The newer versions of the Toyota Sienna come with HID headlights. These powerful lights can be recognized by the bluish tint. If a headlight goes out, it needs to be replaced immediately, to avoid an accident or ticket. However, if you have replaced the bulb and the light still doesn’t work, then you most likely need to replace the ballast. On HID lights, a ballast works as the middle-man between the car’s electrical system and the headlight assembly — and over time this can burn-out as well.
Tools Used: Tools, Replacement ballast, Wrench
Remove a Ballast From a Headlamp
Park the Sienna with the emergency brake on. Turn the engine off and let it cool. HID headlights burn very hot, so make sure you let it sit for at least ten minutes, before working on it.