Seat Ateca Tail Lights: Specs, Fitment & Common Faults
On the Ateca, a genuine manufacturing defect (overtightened mounting bolts cracking the housing) explains a well-documented condensation pattern — plus a real DIY drainage fix worth trying.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — tail light (aftermarket) Van Wezel 4907923 / Valeo 047107
| Tail lights (aftermarket) | Van Wezel 4907923 (left, with bulb holder, inner section, right-hand pair 4907924); Van Wezel 4907927V (left, LED, with bulb holder, inner section, right-hand pair 4907928V); Valeo 047107 (left, LED, inner section, right-hand pair 047108); Valeo 047103 (left, with bulb holder, inner section, right-hand pair 047104) |
|---|---|
| Genuine (OE) numbers quoted | None quoted in the catalogue listings — the genuine light varies by trim, bulb or LED type and facelift date, so order it against your VIN |
| Fitment notes | Left and right are separate parts; check LED or bulb type, whether the bulb holder is included, body style and facelift date before ordering. |
Confirmed: A Genuine Manufacturing Defect Behind a Specific Batch of Condensation Complaints — Seat Ateca Tail Lights
This is worth knowing directly, since it's more specific than the general LED condensation explanation: a genuinely confirmed manufacturing fault has affected this platform, where the mounting bolts holding the light unit in place were overtightened at the factory. This caused the plastic housing around the mounting studs to develop hairline cracks — genuinely visible if you remove a mounting stud and look at the thinnest part of the housing near the top — letting moisture in and producing persistent condensation that a simple reseal often can't fully resolve, since the crack itself is the actual problem, not just a failed seal. SEAT has replaced affected units free of charge in multiple documented cases once this was properly identified and escalated, and owners report this specific pattern has been reported as far back as 2004.
Worth knowing about how dealers typically respond: light misting alone is often dismissed as normal, but visible water actually pooling or running down inside the unit is a different matter — taking clear photos and being persistent genuinely increases the chance of a free replacement, particularly if you can point to this being a documented, known issue rather than an isolated fault.
Seat Ateca Tail Lights: More Wiring Behind There Than Most People Assume
The Seat Ateca's tail light unit combines several jobs in one housing — brake, indicator, reversing and rear fog light — so a single fault can knock out more than one function at once, and "the tail light's not working" isn't really one specific problem.
Seat Ateca Tail Lights: Watch: Replacing It
This video shows a closely related car on the same platform, so the light fittings and clips can differ slightly on yours.
Seat Ateca Tail Lights: What It Does
Beyond basic rear visibility, tail light units on the Ateca typically integrate brake lights, indicators, reversing lights and rear fog lights into a single housing. Higher trims may use LED units with a distinct light signature, which are not interchangeable with standard halogen units even if the physical mounting looks similar.
Fitment & Compatibility
Seat Ateca Tail Lights: Generations, Derivatives & Tail Light Type
| Standard trims | Halogen bulb-based units as standard on base trims |
|---|---|
| FR/Cupra, higher trims | Full LED tail lights with a distinct light signature become available, genuinely a different assembly and connector from the halogen units on lower trims |
Tail light design changed between generations of the Ateca, and facelifted versions within the same generation often use a revised light signature that isn't interchangeable with pre-facelift units. Always confirm the exact part for your specific model year before ordering. Whether you're sourcing a replacement tail lights for your Seat Ateca 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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Seat Ateca Tail Lights: Common Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Tail Lights Guide for diagnosing which circuit has failed, how easy this job is to DIY, and aftermarket advice.
More Seat Tail Lights
The same part, covered across other Seat models.