically 8-pin, 522+524 (AHL) is 9-pin, pre-LCI Adaptive LED (552) is 10-pin, and LCI LED cars (5A2 and 552 alike) are 6-pin — but always confirm by pin count because connector housings can share the same shell. You can also match your headlight’s OEM part number in the cross-reference table above.

How do I switch DRL colors?

Use the high-beam stalk flash sequence. ICON/CSL-GTS variants differ by DRL configuration: white-only (no change), white+yellow (5× toggles between the two), white+yellow+amber (4×/5×/6×), white+yellow+red (4×/5×/6×). Snake-Eye is 4× for white and 5× for yellow.

Do I need coding?

Many installs are straightforward once the correct pin version is chosen, but some configurations (especially adaptive systems or unusual wiring) may require coding. Conversions from xenon to full LED can have different coding needs depending on equipment.

What’s the fastest way to get a clean beam pattern?

Aim the headlights after installation on level ground using a wall reference, then fine-tune on road. Follow our step-by-step guide: headlight aiming.

My factory angel eyes or DRL failed on one side — repair, OEM replacement, or upgrade?

Depends on the housing’s condition. If the unit is dry and clear, a specialist board-level LED repair is a legitimate budget path — though color match and lifespan vary. If moisture is already inside, part swaps are temporary: the humidity that killed the first module claims the next one. BMW doesn’t sell the rings separately, so official repair means complete assemblies at dealer prices — commonly north of €1,500 per side. At that point, new complete units with a warranty are usually the more rational spend.

Will these be brighter than my factory xenon or halogen at night?

Coming from aged xenon, yes — noticeably: xenon burners lose output gradually over the years, and a fresh bi-LED projector restores a wide, long, white beam with a sharp cutoff and instant full brightness, no warm-up. The difference is biggest exactly where it matters: unlit roads and dark winter commutes. One condition applies to everyone — aim the beam correctly after install, or the sharp cutoff works against you. See the aiming guide above.

I have factory LED headlights and only want the yellow CSL DRL — do I need new headlights?

No. For factory Icon Adaptive LED headlights, our switchable white/yellow F32/F33/F36 CSL DRL modules replace only the DRL board — the factory headlights and all their functions stay in the car, with no coding. The complete headlights on this page are for cars coming from halogen/xenon, failed factory units, or anyone who wants the ICON or Snake-Eye design itself.

Need help confirming your connector?

Send a clear photo of your vehicle-side headlight plug (showing populated pins) and your build info — we’ll point you to the correct version. For deeper reading, use the guides below.

E-mark Guide Headlight Aiming CANBUS & Errors

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)

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