Toyota Corolla Fog Lights: Specs, Fitment & Common Faults

A genuinely useful, systematic diagnostic technique: listening for the relay click narrows down whether a fault lies before or after it — plus why the fuse box itself can fail internally.

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A Genuinely Useful, Systematic Diagnostic Technique Worth Knowing

If both fog lights have stopped working together with good bulbs confirmed, this is genuinely worth trying: with the fog light switch activated, listen carefully at the relay (commonly located in the engine bay fuse box) for an audible click. If you hear no click at all, the fault genuinely lies somewhere before the relay — the switch itself, the wiring leading to it, or the fuse box supplying it. If you do hear the relay click but the lights still don't illuminate, the fault lies further downstream — the wiring between the relay and the lights, the bulb sockets, or a broken ground connection. This simple listening test alone considerably narrows down where to focus your search before opening anything up.

It's also worth knowing that both front fog lights commonly share a single fuse and relay, so if only one side has failed while the other works perfectly, this points away from the shared fuse or relay and toward something specific to that one side — most likely a cut, pulled, or corroded connection at the affected light itself.

Toyota Corolla Fog Lights: Rarely Used, Easy to Forget About Until Needed

Given how rarely most Toyota Corolla 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.

Toyota Corolla Fog Lights: OEM Part Number

Not every Corolla trim comes with fog lights as standard — some use a blanking cover in the same location instead. If you're retrofitting fog lights to a car that didn't come with them, you'll need the wiring harness and switch alongside the lamp assembly itself, not just the lamp.

Toyota Corolla 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 Corolla 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

Toyota Corolla Fog Lights: Generations & Fog Light Type

Not every trim level of the Corolla 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 Toyota Corolla 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.

Toyota Corolla 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.

Read our full Toyota Corolla review

More Toyota Fog Lights

The same part, covered across other Toyota models.

• Toyota Auris Fog Lights
• Toyota Avensis Fog Lights
• Toyota Aygo Fog Lights
• Toyota C-HR Fog Lights
• Toyota GT86 Fog Lights
• Toyota Prius Fog Lights
• Toyota RAV4 Fog Lights
• Toyota Verso Fog Lights
• Toyota Yaris Fog Lights