I just purchased a 2007 Prius and not only did I have to have the headlights relaced the back light over the plate as well as the driving rear light bulb is out and the vanity light??? What gives Does anyone know what makes these burn out?? Ughhh!!
No answer here, but confirmation about the tail lights. They seem to burn out much more often than on other cars.
I have 5 prii. First thing I did was oil change, ATF change, change all the bulbs, upgraded most bulbs to LED. Car is an investment. Bulbs burn out. Headlights (HID) is very common. LOTS of posts on how to DIY.
My 2004 has logged 110K miles and I have not replaced any light bulbs (or HID headlights.) You might measure voltage on the 12V bus when the car is READY, which should be ~13.8V. If the voltage is not much higher than that, I would guess that your car received a bad batch of bulbs.