Even if you've never driven your Toyota Highlander off-road, its headlights may still break or burn out from time to time. After you've figured out whether the low or high-beam bulb has burned out, you can order a replacement bulb and install it yourself in just a few minutes.
Remove the keys from the ignition and engage the emergency brake for safety. Also, make sure the headlamp control is in the "OFF" position.
Open the hood and locate the back of the headlight assembly inside the engine compartment.
Unplug the electrical connector from the assembly and remove the rubber cover from the bulb socket.
Release the retaining spring to loosen the old bulb, and then pull it directly out of the socket. Carefully dispose of the bulb to prevent it from cracking or shattering.
Align the tabs of the new bulb with the cutouts of the mounting hole. Then, carefully press the bulb into the socket until it's secure.
Install the rubber cover in its original position and reattach the electrical connector to the headlight assembly. Make sure the rubber cover is fastened to the socket before continuing.
Start your Highlander's engine and test the headlights to make sure they work before closing the hood.