Ford S-Max Fog Lights: Specs, Fitment & Common Faults
Whether the dashboard fog light icon illuminates when pressed tells you exactly where to look before touching a fuse.
Illustration for editorial purposes
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OEM Part Number: 4550597 (as quoted in catalogue listings — confirm via VIN) — aftermarket Valeo 043352 / Hella 1N0 010 304-021
| Fog light, passenger side (LH / nearside) — aftermarket | Valeo 043352 (H11, Fogstar, white lens, bulb included, fits either side); Hella 1N0 010 304-011 (H8 and W5W position light, bulbs included, ECE approved); Johns 32 25 29-2 (LED, bulb holder included); Van Wezel 1887995 (H8, socket PGJ19-1); Diederichs 1485089 (H8, Depo/TYC); TYC 19-0774-01-2 (H8 and W5W) |
|---|---|
| Fog light, driver's side (RH / offside) — aftermarket | Hella 1N0 010 304-021 (H8 and W5W position light, bulbs included); Hella 1N0 010 304-041 (H8, bulb included, without daytime running light); Johns 32 25 30-2 (LED, bulb holder included); Van Wezel 1887996 (H8, socket PGJ19-1); Diederichs 1485088 (H8, Depo/TYC); Ford 4550597 (H11, bulb holder included, genuine Ford part, fits either side) |
| Bulb types | H8 with W5W position light (PGJ19-1); H11 (PGJ19-2); LED units |
| Genuine (OE) numbers quoted | Ford 4550597 (front fog lamp, either side, marked as an original-equipment part) |
| Fitment notes | no cornering version is listed. |
A Genuine Diagnostic Shortcut Worth Trying — Ford S-Max Fog Lights
A genuinely useful diagnostic starting point on the S-Max: pressing the fog light switch and watching whether the dashboard indicator icon illuminates tells you a lot about where the fault actually sits. If the icon lights up as expected but the physical lights themselves stay off, this points to a wiring, connector, or bulb problem downstream of the switch — the switch and its electronics are working correctly, so there's no point chasing a switch replacement. If the icon doesn't illuminate at all, the problem is more likely upstream, at the switch itself or the fuse feeding it.
On the S-Max, two other genuinely common, specific causes worth checking: a wiring harness connector near the fog light that's come loose or was never reconnected properly after bumper or bodywork repair (a surprisingly common cause after any front-end repair work), and, less commonly but still worth ruling out, animal damage to the wiring loom on a car that's spent time parked outside — rodents chewing through wiring insulation is a genuine, if less obvious, cause of exactly this kind of intermittent or total fog light failure.
Ford S-Max Fog Lights: Rarely Used, Easy to Forget About Until Needed
Most Ford S-Max owners barely use their fog lights outside a handful of days a year, so a fault can sit unnoticed for a long stretch — until a properly foggy morning exposes it at exactly the wrong moment.
Ford S-Max Fog Lights: Watch: Replacing It
Title does not state generation, so 2015 fit is unconfirmed; the search also returned a similar video, _96ONFNZRUk.
Ford S-Max 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 S-Max 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
Ford S-Max 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 S-Max 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 Ford S-Max 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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Ford S-Max 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 Ford Fog Lights
The same part, covered across other Ford models.