Mercedes-Benz A-Class Tail Lights: Specs, Fitment & Common Faults
A genuinely important finding: LED tail lights genuinely don't produce as much heat as older halogen or xenon units, meaning condensation can linger for much longer — plus an alarming, honest finding that Mercedes-Benz's own used car warranty has been documented not covering tail lights.
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OEM Part Number: confirm via VIN — tail light (aftermarket) Magneti Marelli 715104221000 / ULO 1111101
| Tail lights (aftermarket) | Magneti Marelli 715104221000 (left, with bulb holder, right-hand pair 715104220000); ULO 1111101 (left, with bulb holder, to 2015); ULO 1111003 (left, LED, with bulb holder); Abakus 440-1990L-AEN (left, LED) |
|---|---|
| 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. |
Mercedes-Benz A-Class Tail Lights: More Wiring Behind There Than Most People Assume
The Mercedes-Benz A-Class's tail lights pack brake, indicator, reversing and rear fog functions into a single unit, so a fault in the wiring or housing can affect several of them simultaneously — meaning "the tail light's broken" could describe quite different underlying problems.
Mercedes-Benz A-Class Tail Lights: What It Does
Beyond basic rear visibility, tail light units on the A-Class 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.
Mercedes-Benz A-Class Tail Lights: Watch: Replacing It
Fitment & Compatibility
Mercedes-Benz A-Class Tail Lights: Generations, Derivatives & Tail Light Type
| Standard trims | LED tail lights are standard on current generations, with halogen fitted to older models |
|---|---|
| AMG Line/facelift models | A revised LED light signature is often introduced at facelift, genuinely not interchangeable with the pre-facelift design despite the same model name continuing |
Tail light design changed between generations of the A-Class, 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 Mercedes-Benz A-Class 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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A Genuinely Important, Distinctive Finding Worth Knowing — Mercedes-Benz A-Class Tail Lights
If condensation inside a tail light is lingering for longer than you'd expect, this is genuinely worth knowing: LED tail lights genuinely don't produce anywhere near as much heat as older halogen or xenon units did, meaning condensation that would have quickly burned off on an older car can genuinely linger for much longer on a modern LED-equipped one, sometimes remaining even after a long motorway drive. Worth knowing this is a documented characteristic of LED lighting generally, rather than necessarily a sign of a genuine fault, provided the condensation is light misting rather than actual water droplets or standing water.
It's also genuinely worth knowing an alarming, honest finding worth checking on a used car specifically: Mercedes-Benz's own used car warranty has been documented explicitly not covering tail lights in at least one case, worth checking the exact terms of any used car warranty rather than assuming this specific component is automatically covered if a fault develops.
Mercedes-Benz A-Class 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 Mercedes-Benz Tail Lights
The same part, covered across other Mercedes-Benz models.