Hazard Flashing Warning Light Unit problems of the 2006 Toyota Prius

We own a 2006 Toyota pruis. The headlights turn off. We had the same issue repaired about 2 yrs ago when the car was relatively new. Now it's back. Looking on the web, there is significant anecdotal evidence that there is a significant design flaw with the lights. There are literal thousands of pointing on this particular issue. It is not a major financial problem for us as the first was fixed under warranty and we bought the extend warranty that cover this also, but it is a safety hazard as the lights will eventually totally go out when driving. To restore them, you have to rotate the light switch from on to off and back on. My guess is they have a problem with the circuit card, but aren't doing anything to deal with it. It would be interesting to know if Toyota changed the circuit card design.

The headlights intermittently shut off while driving. Sometimes it's the right one and sometimes it's the left one. I'm afraid that sometime it will be both. This is a safety hazard to have the headlights go out. I have had it checked out but since it is an inconsistent problem, it is not always not working when I take the car in so they have a hard time diagnosing it and refuse to change out the headlight system. They almost look at me in disbelief as if they've never heard of such a thing. Yet, I see many other Prius' driving around with one headlight on so I know I am not the only one in there complaining about this problem. They need to look into it and do the right thing to fix the problem before a life is lost and they have to do something to fix this problem.