Ring Toyota for warranty, it will be covered. Normal life span of a HID bulb is around the 3-4000 hours. Changing is simple, its just unclip the base connector, remove the retaining spring and pull it out. Easy as. Just have a look, its self explanatory. Replacement, if you want whiter bulbs, i recommend the Garax D4S 6000k (pure white with a tiny tinge of blue) from Mtecpower on ebay, US seller, around 120-130/pair. Genuine Garax bulbs at great price. OEM Philips will be 2-3 times the price of the imports if you buy them here. First off, call toyota.