Fiat 500L Tail Lights: Specs, Fitment & Common Faults

On the 500L, tail light condensation genuinely typically appears after rapid cooling from rain or a car wash, and should clear on its own.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — tail light (aftermarket) Van Wezel 1609921 / TYC 11-12364-26-2

Accuracy note: Covers the Fiat 500L (2012-) as listed in the UK aftermarket catalogues. Tail lights are handed (left and right are different parts) and the right one depends on whether your car has bulb or LED units, whether the cluster comes with its bulb holder, the body style and the facelift date. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with the fitment details the catalogue gives, and shown for the left-hand light with its right-hand pair where the catalogue names one. Carmakers rarely publish the genuine number against these, so order a genuine light against your VIN if you want a guaranteed match; if the unit on your car has a separate inner light on the tailgate, that is sold as its own part.

Tail lights (aftermarket)	Van Wezel 1609921 (left, LED, without bulb holder, right-hand pair 1609922); Van Wezel 1609923 (left, without bulb holder, right-hand pair 1609924); TYC 11-12364-26-2 (left, LED, without bulb holder); Diederichs 3405695 (left, LED, with bulb holder, right-hand pair 3405694)
Genuine (OE) numbers quoted	None quoted in the catalogue listings — the genuine light varies by trim, bulb or LED type and facelift date, so order it against your VIN
Fitment notes	Left and right are separate parts; check LED or bulb type, whether the bulb holder is included, body style and facelift date before ordering.

A Genuinely Useful, Official-Sourced Explanation Worth Knowing — Fiat 500L Tail Lights

This is genuinely worth knowing if you're seeing condensation in a tail light and wondering if it's normal: light housings generally aren't fully sealed by design — they have small vents allowing air to expand and contract as the lamp heats and cools, which draws in outside air and can cause condensation when temperatures drop. Genuine condensation from this normal process typically appears after the lamp is rapidly cooled by rain or a car wash, or after a warm, humid day is followed by a cool, clear night, and should clear on its own as conditions change.

A genuinely important distinction worth knowing if condensation doesn't clear or keeps recurring: if water genuinely persists rather than clearing within a day or two, or if you notice actual standing water rather than light misting, this points toward a genuine seal or gasket fault rather than the normal, temporary condensation process — worth having this properly inspected rather than assuming it will always resolve itself.

It's also worth knowing that unaddressed water ingress can, in documented cases, progress beyond simple dampness to affect nearby electrics and wiring — worth having any persistent water ingress investigated and dried out thoroughly and promptly rather than leaving it.

Fiat 500L Tail Lights: More Wiring Behind There Than Most People Assume

Because brake light, indicator, reversing light and rear fog light are usually combined in one Fiat 500L tail light housing, a single electrical fault can knock out more than one function at once — which is why this particular complaint rarely means just one thing.

Fiat 500L Tail Lights: Watch: Replacing It

🎬 Watch: How to Replace the Tail Light Assembly on a FIAT 500 Tail Light / Brake Light / Turn Signal

Watch on YouTube ↗

This video shows a closely related car on the same platform, so the light fittings and clips can differ slightly on yours.

Before you buy: tail light design and bulb type vary by trim and facelift status. Always confirm against your VIN before ordering.

Fiat 500L Tail Lights: What It Does

Beyond basic rear visibility, tail light units on the 500L typically integrate brake lights, indicators, reversing lights and rear fog lights into a single housing. Higher trims may use LED units with a distinct light signature, which are not interchangeable with standard halogen units even if the physical mounting looks similar.

Fitment & Compatibility

Fiat 500L Tail Lights: Generations & Tail Light Type

Standard trims	Halogen bulb-based units as standard
Higher trims, later model years	LED tail lights become available further up the range, genuinely a different assembly and connector from the halogen units on lower trims

Tail light design changed between generations of the 500L, and facelifted versions within the same generation often use a revised light signature that isn't interchangeable with pre-facelift units. Always confirm the exact part for your specific model year before ordering. Whether you're sourcing a replacement tail lights for your Fiat 500L from a dealer, specialist, or online marketplace, always check compatibility against your registration or VIN before buying, and confirm you're ordering the correct side — driver's side (RH in the UK) or passenger side (LH in the UK) — since these are not interchangeable.

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Fiat 500L Tail Lights: Common Faults, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Tail Lights Guide for diagnosing which circuit has failed, how easy this job is to DIY, and aftermarket advice.

More Fiat Tail Lights

The same part, covered across other Fiat models.