general problems of the 2010 Toyota Avalon

I have a 2008 Toyota Avalon touring model. Since late June of 2010 through October of 2010 the car has been driven on 3 consecutive long trips. The first trip was approximately 3600 miles, the second trip was approximately 1200 miles and the last trip was 1800 miles. All of these trips the head lamp system was set on auto. The bright lights were used on occasion when on dark roads or during the day to signal to trucks or other drivers that it was safe to pull in on a passing situation. On the last trip, during the night the brights worked perfectly. On a day trip in a caravan, I had to signal the vehicles ahead of me to slow down as the vehicles behind me were stopped. I did this by repeatedly flashing the high beams. That night both high beams did not work even though the blue indicator on the dash says they are on. I took it to the dealer to see if it was a relay or other item as I wouldn't expect both high beams to burn out at the same time. The dealer said they were both burnt out and wanted close to $225 to change them out. I elected to do the work myself and have ordered the parts from my auto parts store. Before the bulbs came in the main lights have started acting up. The right side main beam went out temporarily 2 nights ago. I reset the system and it started working. Last night I pulled into my driveway and waited for my passenger to join me. The lights remained on. I pulled out and started forward to hear a click and both front beams went out. The green light for the headlamp system was still on. I reset the system and they now work. I have now picked up the bright beam bulbs and will install them tonight. I will report any more failures on this site immediately.