Dealer Package: Customer Support Program ZHB Expired October 31, 2019. Toyota has received a number of reports regarding the halogen head lamps on certain 2010 ? 2011 model year Prius vehicles. In these reports, customers have indicated that their vehicle?s halogen low beam headlamp bulb lifetime is shorter than expected. Although the Halogen Low Beam Headlamp Bulbs are covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is providing coverage related to the halogen head lamp bulbs due to these circumstances.