Before you begin
Did the low-beams in your 2009 to 2015 Toyota Prius go out? Follow this step-by-step guide for instructions on how to replace headlights on your own. No tools are necessary but you'll need new halogen bulbs (H11) and a pair of gloves to avoid touching the bulbs. If one headlight bulb burns out, the other is likely to fail soon as well. Since you’re already under the hood, it’s a good idea to replace both bulbs at the same time. Before you begin the repair, make sure to identify which are low-beams and which are the high-beams (I know from experience that I have accidentally replaced the wrong headlight). Also, make sure to turn the car off and ensure that the lights are off as well.