Used Mercedes-Benz GLS Indicator Light

This is the key question to check carefully, because the GLS moved from the first generation (X166, 2016–2019) to the all-new second generation (X167, 2019 onwards), and the front-end design changed significantly between those two generations. A 2017 GLS is X166 and a 2020 GLS is X167, so the indicator lights are not interchangeable. Make sure any breaker you contact confirms the exact generation against your registration before purchasing.

Both a 2016 and a 2018 GLS are first-generation X166 models, so you are within the same generation and the front-end panels are shared across that range. There was no significant facelift to the front lighting on the X166 GLS during this period that would create a hard cut-off, but always confirm the exact part number with the breaker against your registration to be certain.

Trim level does not affect indicator light fitment on the GLS — the front-end panels are shared across trim grades within a generation, including AMG Line variants. You may notice cosmetic differences in surrounding trim pieces such as the grille or bumper styling, but the indicator light itself is determined by generation and facelift period, not trim. Any breaker supplying a GLS indicator light for the correct generation should be suitable regardless of the trim your car carries.

No — the GLS is a full-size SUV offered in a single body style within each generation, and wheelbase or roof height differences do not affect the front-end indicator light. Front-end panels including lights are shared across the range within a generation, so the key detail to get right is simply which generation your vehicle belongs to.

Both a 2021 and a 2023 GLS are second-generation X167 models, so you are looking within the same generation, which is a good starting point for compatibility. The X167 generation received a facelift in 2023, which updated the front-end styling including the lights, so whether a pre-facelift 2021 unit fits a 2023 car that may be post-facelift is something you should confirm directly with the breaker against your exact registration. Always check the part number matches before committing to a purchase.

Engine choice has no bearing on indicator light fitment for the GLS — whether your car is a diesel, petrol, or hybrid variant, the front-end indicator lights are the same within a generation. The only factors that matter are the generation (X166 or X167) and where your car falls relative to any facelift boundary within that generation. Give the breaker your registration and they can confirm the correct part straight away.