Citroen C4 Picasso Headlights: Specs, Fitment & Common Faults

Bulb type, unit part numbers, and the faults that actually cause that flickering or dim light you've noticed.

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OEM Part Number: confirm via VIN — aftermarket LH Valeo 450558 / RH TYC 20-12943-15-2

Accuracy note: Covers the Citroen C4 Picasso (2013-2018) as listed in the UK aftermarket catalogues. Headlights are sold by side (passenger / nearside = LH, driver's / offside = RH on a UK car) and by lamp type — halogen, xenon (D1S / D3S) and LED or full-LED units are not interchangeable, and DRL, cornering and levelling options change the part number again. The references below are UK aftermarket catalogue listings for this generation, labelled by brand; genuine numbers are shown only where a listing quotes one. Check the lamp type and traffic side (UK right-hand-traffic units, not LHD) against your VIN, and expect xenon / LED and adaptive units to need levelling adjustment or coding after fitting.

Passenger side (LH / nearside) headlight — aftermarket	Valeo 450558 (halogen H7 with LED DRL and indicator functions, electric levelling); Van Wezel 0979961M (halogen H7/H7, OES, electric levelling); Van Wezel 0980985M (xenon D5S with H7, OES, automatic levelling, no ballast); Magneti Marelli 712471901129 (halogen H7/H7, original quality, bulbs included); TYC 20-12944-05-2 (halogen H7 with DRL and position light, electric levelling); Alkar 2751855 (halogen H7/H7, electric levelling motor)
Driver's side (RH / offside) headlight — aftermarket	Van Wezel 0979962M (halogen H7/H7, OES, electric levelling); Van Wezel 0980986M (xenon D5S with H7, OES, automatic levelling, no ballast); Magneti Marelli 712471801129 (halogen H7/H7, original quality, bulbs included); TYC 20-12943-15-2 (halogen H7 with DRL and no position light, electric levelling); Alkar 2752855 (halogen H7/H7, electric levelling motor); Abakus 552-1135RMLD-EM (halogen H7/H1, electric levelling, sold without bulb)
Bulb types	halogen dipped and main beam H7/H7 or H7/H1, indicator PY21W, sidelight W5W or H6W, position light P21/5W; xenon D5S
Genuine (OE) numbers quoted	None quoted in catalogue listings — order genuine units against your VIN
Fitment notes	Halogen and xenon versions exist; xenon cars have D5S bulbs, automatic levelling and a dynamic bending light, and need the matching ballast and control unit that the lamp is sold without.

A Genuinely Important UK Rule Worth Knowing Before You Buy — Citroen C4 Picasso Headlights

If your C4 Picasso has factory-fitted halogen headlamp housings, converting them to fit LED bulbs is treated as a definite MOT failure under the current inspection manual — this isn't a grey area or a minor advisory, since a housing designed for halogen doesn't distribute an LED bulb's light output correctly, which can genuinely dazzle oncoming drivers. If you want a genuine LED upgrade, the correct route is a complete headlight unit designed for LED from the factory, not a bulb swap into an existing halogen housing.

Before you buy: matrix LED, adaptive, and cornering headlight systems often require electronic coding to the car after a unit swap, even for a genuine like-for-like replacement — a headlight that isn't recognised by the car's electronics can trigger warning lights or fail to auto-level correctly. Check whether your specific trim has one of these systems before assuming a straightforward bulb-in, bulb-out job.

Citroen C4 Picasso Headlights: Watch: Replacing It

🎬 Watch: How To Replace Dipped Beam Headlight Bulb Citroen C4 Picasso 4K

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Generation not confirmed from title; also Dn9d0_Az8DM (Short, 2017 Grand C4 Picasso headlamp)

Citroen C4 Picasso Headlights reference plate

Citroen C4 Picasso Headlights: What It Does

Inside the Citroen C4 Picasso's headlight unit sit the main and dipped beam bulbs, or LED/matrix modules on higher trims, precisely angled to light the road ahead without dazzling oncoming drivers. Many current units also fold the daytime running light and front indicator into the same housing, which complicates both the part number and any repair.

Citroen C4 Picasso Headlights: Generations & Headlight Type

Standard trims	Halogen as standard, with LED daytime running lights and full LED options available on higher trims and more recent model years

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Citroen C4 Picasso Headlights: Common Faults, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Headlights Guide for the four bulb technologies and how they differ, UK law on aim and modifications, common faults to check for, how difficult this job is to DIY, and confirming fitment against your VIN.

More Citroen Headlights

The same part, covered across other Citroen models.