If you need to change a burnt out high mount 3rd brake light bulb located in the housing on the rear deck and near the trunk lid of your sixth generation (2017, 2018, 2019 & 2020) Hyundai Elantra sedan, take a look at my DIY tutorial for the procedure (with the compatible replacement part number) by clicking on the text link or thumbnail image below.
2017-2020 Hyundai Elantra 3rd Brake Light Bulb Replacement Guide
