Fiat 500L Fog Lights: Specs, Fitment & Common Faults
On the 500L, a rear fog light on a related model was genuinely configured as the wrong side in software until switched — oddly affecting window direction too.
Illustration for editorial purposes
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Fiat 500L Fog Lights: OEM Part Number
A Genuinely Bizarre, Real Software Mismatch Worth Knowing About — Fiat 500L Fog Lights
This is genuinely worth knowing if a rear fog light won't work despite the bulb, wiring, and fuse all testing fine: one documented case on a related model found the rear fog light had been configured in the car's diagnostic software as "right hand," despite being physically fitted on the right side — switching this setting to "left hand" made the light work correctly. Oddly, this same setting was also found to affect which direction the power windows operated in reverse.
It's also genuinely worth knowing about a real, documented fault worth ruling out: one case saw testing at the bulb holder reveal virtually no voltage, eventually traced to a fault with the Body Control Module itself rather than anything simpler.
Fiat 500L Fog Lights: Rarely Used, Easy to Forget About Until Needed
Given how rarely most Fiat 500L owners actually switch these on, a fault can develop and go completely unnoticed for a long time — until a genuinely foggy morning arrives and the problem picks the worst possible moment to show itself.
Fiat 500L Fog Lights: What It Does
Front fog lights are angled and positioned to illuminate the road surface in low visibility conditions without creating the glare a standard headlight beam would in fog. Some higher trims of the 500L integrate fog lights into the same housing as cornering lights or daytime running lights, which affects both the part number and the complexity of any repair.
Fitment & Compatibility
Fiat 500L Fog Lights: Generations & Fog Light Type
| Standard trims | Halogen fog light bulb as standard |
|---|---|
| Higher trims, later model years | LED fog lights become available further up the range, genuinely a different assembly and connector from the halogen units on lower trims |
Not every trim level of the 500L comes with fog lights fitted as standard, and the housing design often differs between trims that have them integrated with other lighting functions and those with a standalone unit. Always confirm your specific trim's fitment before ordering. Whether you're sourcing a replacement fog 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 Fog Lights: Common Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Fog Lights Guide for common faults to check for (including exactly what fails an MOT), how easy this job is to DIY, and aftermarket advice.
More Fiat Fog Lights
The same part, covered across other Fiat models.