Hid headlamp bulbs failed within weeks of each other and with less than one year of service on the vehicle. It took almost three weeks to get a replacement bulb after the first failure. During that time the second bulb failed while I was driving at night. After the bulbs were replaced I realized that the hid headlight "shutters" in the headlight assembly system intermittently failed to properly shift back to low beam from high beam. This problem occurs on the drivers and passenger side. This can result in blinding oncoming traffic and to avoid the problem I can only drive with low beams. Toyota advised that both headlight assemblies are defective and must be replaced. Toyota has not acknowledged that other 2006 Prius owners are having problems with their headlights although many customers have posted similar complaints on the internet.

- Peoria, AZ, USA