Hazard Flashing Warning Light Unit problems of the 2008 Toyota Avalon

2008 Toyota Avalon limited: at 35 months and 40,000 miles, the high intensity headlights (hid) began intermittent operation and pointed straight down to the ground making night driving unsafe. The dealer claimed the low beam hid headlamp was going out and the replacement cost for the hid low beam bulb was an exorbitant $300 dollars ($125 for the bulb and $175 for installation). The bulb replacement did not fix the aim problem and a new headlamp assembly was ordered and installed. The headlamps still point at the ground making the vehicle unsafe to drive at night. I can not believe the federal government would allow Toyota to create such a safety hazard as a light bulb that works intermittently or costs $300 to replace, which is hardly affordable by a majority of americans. The fact that the dealer can not get the lamps to aim correctly on the street indicates the design is also flawed. This is not a luxury item like electric windows or air conditioning. This is a safety device, required by law, and the car is unsafe to drive at night when it malfunctions. The problem is that the hid malfunction occurs prematurely when compared to other headlamps and is extremely expensive to repair. There are numerous complaints about this issue on the internet but Toyota is evidently denying any issue exists.