If you need to change a burnt out vanity mirror light bulb in the sun visor of your third generation (2014, 2015, 2016, 2017 & 2018) Toyota Highlander SUV (or upgrade them both to brighter LED bulbs), check out my DIY tutorial for the procedure by clicking on the text link or thumbnail image below.
2014-2018 Toyota Highlander Vanity Mirror Light Bulbs Replacement Guide