Mercedes-Benz GLC Tail Lights: Specs, Fitment & Common Faults
On the GLC, 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 finding about used car warranty exclusions.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: confirm via VIN — tail light (aftermarket) Alkar 2001713 / Van Wezel 3074923U
| Tail lights (aftermarket) | Van Wezel 3074923U (left, with bulb holder, inner section, right-hand pair 3074924U); Van Wezel 3074927U (left, LED, with bulb holder, inner section, right-hand pair 3074928U); Alkar 2001713 (left, LED, with bulb holder, outer section, right-hand pair 2002713); ULO 1190021 (left, LED, with bulb holder, from 2015 to 2019, inner section, right-hand pair 1190022) |
|---|---|
| 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 GLC Tail Lights: More Wiring Behind There Than Most People Assume
The Mercedes-Benz GLC'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 GLC Tail Lights: What It Does
Beyond basic rear visibility, tail light units on the GLC 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 GLC Tail Lights: Watch: Replacing It
Fitment & Compatibility
Mercedes-Benz GLC 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 GLC, 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 GLC 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.
A Genuinely Important, Distinctive Finding Worth Knowing — Mercedes-Benz GLC 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 on related models, meaning condensation that would have quickly burned off on an older car can genuinely linger for much longer, sometimes even after a long drive.
It's also genuinely worth knowing an alarming, honest finding worth checking on a used car: 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 rather than assuming this component is automatically covered.
Mercedes-Benz GLC 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.