Front turn signal, parking and side marker exterior light bulbs are sometimes referred to as light bulbs in the headlight housing. For the models with turn signal lights beneath the side view mirrors, carefully remove the mirror cover, disconnect the electrical connection and also unclip the plastic light assembly wherein the turn signal light assembly has to be replaced in its entirety. To cancel the front turn signal/parking and side marker light bulb, the headlight housing has to be removed then the bulb holder which must be turned counterclockwise and pulled out. To replace the bulb the following procedure is followed: to insert the thin end of the bulb into the holder, twist it anti-clockwise and then pull it out, whereas to put the bulb replace the above procedure in reverse. To replace fog lamp bulbs lift the front of the vehicle on jackstands, disconnect this connector and turning the bulb holder anti-clockwise. Note that for the 2010 and other subsequent model years, halogen bulbs can overheat from skin oil. This center high-mounted brake light bulb on 2009 and models earlier is reached by opening the rear hatch, then the trim piece and then disconnect the electrical connector and finally, you twist the bulb holder in a clockwise direction. For 2009 and later models, the assembly is replaced as a unit, if required for service or repair work. For replacing turn signal, brake, rear brake/tail and back-up lighting bulbs in the same models 2008 and earlier-the rear hatch must be opened and the access panel removed to reach the bulbs. For the models of 2008-2013 Highlander and 2010-2013 the bulbs can be accessed after the fasteners of the rear interior trim panels are removed. To get to the taillight housing one has to disconnect the electrical connector, then the nuts inside the vehicle, followed by the rear bumper cover and exterior retaining screw. For 2014 and later models, turn the lift gate handle to open it, undo the retaining screws and pull of the taillight housing with a note that for Lexus models one has to pry out the trim panel covering the screws. License plate light bulbs are replaced by unscrewing the housing and removing the bulb by pulling it straight by its base. A few of the interior lights, such as the map reading and dome lights are done by first accessing the lens, then pulling the bulb straight out of the terminal clips, and installation is done in a similar manner as the removal process.
