Ford C-Max Fog Lights: Specs, Fitment & Common Faults
Whether the dashboard fog light icon illuminates when pressed narrows the fault down considerably before you start.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: 4550597 (as quoted in catalogue listings — confirm via VIN) — aftermarket Valeo 088358 / TYC 19-6147-01-9
| Fog light, passenger side (LH / nearside) — aftermarket | Valeo 088358 (H11, with bulb, fits either side); Van Wezel 4327999V (H11, with bulb and holder, fits either side); TYC 19-6148-01-9 (H8, with cornering light, Vignale / ST-Line trims); Abakus 431-2038L-UQ (H8, without bulb or holder); Alkar 2911401 (H8, without holder); Diederichs 1419089 (H8, with bulb, for cars with dynamic bending light) |
|---|---|
| Fog light, driver's side (RH / offside) — aftermarket | TYC 19-6147-01-9 (H8, with cornering light, Vignale / ST-Line trims); Abakus 431-2038R-UQ (H8, without bulb or holder); Alkar 2912401 (H8, without holder); Diederichs 1419088 (H8, with bulb, for cars with dynamic bending light); Fast FT85876 (H8, without bulb) |
| Bulb types | H11 (PGJ19-2); H8 (PGJ19-1); H1 (P14.5s) |
| Genuine (OE) numbers quoted | Ford 4550597 (OE part, H11, front, fits either side, with bulb holder) |
| Fitment notes | Cornering-light versions exist for Vignale and ST-Line trims (TYC 19-6147-01-9 / 19-6148-01-9); Diederichs 1419088 / 1419089 suit cars with dynamic bending light; both H8 and H11 lamps are listed. |
A Genuine Diagnostic Shortcut: What the Dashboard Tells You — Ford C-Max Fog Lights
A genuinely useful diagnostic starting point on the C-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 C-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 C-Max Fog Lights: Rarely Used, Easy to Forget About Until Needed
Most Ford C-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 C-Max Fog Lights: Watch: Replacing It
also https://www.youtube.com/watch?v=BKlE2krl_Ik (2012-2018 C-Max bumper fog insert)
Ford C-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 C-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 C-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 C-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 C-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.
Opens live listings in a new tab.
Ford C-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.